FORM 10-K/A AMENDMENT NO.1 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 (Mark One) [x] Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2002 OR [ ] Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number 0-19585 Southwest Oil & Gas Income Fund X-B, L.P. (Exact name of registrant as specified in its limited partnership agreement) Delaware 75-2332176 (State or other jurisdiction (I.R.S. Employer of incorporation or organization) Identification No.) 407 N. Big Spring, Suite 300, Midland, Texas 79701 (Address of principal executive office) (Zip Code) Registrant's telephone number, including area code (432) 686-9927 Securities registered pursuant to Section 12(b) of the Act: None Securities registered pursuant to Section 12(g) of the Act: limited partnership interests Indicate by check mark whether registrant (1) has filed reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days: Yes No X Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [x] The registrant's outstanding securities consist of Units of limited partnership interests for which there exists no established public market from which to base a calculation of aggregate market value. The total number of pages contained in this report is 50. The exhibit index is found on page 47. Table of Contents Item Page Part I Glossary of Oil and Gas Terms 3 1. Business 5 2. Properties 10 3. Legal Proceedings 11 4. Submission of Matters to a Vote of Security Holders 11 Part II 5. Market for Registrant's Common Equity and Related Stockholder Matters 12 6. Selected Financial Data 13 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 14 8. Financial Statements and Supplementary Data 22 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 37 Part III 10. Directors and Executive Officers of the Registrant 38 11. Executive Compensation 40 12. Security Ownership of Certain Beneficial Owners and Management 40 13. Certain Relationships and Related Transactions 41 14. Controls and Procedures 41 Part IV 15. Exhibits, Financial Statement Schedules, and Reports on Form 8-K 42 Signatures 43 Glossary of Oil and Gas Terms The following are abbreviations and definitions of terms commonly used in the oil and gas industry that are used in this filing. All volumes of natural gas referred to herein are stated at the legal pressure base to the state or area where the reserves exit and at 60 degrees Fahrenheit and in most instances are rounded to the nearest major multiple. Bbl. One stock tank barrel, or 42 United States gallons liquid volume. Developmental well. A well drilled within the proved area of an oil or natural gas reservoir to the depth of a stratigraphic horizon known to be productive. Exploratory well. A well drilled to find and produce oil or gas in an unproved area to find a new reservoir in a field previously found to be productive of oil or natural gas in another reservoir or to extend a known reservoir. Farm-out arrangement. An agreement whereby the owner of a leasehold or working interest agrees to assign his interest in certain specific acreage to an assignee, retaining some interest, such as an overriding royalty interest, subject to the drilling of one (1) or more wells or other specified performance by the assignee. Field. An area consisting of a single reservoir or multiple reservoirs all grouped on or related to the same individual geological structural feature and/or stratigraphic condition. Mcf. One thousand cubic feet. Oil. Crude oil, condensate and natural gas liquids. Overriding royalty interest. Interests that are carved out of a working interest, and their duration is limited by the term of the lease under which they are created. Present value and PV-10 Value. When used with respect to oil and natural gas reserves, the estimated future net revenue to be generated from the production of proved reserves, determined in all material respects in accordance with the rules and regulations of the SEC (generally using prices and costs in effect as of the date indicated) without giving effect to non-property related expenses such as general and administrative expenses, debt service and future income tax expenses or to depreciation, depletion and amortization, discounted using an annual discount rate of 10%. Production costs. Costs incurred to operate and maintain wells and related equipment and facilities, including depreciation and applicable operating costs of support equipment and facilities and other costs of operating and maintaining those wells and related equipment and facilities. Proved Area. The part of a property to which proved reserves have been specifically attributed. Proved developed oil and gas reserves. Reserves that can be expected to be recovered from existing wells with existing equipment and operating methods. Proved properties. Properties with proved reserves. Proved oil and gas reserves. The estimated quantities of crude oil, natural gas, and natural gas liquids with geological and engineering data that demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions, i.e., prices and costs as of the date the estimate is made. Proved undeveloped reserves. Reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion. Reservoir. A porous and permeable underground formation containing a natural accumulation of producible oil or gas that is confined by impermeable rock or water barriers and is individual and separate from other reservoirs. Royalty interest. An interest in an oil and natural gas property entitling the owner to a share of oil or natural gas production free of costs of production. Working interest. The operating interest that gives the owner the right to drill, produce and conduct operating activities on the property and a share of production. Workover. Operations on a producing well to restore or increase production. Part I Item 1. Business General Southwest Oil & Gas Income Fund X-B, L.P. (the "Partnership" or "Registrant") was organized as a Delaware limited partnership on November 27, 1990. The offering of limited partnership interests began December 1, 1990 as part of a shelf offering registered under the name Southwest Oil & Gas 1990-91 Income Program (the "Program"). Minimum capital requirements for the Partnership were met on March 1, 1991, with the offering of limited partnership interests concluding September 30, 1991. The Partnership has no subsidiaries. The Partnership has acquired interests in producing oil and gas properties, and produced and marketed the crude oil and natural gas produced from such properties. In most cases, the Partnership purchased working interests in oil and gas properties. The Partnership purchased either all or part of the rights and obligations under various oil and gas leases. The principal executive offices of the Partnership are located at 407 N. Big Spring, Suite 300, Midland, Texas, 79701. The Managing General Partner of the Partnership, Southwest Royalties, Inc. (the "Managing General Partner") and its staff of 82 individuals, together with certain independent consultants used on an "as needed" basis, perform various services on behalf of the Partnership, including the selection of oil and gas properties and the marketing of production from such properties. H. H. Wommack, III, Chairman, Director, President and Chief Executive Officer of the Managing General Partner, is also a general partner. The Partnership has no employees. Introductory Note During 2002, the Partnership changed its method of providing for depletion from the units-of-revenue method to the units-of-production method as described in Note 3 to the Partnership's financial statements. Subsequent to the issuance of the Annual Report on Form 10-K for the year ended December 31, 2002, the Partnership determined that the above change in accounting method should have been adopted by the Partnership as a cumulative effect of a change in accounting principle. As described in Note 9 to the Partnership's financial statements, the Partnership had previously applied the change in the method of providing for depletion prospectively as of October 1, 2002. Principal Products, Marketing and Distribution The Partnership has acquired and holds working interests in oil and gas properties located in Arkansas, New Mexico and Texas. All activities of the Partnership are confined to the continental United States. All oil and gas produced from these properties is sold to unrelated third parties in the oil and gas business. The revenues generated from the Partnership's oil and gas activities are dependent upon the current market for oil and gas. The prices received by the Partnership for its oil and gas production depend upon numerous factors beyond the Partnership's control, including competition, economic, political and regulatory developments and competitive energy sources, and make it particularly difficult to estimate future prices of oil and natural gas. In 2002, fighting and threats of fighting in the Middle East and a strike in a major oil exporting country dominated the direction of crude oil prices. While OPEC agreed to keep production constant throughout the year, conflicts between the U.S. and Iraq, as well as between Israel and the Palestinians threatened supplies and caused oil prices to surge in 2002. In addition, a strike by oil workers in Venezuela, the fourth largest supplier to the U.S., took a significant amount of crude oil off the market toward the end of the year. As a result, OPEC agreed in January 2003 to increase output by 1.5 million barrels per day in an effort to make up for the lost supply and stabilize prices. In 2002, spot prices for natural gas fell by 27.5% from the unprecedented heights reached in 2001, averaging just under $3.00/MMBtu for the year. Most of the lowest prices were seen early on, with the first quarter averaging of $2.24/MMBtu. But as the year progressed, prices climbed higher, ending with a $3.99 average in December. As for 2003, industry analysts are divided on their gas price predictions, with estimates ranging anywhere from $4.00 to $6.00/MMBtu. Weather forecasts, storage inventory levels, a tighter supply and demand balance, and the unstable situation with Iraq are all factors that will have a significant impact on the direction prices will take. Overall however, analysts are maintaining a bullish perspective, expecting gas prices to remain at or above $4.00/MMBtu in 2003. Following is a table of the ratios of revenues received from oil and gas production for the last three years: Oil Gas ------ ------ 2002 83% 17% 2001 80% 20% 2000 83% 17% As the table indicates, the majority of the Partnership's revenue is from its oil production; therefore, Partnership revenues will be highly dependent upon the future prices and demands for oil. Seasonality of Business Although the demand for natural gas can be effected by seasonality, with higher demand in the colder winter months and in very hot summer months, the Partnership has not experienced material price and volume changes due to seasonality and has been able to sell all of its natural gas, either through contracts in place or on the spot market at the then prevailing spot market price. Customer Dependence No material portion of the Partnership's business is dependent on a single purchaser, or a very few purchasers, where the loss of one would have a material adverse impact on the Partnership. Three purchasers accounted for 77% of the Partnership's total oil and gas production during 2002: Teppco Crude Oil LLC for 44%, Plains Marketing LP for 21% and Exxon Company USA for 12%. Contracts for 2002 with these major purchasers cover month-to- month contracts. Prices received from these major purchasers ranged from a low of $20.19 per Bbl to a high of $22.99 per Bbl. Three purchasers accounted for 71% of the Partnership's total oil and gas production during 2001: Teppco Crude Oil LLC for 40%, Plains Marketing LP for 21% and Raptor Resources Inc. for 10%. Contracts for 2001 with these major purchasers cover month-to-month contracts. Prices received from these major purchasers ranged from a low of $23.19 per Bbl to a high of $26.85 per Bbl and $3.97 per mcf. Three purchasers accounted for 79% of the Partnership's total oil and gas production during 2000: Teppco Crude Oil LLC for 47%, Plains Marketing LP for 20% and Mobil Corporation for 12%. Contracts for 2000 with these major purchasers cover month-to-month contracts. Prices received from these major purchasers ranged from a low of $26.38 per Bbl to a high of $28.50 per Bbl. All purchasers of the Partnership's oil and gas production are unrelated third parties. In the event either of these purchasers were to discontinue purchasing the Partnership's production, the Managing General Partner believes that a substitute purchaser or purchasers could be located without undue delay. No other purchaser accounted for an amount equal to or greater than 10% of the Partnership's sales of oil and gas production. Competition Because the Partnership has utilized all of its funds available for the acquisition of interests in producing oil and gas properties, it is not subject to competition from other oil and gas property purchasers. See Item 2, Properties. Factors that may adversely affect the Partnership include delays in completing arrangements for the sale of production, availability of a market for production, rising operating costs of producing oil and gas and complying with applicable water and air pollution control statutes, increasing costs and difficulties of transportation, and marketing of competitive fuels. Moreover, domestic oil and gas must compete with imported oil and gas and with coal, atomic energy, hydroelectric power and other forms of energy. Regulation Oil and Gas Production - The production and sale of oil and gas is subject to federal and state governmental regulation in several respects, such as existing price controls on natural gas and possible price controls on crude oil, regulation of oil and gas production by state and local governmental agencies, pollution and environmental controls and various other direct and indirect regulation. Many jurisdictions have periodically imposed limitations on oil and gas production by restricting the rate of flow for oil and gas wells below their actual capacity to produce and by imposing acreage limitations for the drilling of wells. The federal government has the power to permit increases in the amount of oil imported from other countries and to impose pollution control measures. Various aspects of the Partnership's oil and gas activities are regulated by administrative agencies under statutory provisions of the states where such activities are conducted and by certain agencies of the federal government for operations on Federal leases. The regulatory burden on the oil and gas industry increases the Partnership's cost of doing business, and, consequently, affects its profitability. Regulation of Sales and Transportation of Natural Gas. Our sales of natural gas are affected by the availability, terms and cost of transportation. The price and terms for access to pipeline transportation are subject to extensive regulation. In recent years, the FERC has undertaken various initiatives to increase competition within the natural gas industry. As a result of initiatives like FERC Order No. 636, issued in April 1992, the interstate natural gas transportation and marketing system has been substantially restructured to remove various barriers and practices that historically limited non-pipeline natural gas sellers, including producers, from effectively competing with interstate pipelines for sales to local distribution companies and large industrial and commercial customers. The most significant provisions of Order No. 636 require that interstate pipelines provide firm and interruptible transportation service on an open access basis that is equal for all natural gas supplies. In many instances, the results of Order No. 636 and related initiatives have been to substantially reduce or eliminate the interstate pipelines' traditional role as wholesalers of natural gas in favor of providing only storage and transportation services. While the United States Court of Appeals upheld most of Order No. 636, certain related FERC orders, including the individual pipeline restructuring proceedings, are still subject to judicial review and may be reversed or remanded in whole or in part. While the outcome of these proceedings cannot be predicted with certainty, we do not believe that we will be affected materially differently than its competitors. The FERC has also announced several important transportation-related policy statements and proposed rule changes, including a statement of policy and a request for comments concerning alternatives to its traditional cost-of- service rate making methodology to establish the rates interstate pipelines may charge for their services. A number of pipelines have obtained FERC authorization to charge negotiated rates as one such alternative. In February 1997, the FERC announced a broad inquiry into issues facing the natural gas industry to assist the FERC in establishing regulatory goals and priorities in the post-Order No. 636 environment. Similarly, the Texas Railroad Commission has been reviewing changes to its regulations governing transportation and gathering services provided by intrastate pipelines and gatherers. While the changes being considered by these federal and state regulators would affect us only indirectly, they are intended to further enhance competition in natural gas markets. We cannot predict what further action the FERC or state regulators will take on these matters, however, we do not believe that it will be affected by any action taken materially differently than other natural gas producers with which it competes. Additional proposals and proceedings that might affect the natural gas industry are pending before Congress, the FERC, state commissions and the courts. The natural gas industry historically has been very heavily regulated; therefore, there is no assurance that the less stringent regulatory approach recently pursued by the FERC and Congress will continue. Oil Price Controls and Transportation Rates. Sales of crude oil, condensate and gas liquids by us are not currently regulated and are made at market prices. The price we receive from the sale of these products may be affected by the cost of transporting the products to market. Environmental and Health Controls. Extensive federal, state and local regulatory and common laws regulating the discharge of materials into the environment or otherwise relating to the protection of the environment affect our oil and natural gas operations. Numerous governmental departments issue rules and regulations to implement and enforce such laws, which are often difficult and costly to comply with and which carry substantial civil and even criminal penalties for failure to comply. Some laws, rules and regulations relating to protection of the environment may, in certain circumstances, impose strict liability for environmental contamination, rendering a person liable for environmental damages and cleanup costs without regard to negligence or fault on the part of such person. Other laws, rules and regulations may restrict the rate of oil and natural gas production below the rate that would otherwise exist or even prohibit exploration and production activities in sensitive areas. In addition, state laws often require various forms of remedial action to prevent pollution, such as closure of inactive pits and plugging of abandoned wells. The regulatory burden on the oil and natural gas industry increases our cost of doing business and consequently affects our profitability. We believe that we are in substantial compliance with current applicable environmental laws and regulations and that continued compliance with existing requirements will not have a material adverse impact on our operations. However, environmental laws and regulations have been subject to frequent changes over the years, and the imposition of more stringent requirements could have a material adverse effect upon our capital expenditures, earnings or competitive position. Additionally, given the intense litigation environment in the United States, a threat exists of lawsuits alleging personal injury and property damage from environmental contamination alleged to be created by us or related entities. Potential liability in such lawsuits can include not only compensatory, but substantial punitive damages as well. We are not aware of any such suits currently pending or threatened. The Comprehensive Environmental Response, Compensation and Liability Act ("CERCLA"), also known as the "Superfund" law, imposes liability, without regard to fault on certain classes of persons that are considered to be responsible for the release of a "hazardous substance" into the environment. These persons include the current or former owner or operator of the disposal site or sites where the release occurred and companies that disposed or arranged for the disposal of hazardous substances. Under CERCLA such persons may be subject to joint and several liability for the costs of investigating and cleaning up hazardous substances that have been released into the environment, for damages to natural resources and for the costs of certain health studies. In addition, companies that incur liability frequently also confront third party claims because it is not uncommon for neighboring landowners and other third parties to file claims for personal injury and property damage allegedly caused by hazardous substances or other pollutants released into the environment from a polluted site. Potential liability also exists under CERCLA for natural resource damage. A Natural Resource Damage Action (NRDA) could result in liability being assessed for restoration to natural resources. The Federal Oil Pollution Act of 1990 ("OPA") regulates the release of oil into water or other areas designated by the statute. A release could result in our being held responsible for the cost of remediating the release, OPA specified damages and natural resource damages. The extent of such liability could be extensive. A release of oil in harmful quantities or other materials into water or other specified areas could also result in our being held responsible under the Clean Water Act ("CWA") for the costs of remediation, and any civil and criminal fines and penalties. The Federal Solid Waste Disposal Act, as amended by the Resource Conservation and Recovery Act of 1976 ("RCRA"), regulates the generation, transportation, storage, treatment and disposal of solid and hazardous wastes and can require cleanup of abandoned hazardous waste disposal sites as well as waste management areas operating facilities. RCRA currently excludes drilling fluids, produced waters and other wastes associated with the exploration, development or production of oil and natural gas from regulation as "hazardous waste." Disposal of such non-hazardous oil and natural gas exploration, development and production wastes usually are regulated by state law. Other wastes handled at exploration and production sites or used in the course of providing well services may not fall within this exclusion. Moreover, stricter standards for waste handling and disposal may be imposed on the oil and natural gas industry in the future. From time to time legislation is proposed in Congress that would revoke or alter the current exclusion of exploration, development and production wastes from the RCRA definition of "hazardous wastes" thereby potentially subjecting such wastes to more stringent handling, disposal and cleanup requirements. If such legislation were enacted it could have a significant impact on the operating costs of Southwest and Sierra, as well as the oil and natural gas industry and well servicing industry in general. The impact of future revisions to environmental laws and regulations cannot be predicted. In addition, if our operations were to trigger regulation under RCRA, we could be required to satisfy certain financial criteria to ensure financial ability to comply with RCRA regulations. Proof of financial responsibility could be required in the form of dedicated trust funds, irrevocable letters of credit, posting of bonds, etc. The Federal Clean Water Act ("CWA") contains provisions that may result in the imposition of certain water pollution control requirements with respect to water releases from our operations. We may be required to incur certain capital expenditures in the next several years for water pollution control equipment in connection with obtaining and maintaining National Pollutant Discharge Elimination Systems ("NPDES") permits. However, we believe our operations will not be materially adversely affected by any such requirements, and the requirements are not expected to be any more burdensome to us than to other similarly situated companies involved in oil and natural gas exploration and production activities or well surfacing activities. Our operations are also subject to the federal Clean Air Act ("CAA") and comparable state and local requirements. Amendments to the CAA were adopted in 1990 and contain provisions that may result in the gradual imposition of certain pollution control requirements with respect to air emissions from our operations. We may be required to incur certain capital expenditures in the next several years for air pollution control equipment in connection with obtaining and maintaining operating permits and approvals for air emissions. However, we believe our operations will not be materially adversely affected by any such requirements, and the requirements are not expected to be any more burdensome to us than to other similarly situated companies involved in oil and natural gas exploration and production activities or well servicing activities. We maintain insurance against "sudden and accidental" occurrences, which may cover some, but not all, of the environmental risks described above. Most significantly, the insurance we maintain will not cover the risks described above which occur over a sustained period of time. Further, there can be no assurance that such insurance will continue to be available to cover all such costs or that such insurance will be available at premium levels that justify its purchase. The occurrence of a significant event not fully insured or indemnified against could have a material adverse effect on our financial condition and operations. Limited partners should be aware that the assessment of liability associated with environmental liabilities is not always correlated to the value of a particular project. Accordingly, liability associated with the environment under local, state, or federal regulations, particularly clean ups under CERCLA, can exceed the value of our investment in the associated site. Regulation of Oil and Natural Gas Exploration and Production. Our exploration and production operations are subject to various types of regulation at the federal, state and local levels. Such regulations include requiring permits and drilling bonds for the drilling of wells, regulating the location of wells, the method of drilling and casing wells, and the surface use and restoration of properties upon which wells are drilled. Many states also have statutes or regulations addressing conservation matters, including provisions for the utilization or pooling of oil and natural gas properties, the establishment of maximum rates of production from oil and natural gas wells and the regulation of spacing, plugging and abandonment of such wells. Some state statutes limit the rate at which oil and natural gas can be produced from our properties. Partnership Employees The Partnership has no employees; however the Managing General Partner has a staff of geologists, engineers, accountants, landmen and clerical staff who engage in Partnership activities and operations and perform additional services for the Partnership as needed. In addition to the Managing General Partner's staff, the Partnership engages independent consultants such as petroleum engineers and geologists as needed. As of December 31, 2002, there were 82 individuals directly employed by the Managing General Partner in various capacities. Item 2. Properties In determining whether an interest in a particular producing property was to be acquired, the Managing General Partner considered such criteria as estimated oil and gas reserves, estimated cash flow from the sale of production, present and future prices of oil and gas, the extent of undeveloped and unproved reserves, the potential for secondary, tertiary and other enhanced recovery projects and the availability of markets. As of December 31, 2002, the Partnership possessed an interest in oil and gas properties located in Columbia County of Arkansas; Eddy and Lea Counties of New Mexico; and Ector, Duval, Midland, Schleicher, Scurry, Ward and Winkler Counties of Texas. These properties consist of various interests in approximately 405 wells and units. Due to the Partnership's objective of maintaining current operations without engaging in the drilling of any developmental or exploratory wells, or additional acquisitions of producing properties, there have not been any significant changes in properties during 2002, 2001 and 2000 There were no leases sold during 2002, 2001 and 2000. Significant Properties The following table reflects the significant properties in which the Partnership has an interest: Date Purchased No. of Proved Reserves* Name and Location and Interest Wells Oil Gas (bbls) (mcf) - ------------------ ------------- ------- -------- -------- - -------- --- ----- ----- Jal-Mat 10/91 at 119 2,000 157,000 Acquisition Lea County, New 1.8% to 28% 119 2,000(1) 157,000( Mexico 1) working interest NE Vacuum Abo 9/91 at 13 98,000 52,000 Acquisition 25% to 50% 7 71,000(1 45,000(1 ) ) Lea County, working interest New Mexico SWRI Acquisition 1/92 at 5.8% 5 25,000 85,000 to Ward and Midland 50% working 4 22,000(1 76,000(1 County, interest ) ) Texas Eddy County, New Mexico (1)Amounts present proved developed reserves from currently producing zones. *Ryder Scott Company, L.P. prepared the reserve and present value data for the Partnership's existing properties as of January 1, 2003. The reserve estimates were made in accordance with guidelines established by the Securities and Exchange Commission pursuant to Rule 4-10(a) of Regulation S- X. Such guidelines require oil and gas reserve reports be prepared under existing economic and operating conditions with no provisions for price and cost escalation except by contractual arrangements. Oil price adjustments were made in the individual evaluations to reflect oil quality, gathering and transportation costs. The results of the reserve report as of January 1, 2003 are an average price of $28.99 per barrel. Gas price adjustments were made in the individual evaluations to reflect BTU content, gathering and transportation costs and gas processing and shrinkage. The results of the reserve report as of January 1, 2003 are an average price of $4.11 per Mcf. As also discussed in Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations, oil and gas prices were subject to frequent changes in 2002. The evaluation of oil and gas properties is not an exact science and inevitably involves a significant degree of uncertainty, particularly with respect to the quantity of oil or gas that any given property is capable of producing. Estimates of oil and gas reserves are based on available geological and engineering data, the extent and quality of which may vary in each case and, in certain instances, may prove to be inaccurate. Consequently, properties may be depleted more rapidly than the geological and engineering data have indicated. Unanticipated depletion, if it occurs, will result in lower reserves than previously estimated; thus an ultimately lower return for the Partnership. Basic changes in past reserve estimates occur annually. As new data is gathered during the subsequent year, the engineer must revise his earlier estimates. A year of new information, which is pertinent to the estimation of future recoverable volumes, is available during the subsequent year evaluation. In applying industry standards and procedures, the new data may cause the previous estimates to be revised. This revision may increase or decrease the earlier estimated volumes. Pertinent information gathered during the year may include actual production and decline rates, production from offset wells drilled to the same geologic formation, increased or decreased water production, workovers, and changes in lifting costs, among others. Accordingly, reserve estimates are often different from the quantities of oil and gas that are ultimately recovered. The Partnership has reserves, which are classified as proved developed and proved undeveloped. All of the proved reserves are included in the engineering reports, which evaluate the Partnership's present reserves. Because the Partnership does not engage in drilling activities, the development of proved undeveloped reserves is conducted pursuant to farm- out arrangements with the Managing General Partner or unrelated third parties. Generally, the Partnership retains a carried interest such as an overriding royalty interest under the terms of a farm-out. The Partnership, or the owners of properties in which the Partnership owns an interest, can engage in workover projects or supplementary recovery projects, for example, to extract behind the pipe reserves. See Part II, Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations. Item 3. Legal Proceedings There are no material pending legal proceedings to which the Partnership is a party. Item 4. Submission of Matters to a Vote of Security Holders No matter was submitted to a vote of security holders during the fourth quarter of 2002 through the solicitation of proxies or otherwise. Part II Item 5. Market for the Registrant's Common Equity and Related Stockholder Matters Market Information Limited partnership interests, or units, in the Partnership were initially offered and sold for a price of $500. Limited partner units are not traded on any exchange and there is no public or organized trading market for them. The Managing General Partner has become aware of certain limited and sporadic transfers of units between limited partners and third parties, but has no verifiable information regarding the prices at which such units have been transferred. Further, a transferee may not become a substitute limited partner without the consent of the Managing General Partner. The Managing General Partner has the right, but not the obligation, to purchase limited partnership units should an investor desire to sell. The value of the unit is determined by adding the sum of (1) current assets less liabilities and (2) the present value of the future net revenues attributable to proved reserves and by discounting the future net revenues at a rate not in excess of the prime rate charged by NationsBank, N.A. of Midland, Texas plus one percent (1%), which value shall be further reduced by a risk factor discount of no more than one-third (1/3) to be determined by the Managing General Partner in its sole and absolute discretion. As of December 31, 2002, the Managing General Partner purchased no limited partner units. Southwest, as Managing General Partner, evaluated several liquidity alternatives for the partnerships in 2001 and 2002. During 2002, Southwest specifically pursued the possible roll-up and merger of twenty- one (21) partnerships with the general partner. Because of the complexities and conflicts of interest in such a transaction, the Managing General Partner did not make a formal repurchase offer in 2002 but has responded to limited partners desiring to sell their units in the partnerships on an "as requested" basis. Southwest anticipates that it will not make a formal repurchase offer during 2003 because the merger is still being contemplated and Southwest's Registration Statement on Form S-4 relating to the merger is still in the review process with the Securities and Exchange Commission. Repurchases by Southwest, however, will continue to be made on an "as requested" basis. In 2001, 60 limited partner units were tendered to and purchased by the Managing General Partner at an average base price of $98.72 per unit. In 2000, 64 limited partner units were tendered to and purchased by the Managing General Partner at an average base price of $52.28 per unit. Number of Limited Partner Interest Holders As of December 31, 2002, there were 527 holders of limited partner units in the Partnership. Distributions Pursuant to Article III, Section 3.05 of the Partnership's Certificate and Agreement of Limited Partnership "Net Cash Flow" is distributed to the partners on a quarterly basis. "Net Cash Flow" is defined as "the cash generated by the Partnership's investments in producing oil and gas properties, less (i) General and Administrative Costs, (ii) Operating Costs, and (iii) any reserves necessary to meet current and anticipated needs of the Partnership, as determined in the sole discretion of the Managing General Partner." During 2002, distributions were made totaling $62,189, with $55,970 distributed to the limited partners and $6,219 to the general partners. For the year ended December 31, 2002, distributions of $5.14 per limited partner unit were made, based upon 10,889 limited partner units outstanding. During 2001, distributions were made totaling $379,443, with $341,499 distributed to the limited partners and $37,944 to the general partners. For the year ended December 31, 2001, distributions of $31.36 per limited partner unit were made, based upon 10,889 limited partner units outstanding. During 2000, quarterly distributions were made totaling $406,644, with $365,980 distributed to the limited partners and $40,664 to the general partners. For the year ended December 31, 2000, distributions of $33.61 per limited partner unit were made, based upon 10,889 limited partner units outstanding. Item 6. Selected Financial Data The following selected financial data for the years ended December 31, 2002, 2001, 2000, 1999 and 1998 should be read in conjunction with the financial statements included in Item 8: Year Ended December 31, ------------------------------------------------ ------------------- 2002 2001 2000 1999 1998 (Restate d) (1) ---- ---- ---- ---- ---- Revenues $ 768,406 872,635 1,154,75 735,235 682,327 3 Net income (loss) before cumulative 92,870 138,618 496,120 143,687 (762,994 effect ) Net income (loss) 85,870 138,618 496,120 143,687 (762,994 ) Partners' share of net income (loss): General partners 12,987 20,362 52,512 17,369 (4,789) Limited partners 72,883 118,256 443,608 126,318 (758,205 ) Limited partners' net income(loss) per unit before cumulative 7.34 effect 10.86 40.74 11.60 (69.63) Limited partners' net income (loss) 6.69 per unit 10.86 40.74 11.60 (69.63) Limited partners' cash distributions per unit 5.14 31.36 33.61 6.54 17.00 Total assets $ 386,903 363,308 603,818 514,356 448,962 (1) See Notes 3 and 9 to the Partnership's financial statements for a description of the Partnership's change in accounting principle. Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations General The Partnership was formed to acquire interests in producing oil and gas properties, to produce and market crude oil and natural gas produced from such properties and to distribute any net proceeds from operations to the general and limited partners. Net revenues from producing oil and gas properties are not reinvested in other revenue producing assets except to the extent that producing facilities and wells are reworked or where methods are employed to improve or enable more efficient recovery of oil and gas reserves. The economic life of the Partnership thus depends on the period over which the Partnership's oil and gas reserves are economically recoverable. Increases or decreases in Partnership revenues and, therefore, distributions to partners will depend primarily on changes in the prices received for production, changes in volumes of production sold, lease operating expenses, enhanced recovery projects, offset drilling activities pursuant to farm-out arrangements and on the depletion of wells. Since wells deplete over time, production can generally be expected to decline from year to year. Well operating costs and general and administrative costs usually decrease with production declines; however, these costs may not decrease proportionately. Net income available for distribution to the limited partners is therefore expected to fluctuate in later years based on these factors. Based on current conditions, management anticipates performing drilling projects and workovers during the years 2003 and 2004 to enhance production. The partnership may have an increase in production volumes for the years 2003 and 2004, otherwise, the partnership will most likely experience the historical production decline, which have approximated 8% per year. Critical Accounting Policies Full cost ceiling calculations The Partnership follows the full cost method of accounting for its oil and gas properties. The full cost method subjects companies to quarterly calculations of a "ceiling", or limitation on the amount of properties that can be capitalized on the balance sheet. If the Partnership's capitalized costs are in excess of the calculated ceiling, the excess must be written off as an expense. The Partnership's discounted present value of its proved oil and natural gas reserves is a major component of the ceiling calculation, and represents the component that requires the most subjective judgments. Estimates of reserves are forecasts based on engineering data, projected future rates of production and the timing of future expenditures. The process of estimating oil and natural gas reserves requires substantial judgment, resulting in imprecise determinations, particularly for new discoveries. Different reserve engineers may make different estimates of reserve quantities based on the same data. The Partnership's reserve estimates are prepared by outside consultants. The passage of time provides more qualitative information regarding estimates of reserves, and revisions are made to prior estimates to reflect updated information. However, there can be no assurance that more significant revisions will not be necessary in the future. If future significant revisions are necessary that reduce previously estimated reserve quantities, it could result in a full cost property writedown. In addition to the impact of these estimates of proved reserves on calculation of the ceiling, estimates of proved reserves are also a significant component of the calculation of DD&A. While the quantities of proved reserves require substantial judgment, the associated prices of oil and natural gas reserves that are included in the discounted present value of the reserves do not require judgment. The ceiling calculation dictates that prices and costs in effect as of the last day of the period are generally held constant indefinitely. Because the ceiling calculation dictates that prices in effect as of the last day of the applicable quarter are held constant indefinitely, the resulting value is not indicative of the true fair value of the reserves. Oil and natural gas prices have historically been cyclical and, on any particular day at the end of a quarter, can be either substantially higher or lower than the Partnership's long-term price forecast that is a barometer for true fair value. In the fourth quarter of 2002, the Partnership changed methods of accounting for depletion of capitalized costs from the units-of-revenue method to the units-of-production method. The newly adopted accounting principle is preferable in the circumstances because the units-of- production method results in a better matching of the costs of oil and gas production against the related revenue received in periods of volatile prices for production as have been experienced in recent periods. Additionally, the units-of-production method is the predominant method used by full cost companies in the oil and gas industry, accordingly, the change improves the comparability of the Partnership's financial statements with its peer group. The effect of this change in method was to increase 2002 depletion expense by $2,000 and decrease 2002 net income by $9,000. See Note 3 of the notes to the Partnership's financial statements. Results of Operations A. General Comparison of the Years Ended December 31, 2002 and 2001 The following table provides certain information regarding performance factors for the years ended December 31, 2002 and 2001: Year Ended Percenta ge December 31, Increase 2002 2001 (Decreas e) ------ ------ -------- ------- Average price per $ 22.91 2% barrel of oil 22.42 Average price per mcf $ 2.87 (16%) of gas 3.40 Oil production in 27,900 30,900 (10%) barrels Gas production in mcf 45,000 52,000 (13%) Gross oil and gas $ 768,232 869,806 (12%) revenue Net oil and gas revenue $ 208,247 278,649 (25%) Partnership $ 62,189 379,443 (84%) distributions Limited partner $ 55,970 341,499 (84%) distributions Per unit distribution $ 5.14 (84%) to limited partners 31.36 Number of limited 10,889 10,889 partner units Revenues The Partnership's oil and gas revenues decreased to $768,232 from $869,806 for the years ended December 31, 2002 and 2001, respectively, a decrease of 12%. The principal factors affecting the comparison of the years ended December 31, 2002 and 2001 are as follows: 1. The average price for a barrel of oil received by the Partnership increased during the year ended December 31, 2002 as compared to the year ended December 31, 2001 by 2%, or $.49 per barrel, resulting in an increase of approximately $13,700 in revenues. Oil sales represented 83% of total oil and gas sales during the year ended December 31, 2002 as compared to 80% during the year ended December 31, 2001. The average price for an mcf of gas received by the Partnership decreased during the same period by 16%, or $.53 per mcf, resulting in a decrease of approximately $23,900 in revenues. The net total decrease in revenues due to the change in prices received from oil and gas production is approximately $10,200. The market price for oil and gas has been extremely volatile over the past decade and management expects a certain amount of volatility to continue in the foreseeable future. 2. Oil production decreased approximately 3,000 barrels or 10% during the year ended December 31, 2002 as compared to the year ended December 31, 2001, resulting in a decrease of approximately $67,300 in revenues. Gas production decreased approximately 7,000 mcf or 13% during the same period, resulting in a decrease of approximately $23,800 in revenues. The total decrease in revenues due to the change in production is approximately $91,100. Costs and Expenses Total costs and expenses decreased to $675,536 from $734,017 for the years ended December 31, 2002 and 2001, respectively, a decrease of 8%. The decrease is the result of lower lease operating costs and depletion expense, partially offset by an increase in general and administrative costs. 1. Lease operating costs and production taxes were 5% lower, or approximately $31,200 less during the year ended December 31, 2002 as compared to the year ended December 31, 2001. 2. General and administrative costs consist of independent accounting and engineering fees, computer services, postage, and Managing General Partner personnel costs. General and administrative costs increased 1% or approximately $700 during the year ended December 31, 2002 as compared to the year ended December 31, 2001. 3. Depletion expense decreased to $37,000 for the year ended December 31, 2002 from $65,000 for the same period in 2001. This represents a decrease of 43%. In the fourth quarter of 2002, the Partnership changed methods of accounting for depletion of capitalized costs from the units-of-revenue method to the units-of-production method. The newly adopted accounting principle is preferable in the circumstances because the units-of-production method results in a better matching of the costs of oil and gas production against the related revenue received in periods of volatile prices for production as have been experienced in recent periods. Additionally, the units-of-production method is the predominant method used by full cost companies in the oil and gas industry, accordingly, the change improves the comparability of the Partnership's financial statements with its peer group. The effect of this change in method was to increase 2002 depletion expense by $2,000 and decrease 2002 net income by $9,000. See Note 3 of the notes to the Partnership's financial statements. The major factor in the decrease in depletion expense between the comparative periods was the increase in the price of oil and gas used to determine the Partnership's reserves for January 1, 2003 as compared to 2002, which provided more economically recoverable proved reserves at January 1, 2003 which caused the depletion rate per equivalent unit produced to decline. Also, as discussed above, the total equivalent units produced in 2002 declined from 2001. Results of Operations B. General Comparison of the Years Ended December 31, 2001 and 2000 The following table provides certain information regarding performance factors for the years ended December 31, 2001 and 2000: Year Ended Percenta ge December 31, Increase 2001 2000 (Decreas e) ----- ----- -------- -------- Average price per $ 22.42 (20%) barrel of oil 28.15 Average price per $ 3.40 (14%) mcf of gas 3.97 Oil production in 30,900 33,700 (8%) barrels Gas production in 52,000 50,700 3% mcf Gross oil and gas $ 869,806 1,150,00 (24%) revenue 0 Net oil and gas $ 278,649 597,207 (53%) revenue Partnership $ 379,443 406,644 (7%) distributions Limited partner $ 341,499 365,980 (7%) distributions Per unit $ 31.36 (7%) distribution to 33.61 limited partners Number of limited 10,889 10,889 partner units Revenues The Partnership's oil and gas revenues decreased to $869,806 from $1,150,000 for the years ended December 31, 2001 and 2000, respectively, a decrease of 24%. The principal factors affecting the comparison of the years ended December 31, 2001 and 2000 are as follows: 1. The average price for a barrel of oil received by the Partnership decreased during the year ended December 31, 2001 as compared to the year ended December 31, 2000 by 20%, or $5.73 per barrel, resulting in a decrease of approximately $177,100 in revenues. Oil sales represented 80% of total oil and gas sales during the year ended December 31, 2001 as compared to 82% during the year ended December 31, 2000. The average price for an mcf of gas received by the Partnership decreased during the same period by 14%, or $.57 per mcf, resulting in a decrease of approximately $29,600 in revenues. The total decrease in revenues due to the change in prices received from oil and gas production is approximately $206,700. The market price for oil and gas has been extremely volatile over the past decade and management expects a certain amount of volatility to continue in the foreseeable future. 2. Oil production decreased approximately 2,800 barrels or 8% during the year ended December 31, 2001 as compared to the year ended December 31, 2000, resulting in a decrease of approximately $78,800 in revenues. Gas production increased approximately 1,300 mcf or 3% during the same period, resulting in an increase of approximately $5,200 in revenues. The net total decrease in revenues due to the change in production is approximately $73,600. Costs and Expenses Total costs and expenses increased to $734,017 from $658,633 for the years ended December 31, 2001 and 2000, respectively, an increase of 11%. The increase is the result of higher lease operating costs, general and administrative costs and depletion expense. 1. Lease operating costs and production taxes were 7% higher, or approximately $38,400 more during the year ended December 31, 2001 as compared to the year ended December 31, 2000. 2. General and administrative costs consist of independent accounting and engineering fees, computer services, postage, and Managing General Partner personnel costs. General and administrative costs increased 1% or approximately $1,000 during the year ended December 31, 2001 as compared to the year ended December 31, 2000. 3. Depletion expense increased to $65,000 for the year ended December 31, 2001 from $29,000 for the same period in 2000. This represents an increase of 124%. Depletion is calculated using the units-of-revenue method of amortization based on a percentage of current period gross revenues to total future gross oil and gas revenues, as estimated by the Partnership's independent petroleum consultants. The major factor in the increase in depletion expense between the comparative periods was the decrease in the price of oil and gas used to determine the Partnership's reserves for January 1, 2002 as compared to 2001, and the decrease in oil and gas revenues received by the Partnership during 2001 as compared to 2000. Revisions of previous estimates can be attributed to the changes in production performance, oil and gas price and production costs. The impact of the revision would have increased depletion expense approximately $26,000 as of December 31, 2000. C. Revenue and Distribution Comparison Partnership income for the years ended December 31, 2002, 2001 and 2000 was $85,870, $138,618 and $496,120, respectively. Excluding the effects of depreciation, depletion and amortization, net income would have been $122,870 in 2002, $203,618 in 2001 and $525,120 in 2000. Correspondingly, Partnership distributions for the years ended December 31, 2002, 2001 and 2000 were $62,189, $379,443 and $406,644, respectively. These differences are indicative of the changes in oil and gas prices, production and property sales. The source for the 2002 distributions of $62,189 were oil and gas operations of approximately $80,900 and the change in oil and gas properties of approximately $(16,500), resulting in excess cash for contingencies or subsequent distributions. The source for the 2001 distributions of $379,443 were oil and gas operations of approximately $316,400 and the change in oil and gas properties of approximately $(16,700), with the balance from available cash on hand at the beginning of the period. The source for the 2000 distributions of $406,644 were oil and gas operations of approximately $493,500 and the change in oil and gas properties of approximately $(29,500), resulting in excess cash for contingencies or subsequent distributions. Total distributions during the year ended December 31, 2002 were $62,189 of which $55,970 was distributed to the limited partners and $6,219 to the general partners. The per unit distribution to limited partners during the same period was $5.14. Total distributions during the year ended December 31, 2001 were $379,443 of which $341,499 was distributed to the limited partners and $37,944 to the general partners. The per unit distribution to limited partners during the same period was $31.36. Total distributions during the year ended December 31, 2000 were $406,644 of which $365,980 was distributed to the limited partners and $40,664 to the general partners. The per unit distribution to limited partners during the same period was $33.61. Since inception of the Partnership, cumulative monthly cash distributions of $5,492,571 have been made to the partners. As of December 31, 2002, $4,969,769 or $456.40 per limited partner unit has been distributed to the limited partners, representing a 91% return of capital contributed. Liquidity and Capital Resources The primary source of cash is from operations, the receipt of income from interests in oil and gas properties. The Partnership knows of no material change, nor does it anticipate any such change. Cash flows provided by operating activities were approximately $80,900 in 2002 compared to $316,400 in 2001 and approximately $493,500 in 2000. The primary source of the 2002 cash flow from operating activities was profitable operations. Cash flows used in investing activities were approximately $16,500 in 2002 compared to $16,700 in 2001 and approximately $29,500 in 2000. The principle use of the 2002 cash flow from investing activities was additions to oil and gas properties. Cash flows used in financing activities were approximately $62,300 in 2002 compared to $379,100 in 2001 and approximately $406,700 in 2000. The only use in the 2002 financing activities was the distributions to partners. As of December 31, 2002 the Partnership had approximately $103,800 in working capital. The Managing General Partner knows of no unusual contractual commitments. Although the Partnership held many long-lived properties at inception, because of the restrictions on property development imposed by the partnership agreement, the Partnership cannot develop its non producing properties, if any. Without continued development, the producing reserves continue to deplete. Accordingly, as the Partnership's properties have matured and depleted, the net cash flows from operations for the Partnership has steadily declined, except in periods of substantially increased commodity pricing. Maintenance of properties and administrative expenses for the Partnership are increasing relative to production. As the properties continue to deplete, maintenance of properties and administrative costs as a percentage of production are expected to continue to increase. The Managing General Partner has examined various alternatives to address the issue of depleting producing reserves. Continuing operations exposes the Partnership to an inevitable decline in operating results and distributions of cash. Liquidating the Partnership would result in immediate realization of cash for limited partners, but prices paid by purchasers of Partnership property in liquidation would likely include a substantial discount for risks and uncertainties of future cash flows, as well as any development risks. After reviewing various alternatives, we initiated a plan to merge the Partnership and 20 other limited partnerships with and into the Managing General Partner. On October 17, 2002, the Managing General Partner filed a Registration Statement on form S-4 with the Securities and Exchange Commission relating to this proposed merger. There is no assurance, however, that this merger will be consummated. Liquidity - Managing General Partner The Managing General Partner has a highly leveraged capital structure with approximately $124.0 million of principal due between December 31, 2002 and December 31, 2004. The Managing General Partner is constantly monitoring its cash position and its ability to meet its financial obligations as they become due, and in this effort, is continually exploring various strategies for addressing its current and future liquidity needs. The Managing General Partner regularly pursues and evaluates recapitalization strategies and acquisition opportunities (including opportunities to engage in mergers, consolidations or other business combinations) and at any given time may be in various stages of evaluating such opportunities. Based on current production, commodity prices and cash flow from operations, the Managing General Partner has adequate cash flow to fund debt service, developmental projects and day to day operations, but it is not sufficient to build a cash balance which would allow the Managing General Partner to meet its debt principal maturities scheduled for 2004. Therefore the Managing General Partner is currently seeking to renegotiate the terms of its obligations, including extending maturity dates, or to engage new lenders or equity investors in order to satisfy its financial obligations maturing in 2004. There can be no assurance that the Managing General Partner's debt restructuring efforts will be successful. In the event these efforts are unsuccessful, the Managing General Partner would need to look to other alternatives to meet its debt obligations, including potentially selling its assets. There can be no assurance, however, that the sales of assets can be successfully accomplished on terms acceptable to the Managing General Partner. Please see the Partnership's Quarterly Report on Form 10- Q for the quarterly period ended September 30, 2003, which will be filed with the Commission on or before November 14, 2003, for updated information on the liquidity of the Managing General Partner. The liquidity of the Managing General Partner, however, does not have a material impact on the operations of the Partnership. The partnership agreement of the Partnership allows the limited partners to elect a successor managing general partner to continue Partnership operations. Recent Accounting Pronouncements The FASB has issued Statement No. 143 "Accounting for Asset Retirement Obligations" which establishes requirements for the accounting of removal- type costs associated with asset retirements. The standard is effective for fiscal years beginning after June 15, 2002, with earlier application encouraged. The new standard requires the Partnership to recognize a liability for the present value of all legal obligations associated with the retirement of tangible long-lived assets and to capitalize an equal amount as a cost of the asset and allocate the additional cost over the estimated useful life of the asset. On January 1, 2003, the Partnership recorded additional costs, net of accumulated depreciation, depletion and amortization, of approximately $174,419, a long term liability of approximately $751,711 and a loss of approximately $577,292 for the cumulative effect on depreciation, depletion and amortization of the additional costs and accretion expense on the liability related to expected abandonment costs of its oil and natural gas producing properties. Item 7A. Quantitative and Qualitative Disclosures About Market Risk The Partnership is not a party to any derivative or embedded derivative instruments. Item 8. Financial Statements and Supplementary Data Index to Financial Statements Page Independent Auditors Report 23 Balance Sheets 24 Statements of Operations 25 Statement of Changes in Partners' Equity 26 Statements of Cash Flows 27 Notes to Financial Statements 28 INDEPENDENT AUDITORS REPORT The Partners Southwest Oil & Gas Income Fund X-B, L.P. (A Delaware Limited Partnership): We have audited the accompanying balance sheets of Southwest Oil & Gas Income Fund X-B, L.P. (the "Partnership") as of December 31, 2002 and 2001, and the related statements of operations, changes in partners' equity and cash flows for each of the years in the three year period ended December 31, 2002. These financial statements are the responsibility of the Partnership's management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of Southwest Oil & Gas Income Fund X-B, L.P. as of December 31, 2002 and 2001 and the results of its operations and its cash flows for each of the years in the three year period ended December 31, 2002 in conformity with accounting principles generally accepted in the United States of America. As discussed in Notes 3 and 9 to the financial statements, the Partnership changed its method of computing depletion in 2002. KPMG LLP Midland, Texas March 14, 2003, except as to Notes 3, 9 and 10, which is as of July 11, 2003 Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Balance Sheets December 31, 2002 and 2001 2002 2001 (Restate d) ----- ----- Assets - --------- Current assets: Cash and cash equivalents $ 15,247 13,190 Receivable from Managing 88,831 39,827 General Partner -------- -------- ---- ---- Total current assets 104,078 53,017 -------- -------- ---- ---- Oil and gas properties - using the full- cost method of accounting 4,476,53 4,459,99 1 7 Less accumulated depreciation, depletion and 4,193,70 4,149,70 amortization 6 6 -------- -------- ---- ---- Net oil and gas 282,825 310,291 properties -------- -------- ---- ---- $ 386,903 363,308 ======= ======= Liabilities and Partners' Equity - ---------------------------- - ------------ Current liability - $ 287 373 distribution payable -------- -------- ---- ---- Partners' equity: General partners 549 (6,219) Limited partners 386,067 369,154 -------- -------- ---- ---- Total partners' equity 386,616 362,935 -------- -------- ---- ---- $ 386,903 363,308 ======= ======= The accompanying notes are an integral part of these financial statements. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Statements of Operations Years ended December 31, 2002, 2001 and 2000 2002 2001 2000 (Restate d) ----- ----- ----- Revenues - ------------- Oil and gas income $ 768,232 869,806 1,150,00 0 Interest from operations 174 2,829 4,483 Miscellaneous income - - 270 -------- -------- -------- -- -- ---- 768,406 872,635 1,154,75 3 -------- -------- -------- -- -- ---- Expenses - ------------ Production 559,985 591,157 552,793 General and administrative 78,551 77,860 76,840 Depreciation, depletion and 37,000 65,000 29,000 amortization -------- -------- -------- -- -- ---- 675,536 734,017 658,633 -------- -------- -------- -- -- ---- Net income before cumulative 92,870 138,618 496,120 effect Cumulative effect of change in (7,000) - - accounting principle -------- -------- -------- -- -- ---- Net income $ 85,870 138,618 496,120 ====== ====== ======= Net income allocated to: Managing General Partner $ 11,688 18,326 47,261 ====== ====== ======= General Partner $ 1,299 2,036 5,251 ====== ====== ======= Limited partners $ 72,883 118,256 443,608 ====== ====== ======= Per limited partner unit $ 7.34 before cumulative effect 10.86 40.74 Cumulative effect per (.65) - - limited partner unit -------- -------- -------- -- -- ---- Per limited partner unit $ 6.69 10.86 40.74 ====== ====== ======= Pro forma amounts assuming change is applied retroactively (See Note 3): Net income before cumulative $ - 147,618 490,120 effect ====== ====== ======= Per limited partner unit $ - (10,889.0 units) 11.69 40.19 ====== ====== ======= Net income $ - 147,618 490,120 ====== ====== ======= Per limited partner unit $ - (10,889.0 units) 11.69 40.19 ====== ====== ======= The accompanying notes are an integral part of these financial statements. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Statement of Changes in Partners' Equity Years ended December 31, 2002, 2001 and 2000 General Limited Partners Partners Total -------- -------- ----- Balance at $ (485) 514,769 514,284 December 31, 1999 Net income 52,512 443,608 496,120 Distributions (40,664) (365,980 (406,644 ) ) -------- -------- -------- -- --- --- Balance at 11,363 592,397 603,760 December 31, 2000 Net income 20,362 118,256 138,618 Distributions (37,944) (341,499 (379,443 ) ) -------- -------- -------- -- --- --- Balance at (6,219) 369,154 362,935 December 31, 2001 Net income 12,987 72,883 85,870 (Restated) Distributions (6,219) (55,970) (62,189) -------- -------- -------- -- ---- --- Balance at December 31, 2002 (Restated) $ 549 386,067 386,616 ====== ======= ====== The accompanying notes are an integral part of these financial statements. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Statements of Cash Flows Years ended December 31, 2002, 2001 and 2000 2002 2001 2000 (Restate d) ----- ----- ----- Cash flows from operating activities: Cash received from oil and $ 728,561 989,012 1,087,47 gas sales 1 Cash paid to Managing General Partner for production expense, administrative fees and general and (647,869 (675,488 (598,462 administrative overhead ) ) ) Interest received 174 2,829 4,483 -------- -------- -------- ----- ----- ---- Net cash provided by 80,866 316,353 493,492 operating activities -------- -------- -------- ----- ----- ---- Cash flows used in investing activities: Additions to oil and gas (16,534) (16,694) (29,520) properties -------- -------- -------- ----- ----- ---- Cash flows used in financing activities: Distributions to partners (62,275) (379,128 (406,658 ) ) -------- -------- -------- ----- ----- ---- Net increase (decrease) in cash and cash equivalents 2,057 (79,469) 57,314 Beginning of period 13,190 92,659 35,345 -------- -------- -------- ----- ----- ---- End of period $ 15,247 13,190 92,659 ======= ======= ======= Reconciliation of net income to net cash provided by operating activities: Net income $ 85,870 138,618 496,120 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation, depletion and 37,000 65,000 29,000 amortization Cumulative effect of change 7,000 - - in accounting principle (Increase) decrease in (39,671) 119,206 (62,799) receivables (Decrease) increase in (9,333) (6,471) 31,171 payables -------- -------- -------- ----- ----- ----- Net cash provided by operating $ 80,866 316,353 493,492 activities ======= ======= ======= The accompanying notes are an integral part of these financial statements. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 1. Organization Southwest Oil & Gas Income Fund X-B, L.P. was organized under the laws of the state of Delaware on November 27, 1990 for the purpose of acquiring producing oil and gas properties and to produce and market crude oil and natural gas produced from such properties for a term of 50 years, unless terminated at an earlier date as provided for in the Partnership Agreement. The Partnership sells its oil and gas production to a variety of purchasers with the prices it receives being dependent upon the oil and gas economy. Southwest Royalties, Inc. serves as the Managing General Partner and H. H. Wommack, III, as the individual general partner. Revenues, costs and expenses are allocated as follows: Limited General Partners Partners -------- -------- Interest income on capital 100% - contributions Oil and gas sales 90% 10% All other revenues 90% 10% Organization and offering 100% - costs (1) Amortization or organization 100% - costs Property acquisition costs 100% - Gain/loss on property 90% 10% disposition Operating and administrative 90% 10% costs (2) Depreciation, depletion, and amortization of oil and gas properties 100% - All other costs 90% 10% (1) All organization costs in excess of 3% of initial capital contributions will be paid by the Managing General Partner and will be treated as a capital contribution. The Partnership paid the Managing General Partner an amount equal to 3% of initial capital contributions for such organization costs. (2) Administrative costs in any year, which exceed 2% of capital contributions shall be paid by the Managing General Partner and will be treated as a capital contribution. 2. Summary of Significant Accounting Policies Oil and Gas Properties Oil and gas properties are accounted for at cost under the full-cost method. Under this method, all productive and nonproductive costs incurred in connection with the acquisition, exploration and development of oil and gas reserves are capitalized. Gain or loss on the sale of oil and gas properties is not recognized unless significant oil and gas reserves are involved. Should the net capitalized costs exceed the estimated present value of oil and gas reserves, discounted at 10%, such excess costs would be charged to current expense. In applying the units-of-revenue method for the years ended December 31, 2001, 2000 and for the nine months ended September 30, 2002, we have not excluded royalty and net profit interest payments from gross revenues as all of our royalty and net profit interests have been purchased and capitalized to the depletion basis of our proved oil and gas properties. As of December 31, 2002, 2001 and 2000 the net capitalized costs did not exceed the estimated present value of oil and gas reserves. Estimates and Uncertainties The preparation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Partnerships depletion calculation and full-cost ceiling test for oil and gas properties uses oil and gas reserves estimates, which are inherently imprecise. Actual results could differ from those estimates. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 2. Summary of Significant Accounting Policies- continued Syndication Costs Syndication costs are accounted for as a reduction of partnership equity. Environmental Costs The Partnership is subject to extensive federal, state and local environmental laws and regulations. These laws, which are constantly changing, regulate the discharge of materials into the environment and may require the Partnership to remove or mitigate the environmental effects of the disposal or release of petroleum or chemical substances at various sites. Environmental expenditures are expensed or capitalized depending on their future economic benefit. Costs, which improve a property as compared with the condition of the property when originally constructed or acquired and costs, which prevent future environmental contamination are capitalized. Expenditures that relate to an existing condition caused by past operations and that have no future economic benefits are expensed. Liabilities for expenditures of a non-capital nature are recorded when environmental assessment and/or remediation is probable, and the costs can be reasonably estimated. Revenue Recognition We recognize oil and gas sales when delivery to the purchaser has occurred and title has transferred. This occurs when production has been delivered to a pipeline or transport vehicle. Gas Balancing The Partnership utilizes the sales method of accounting for gas- balancing arrangements. Under this method the Partnership recognizes sales revenue on all gas sold. As of December 31, 2002, 2001 and 2000, there were no significant amounts of imbalance in terms of units or value. Income Taxes No provision for income taxes is reflected in these financial statements, since the tax effects of the Partnership's income or loss are passed through to the individual partners. In accordance with the requirements of Statement of Financial Accounting Standards No. 109, "Accounting for Income Taxes, the Partnership's tax basis in its net oil and gas properties at December 31, 2002 and 2001 is $173,716 and $236,284, respectively, more than that shown on the accompanying Balance Sheets in accordance with generally accepted accounting principles. Cash and Cash Equivalents For purposes of the statement of cash flows, the Partnership considers all highly liquid debt instruments purchased with a maturity of three months or less to be cash equivalents. The Partnership maintains its cash at one financial institution. Number of per Limited Partner Units As of December 31, 2002, 2001 and 2000, there were 10,889 limited partner units outstanding held by 527 partners. Concentrations of Credit Risk The Partnership is subject to credit risk through trade receivables. Although a substantial portion of its debtors' ability to pay is dependent upon the oil and gas industry, credit risk is minimized due to a large customer base. All partnership revenues are received by the Managing General Partner and subsequently remitted to the partnership and all expenses are paid by the Managing General Partner and subsequently reimbursed by the partnership. Fair Value of Financial Instruments The carrying amount of cash and accounts receivable approximates fair value due to the short maturity of these instruments. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 2. Summary of Significant Accounting Policies- continued Net Income (loss) per limited partnership unit The net income (loss) per limited partnership unit is calculated by using the number of outstanding limited partnership units. Recent Accounting Pronouncements The FASB has issued Statement No. 143 "Accounting for Asset Retirement Obligations" which establishes requirements for the accounting of removal-type costs associated with asset retirements. The standard is effective for fiscal years beginning after June 15, 2002, with earlier application encouraged. The new standard requires the Partnership to recognize a liability for the present value of all legal obligations associated with the retirement of tangible long-lived assets and to capitalize an equal amount as a cost of the asset and allocate the additional cost over the estimated useful life of the asset. On January 1, 2003, the Partnership recorded additional costs, net of accumulated depreciation, depletion and amortization, of approximately $174,419, a long term liability of approximately $751,711 and a loss of approximately $577,292 for the cumulative effect on depreciation, depletion and amortization of the additional costs and accretion expense on the liability related to expected abandonment costs of its oil and natural gas producing properties. Depletion Policy In 2002, the Partnership changed methods of accounting for depletion of capitalized costs from the units-of-revenue method to the units-of- production method. (See Note 3) 3. Cumulative effect of a change in accounting principle In the fourth quarter of 2002, the Partnership changed methods of accounting for depletion of capitalized costs from the units-of- revenue method to the units-of-production method. The newly adopted accounting principle is preferable in the circumstances because the units-of-production method results in a better matching of the costs of oil and gas production against the related revenue received in periods of volatile prices for production as have been experienced in recent periods. Additionally, the units-of-production method is the predominant method used by full cost companies in the oil and gas industry, accordingly, the change improves the comparability of the Partnership's financial statements with its peer group. The Partnership adopted the units-of-production method through the recording of a cumulative effect of a change in accounting principle in the amount of $7,000 effective as of January 1, 2002. The Partnership's depletion for the year ended 2002 has been calculated using the units-of-production method and prior years have not been restated. The pro forma amounts for 2001 and 2000, which are presented on the face of the statements of operations, reflect the effect of retroactive application of the units-of-production method. The effect of the change on the year ended December 31, 2002 was to decrease income before cumulative effect of a change in accounting principle by $2,000 ($.18 per limited partner unit) and net income by $9,000 ($.83 per limited partner unit). See Note 10 for the effects of the change in depletion method on the individual quarters of 2002. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 4. Liquidity - Managing General Partner The Managing General Partner has a highly leveraged capital structure with approximately $124.0 million of principal due between December 31, 2002 and December 31, 2004. The Managing General Partner is constantly monitoring its cash position and its ability to meet its financial obligations as they become due, and in this effort, is continually exploring various strategies for addressing its current and future liquidity needs. The Managing General Partner regularly pursues and evaluates recapitalization strategies and acquisition opportunities (including opportunities to engage in mergers, consolidations or other business combinations) and at any given time may be in various stages of evaluating such opportunities. Based on current production, commodity prices and cash flow from operations, the Managing General Partner has adequate cash flow to fund debt service, developmental projects and day to day operations, but it is not sufficient to build a cash balance which would allow the Managing General Partner to meet its debt principal maturities scheduled for 2004. Therefore the Managing General Partner is currently seeking to renegotiate the terms of its obligations, including extending maturity dates, or seek new lenders or equity investors in order to satisfy its financial obligations maturing in 2004. There can be no assurance that the Managing General Partner's debt restructuring efforts will be successful. In the event these efforts are unsuccessful, the Managing General Partner would need to look to other alternatives to meet its debt obligations, including potentially selling its assets. There can be no assurance, however, that the sales of assets can be successfully accomplished on terms acceptable to the Managing General Partner. Please see the Partnership's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2003, which will be filed with the Commission on or before November 14, 2003, for updated information on the liquidity of the Managing General Partner. The liquidity of the Managing General Partner, however, does not have a material impact on the operations of the Partnership. The partnership agreement of the Partnership allows the limited partners to elect a successor managing general partner to continue Partnership operations. 5. Commitments and Contingent Liabilities The Managing General Partner has the right, but not the obligation, to purchase limited partnership units should an investor desire to sell. The value of the unit is determined by adding the sum of (1) current assets less liabilities and (2) the present value of the future net revenues attributable to proved reserves and by discounting the future net revenues at a rate not in excess of the prime rate charged by NationsBank, N.A. of Midland, Texas plus one percent (1%), which value shall be further reduced by a risk factor discount of no more than one- third (1/3) to be determined by the Managing General Partner in its sole and absolute discretion. Southwest, as Managing General Partner, evaluated several liquidity alternatives for the partnerships in 2001 and 2002. During 2002, Southwest specifically pursued the possible roll-up and merger of twenty-one (21) partnerships with the general partner. Because of the complexities and conflicts of interest in such a transaction, the Managing General Partner did not make a formal repurchase offer in 2002 but has responded to limited partners desiring to sell their units in the partnerships on an "as requested" basis. Southwest anticipates that it will not make a formal repurchase offer during 2003 because the merger is still being contemplated and Southwest's Registration Statement of Form S-4 relating to the merger is still in the review process with the Securities and Exchange Commission. Repurchases by Southwest, however, will continue to be made on an "as requested" basis. The Partnership is subject to various federal, state and local environmental laws and regulations, which establish standards and requirements for protection of the environment. The Partnership cannot predict the future impact of such standards and requirements, which are subject to change and can have retroactive effectiveness. The Partnership continues to monitor the status of these laws and regulations. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 5. Commitments and Contingent Liabilities - continued As of December 31, 2002, the Partnership has not been fined, cited or notified of any environmental violations and management is not aware of any unasserted violations, which would have a material adverse effect upon capital expenditures, earnings or the competitive position in the oil and gas industry. However, the Managing General Partner does recognize by the very nature of its business, material costs could be incurred in the near term to bring the Partnership into total compliance. The amount of such future expenditures is not reliably determinable due to several factors, including the unknown magnitude of possible contaminations, the unknown timing and extent of the corrective actions which may be required, the determination of the Partnership's liability in proportion to other responsible parties and the extent to which such expenditures are recoverable from insurance or indemnifications from prior owners of Partnership's properties. 6. Related Party Transactions A significant portion of the oil and gas properties in which the Partnership has an interest are operated by and purchased from the Managing General Partner. As provided for in the operating agreement for each respective oil and gas property in which the Partnership has an interest, the operator is paid an amount for administrative overhead attributable to operating such properties, with such amounts to Southwest Royalties, Inc. as operator approximating $145,200, $164,900 and $158,900 for the years ended December 31, 2002, 2001 and 2000, respectively. The amounts for administrative overhead attributable to operating the partnership properties have been deducted from gross oil and gas revenues in the determination of net profit interest. In addition, the Managing General Partner and certain officers and employees may have an interest in some of the properties that the Partnership also participates. Certain subsidiaries or affiliates of the Managing General Partner perform various oilfield services for properties in which the Partnership owns an interest. Such services aggregated approximately $13,400, $6,300 and $7,600 for the years ended December 31, 2002, 2001 and 2000, respectively. The amounts for oilfield services performed for the partnership by affiliates of the Managing General Partner have been deducted from gross oil and gas revenues in the determination of net profit interest. Southwest Royalties, Inc., the Managing General Partner, was paid $72,000 during 2002, 2001 and 2000, as an administrative fee for reimbursement of indirect general and administrative overhead expenses. The administrative fees are included in general and administrative expense on the statement of operations. Receivables from Southwest Royalties, Inc., the Managing General Partner, of approximately $88,800 and $39,800 are from oil and gas production, net of lease operating costs and production taxes, as of December 31, 2002 and 2001, respectively. 7. Major Customers No material portion of the Partnership's business is dependent on a single purchaser, or a very few purchasers, where the loss of one would have a material adverse impact on the Partnership. Three purchasers accounted for 77% of the Partnership's total oil and gas production during 2002: Teppco Crude Oil LLC for 44%, Plains Marketing LP for 21% and Exxon Company USA for 12%. Contracts for 2002 with these major purchasers cover month-to-month contracts. Prices received from these major purchasers ranged from a low of $20.19 per Bbl to a high of $22.99 per Bbl. Three purchasers accounted for 71% of the Partnership's total oil and gas production during 2001: Teppco Crude Oil LLC for 40%, Plains Marketing LP for 21% and Raptor Resources Inc. for 10%. Contracts for 2001 with these major purchasers cover month-to-month contracts. Prices received from these major purchasers ranged from a low of $23.19 per Bbl to a high of $26.85 per Bbl and $3.97 per mcf. Three purchasers accounted for 79% of the Partnership's total oil and gas production during 2000: Teppco Crude Oil LLC for 47%, Plains Marketing LP for 20% and Mobil Corporation for 12%. Contracts for 2000 with these major purchasers cover month-to-month contracts. Prices received from these major purchasers ranged from a low of $26.38 per Bbl to a high of $28.50 per Bbl. All purchasers of the Partnership's oil and gas production are unrelated third parties. In the event either of these purchasers were to discontinue purchasing the Partnership's production, the Managing General Partner believes that a substitute purchaser or purchasers could be located without undue delay. No other purchaser accounted for an amount equal to or greater than 10% of the Partnership's sales of oil and gas production. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 8. Estimated Oil and Gas Reserves (unaudited) The Partnership's interest in proved oil and gas reserves is as follows: Oil Gas (bbls) (mcf) -------- -------- ----- ----- Total Proved - January 1, 2000 339,000 460,000 Revisions of estimates in 6,000 221,000 place Production (34,000) (51,000) -------- -------- -- --- December 31, 2000 311,000 630,000 Revisions of estimates in (121,000 (243,000 place ) ) Production (31,000) (52,000) -------- -------- -- --- December 31, 2001 159,000 335,000 Revisions of estimates in 71,000 61,000 place Production (28,000) (45,000) -------- -------- -- --- December 31, 2002 202,000 351,000 ====== ====== Proved developed reserves - December 31, 2000 308,000 576,000 ====== ====== December 31, 2001 156,000 326,000 ====== ====== December 31, 2002 171,000 334,000 ====== ====== All of the Partnership's reserves are located within the continental United States. *Ryder Scott Company, L.P. prepared the reserve and present value data for the Partnership's existing properties as of January 1, 2003. The reserve estimates were made in accordance with guidelines established by the Securities and Exchange Commission pursuant to Rule 4-10(a) of Regulation S-X. Such guidelines require oil and gas reserve reports be prepared under existing economic and operating conditions with no provisions for price and cost escalation except by contractual arrangements. Oil price adjustments were made in the individual evaluations to reflect oil quality, gathering and transportation costs. The results of the reserve report as of January 1, 2003 are an average price of $28.99 per barrel. Gas price adjustments were made in the individual evaluations to reflect BTU content, gathering and transportation costs and gas processing and shrinkage. The results of the reserve report as of January 1, 2003 are an average price of $4.11 per Mcf. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 8. Estimated Oil & Gas Reserves (unaudited) - continued The evaluation of oil and gas properties is not an exact science and inevitably involves a significant degree of uncertainty, particularly with respect to the quantity of oil or gas that any given property is capable of producing. Estimates of oil and gas reserves are based on available geological and engineering data, the extent and quality of which may vary in each case and, in certain instances, may prove to be inaccurate. Consequently, properties may be depleted more rapidly than the geological and engineering data have indicated. Unanticipated depletion, if it occurs, will result in lower reserves than previously estimated; thus an ultimately lower return for the Partnership. Basic changes in past reserve estimates occur annually. As new data is gathered during the subsequent year, the engineer must revise his earlier estimates. A year of new information, which is pertinent to the estimation of future recoverable volumes, is available during the subsequent year evaluation. In applying industry standards and procedures, the new data may cause the previous estimates to be revised. This revision may increase or decrease the earlier estimated volumes. Pertinent information gathered during the year may include actual production and decline rates, production from offset wells drilled to the same geologic formation, increased or decreased water production, workovers, and changes in lifting costs, among others. Accordingly, reserve estimates are often different from the quantities of oil and gas that are ultimately recovered. The Partnership has reserves, which are classified as proved developed and proved undeveloped. All of the proved reserves are included in the engineering reports, which evaluate the Partnership's present reserves. Because the Partnership does not engage in drilling activities, the development of proved undeveloped reserves is conducted pursuant to farm-out arrangements with the Managing General Partner or unrelated third parties. Generally, the Partnership retains a carried interest such as an overriding royalty interest under the terms of a farm-out. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 8. Estimated Oil & Gas Reserves (unaudited) - continued The standardized measure of discounted future net cash flows relating to proved oil and gas reserves at December 31, 2002, 2001 and 2000 is presented below: 2002 2001 2000 ---- ---- ---- Future cash inflows $ 7,278,00 3,614,00 14,086,0 0 0 00 Production and 3,980,00 2,137,00 6,718,00 development costs 0 0 0 -------- -------- -------- ---- ---- ----- Future net cash flows 3,298,00 1,477,00 7,368,00 0 0 0 10% annual discount for estimated timing of cash flows 1,290,00 670,000 3,584,00 0 0 -------- -------- -------- ---- ---- ---- Standardized measure of discounted future net cash flows $ 2,008,00 807,000 3,784,00 0 0 ======= ======= ======= The principal sources of change in the standardized measure of discounted future net cash flows for the years ended December 31, 2002, 2001 and 2000 are as follows: 2002 2001 2000 ---- ---- ---- Sales of oil and gas produced, net of production $ (208,000 (279,000 (597,000 costs ) ) ) Changes in prices and 650,000 (2,457,0 1,833,00 production costs 00) 0 Changes of production rates (timing) and others 52,000 (12,000) (150,000 ) Revisions of previous quantities estimates 626,000 (607,000 389,000 ) Accretion of discount 81,000 378,000 210,000 Discounted future net cash flows - Beginning of year 807,000 3,784,00 2,099,00 0 0 -------- -------- -------- ---- ---- ---- End of year $ 2,008,00 807,000 3,784,00 0 0 ======= ======= ======= Future net cash flows were computed using year-end prices and costs that related to existing proved oil and gas reserves in which the Partnership has mineral interests. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 9. December 31, 2002 Restatement During 2002, the Partnership changed its method of providing for depletion from the units-of-revenue method to the units-of-production method as described in Note 3. Subsequent to the issuance of the Partnership's Annual Report on Form 10-K for the year ended December 31, 2002, the Partnership determined that the above change in accounting method should have been adopted by the Partnership as a cumulative effect of a change in accounting principle. The Partnership had previously applied the change in the method of providing for depletion prospectively as of October 1, 2002. This change in the method used to implement the Partnership's change in the manner in which it determines depletion resulted in a decrease in the Partnership's previously reported net oil and gas properties of $9,000 from $291,825 to $282,825 as of December 31, 2002 and did not effect the Partnership's 2002 cash flows from operations, investing or financing activities. The change had the following effects on the Statement of Operations for the year ended December 31, 2002. (Periods prior to 2002 were not affected by the change). Restated Previously Reported Depreciation, depletion and $ 37,000 35,000 amortization Income before cumulative effect 92,870 94,870 Cumulative effect of change in (7,000) - accounting principle Net income 85,870 94,870 Net income allocated to: Managing General Partner 11,688 11,688 General partner 1,299 1,299 Limited partners 72,883 81,883 Income per limited partner unit before cumulative effect 7.34 7.52 Cumulative effect per (.65) - limited partner unit Net income per limited 6.69 7.52 partner unit Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 10. Selected Quarterly Financial Results - (unaudited) As discussed in Note 3, in 2002 the Partnership changed methods of accounting for depletion of capitalized costs from the units-of- revenue method to the units-of-production method. The 2002 quarterly financial results presented below have been restated to reflect the change in depletion method effective as of January 1, 2002. See Notes 3 and 9 for a detailed discussion of the change in depletion method. Quarter -------------------------------------- -------------------------------------- - First Second Third Fourth ------ -------- ------- -------- --- - 2002: Total revenues $ 157,219 188,892 212,879 209,416 Total expenses as 161,443 163,421 176,503 172,169 originally reported Effect of change in 3,000 - - (1,000) depletion method Total expenses restated 164,443 163,421 176,503 171,169 -------- -------- -------- -------- ---- ---- ---- ---- Net income (loss) as (4,224) 25,471 36,376 37,247 originally reported Income (loss) before cumulative effect of a change in accounting (7,224) 25,471 36,376 38,247 principle Cumulative effect on prior years (to December 31, 2001) of changing to a different depletion (7,000) - - - method -------- -------- -------- -------- ---- ---- ---- ---- Net income (loss) as $ (14,224) 25,471 36,376 38,247 restated ======= ======= ======= ======= Per limited partner unit amounts: Net income (loss) $ (.41) originally reported 2.01 2.92 3.00 Effect of change in (.28) - - .10 depletion method -------- -------- -------- -------- ---- ---- ---- ---- Income (loss) before cumulative effect of a change in accounting (.69) principle 2.01 2.92 3.10 Cumulative effect on prior years (to December 31, 2001) of changing to a different depletion (.65) - - - method -------- -------- -------- -------- ---- ---- ---- ---- Net income (loss) as $ (1.34) restated 2.01 2.92 3.10 ======= ======= ======= ======= 2001: Total revenues $ 278,405 250,194 197,207 146,829 Total expenses 167,331 173,982 194,508 198,196 Net income (loss) 111,074 76,212 2,699 (51,367) Net income (loss) per limited partners unit 9.09 6.17 (.02) (4.38) Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure None Part III Item 10. Directors and Executive Officers of the Registrant Management of the Partnership is provided by Southwest Royalties, Inc., as Managing General Partner. The names, ages, offices, positions and length of service of the directors and executive officers of Southwest Royalties, Inc. are set forth below. Each director and executive officer of the Managing General Partner serves for a term of one year. Name Age Position - ----------------------- --- ----------------------------- - ---------------------- -- ----------------------------- H. H. Wommack, III 47 Chairman of the Board, President, Director and Chief Executive Officer James N. Chapman(1) 40 Director William P. Nicoletti(2) 57 Director Joseph J. Radecki, Jr. 44 Director (2) Richard D. Rinehart(1) 67 Director John M. White(2) 46 Director Herbert C. Williamson, 54 Director III(1) Bill E. Coggin 48 Executive Vice President and Chief Financial Officer J. Steven Person 44 Vice President, Marketing (1) Member of the Compensation Committee (2) Member of the Audit Committee H. H. Wommack, III has served as Chairman of the Board, President, Chief Executive Officer and a director since Southwest's founding in 1983. Since 1997 Mr. Wommack has served as President, Chief Executive Officer and Chairman of SRH, Southwest's former parent and current holder of 10% of its voting share capital. SRH holds an equity investment in Southwest and in Basic Energy Services. Since 1997 Mr. Wommack has served as chairman of the board of directors of Midland Red Oak Realty, Inc. Midland Red Oak Realty owns and manages commercial real estate properties, including shopping centers and office buildings, in secondary real estate markets in the Southwestern United States. From 1997 until December 2000, Mr. Wommack served as chairman of the board of directors of Basic Energy Services, Inc. and since December 2000 has continued to serve on Basic's board of directors. Basic provides certain well services for oil and gas companies. Prior to Southwest's formation, Mr. Wommack was a self-employed independent oil and gas producer engaged in the purchase and sale of royalty and working interests in oil and gas leases and the drilling of wells. Mr. Wommack graduated from the University of North Carolina at Chapel Hill and received his law degree from the University of Texas. James N. Chapman has served as a director since April 19,2002. Mr. Chapman has been involved in the investment banking industry for 18 years. Since January 2002 he has acted as a capital markets and strategic planning consultant with private and public companies across a range of industries, including metals, mining, manufacturing, aerospace, airline, service and healthcare. Prior to establishing an independent consulting practice, from 1997 to 2002 Mr. Chapman worked for The Renco Group, Inc., a multi-billion private corporation in New York, for which Mr. Chapman developed and implemented financing and merger and acquisitions strategies for Renco's diverse portfolio of companies. From 1990 to 1997, Mr. Chapman was a founding principal of Fieldstone Private Capital Group, a capital markets advisory firm. From 1985 to 1990, Mr. Chapman worked for Bankers Trust Company, most recently in the BT Securities Capital Markets area. Mr. Chapman received an MBA degree with distinction from the Amos Tuck School at Dartmouth College and was elected an Edward Tuck Scholar. He received his BA degree with distinction magna cum laude, at Dartmouth College, was elected to Phi Beta Kappa and was a Rufus Choate Scholar. William P. Nicoletti has served as a director since April 19, 2002. Mr. Nicoletti is Managing Director of Nicoletti & Company Inc., an investment banking and financial advisory firm he founded in 1991. He was previously a senior officer and head of the Energy Investment Banking Groups of E. F. Hutton & Company Inc. and Paine Webber, Incorporated. From March 1998 until June 1990 he was a managing director and co-head of Energy Investment Banking at McDonald Investments Inc. Mr. Nicoletti has been Chairman of the board of directors of Russell-Stanley Holdings, Inc., a manufacturer and marketer of steel and plastic industrial containers since November 2001. He is a director of Mark WestEnergy Partners, L.P., a business engaged in the gathering and processing of natural gas and the fractionation and storage of natural gas liquids. Mr. Nicoletti is also a Director and Chairman of the Audit Committee of Star Gas Partners, L.P., the nation's largest retail distributor of home heating oil and a major retail distributor of propane gas. Mr. Nicoletti is a graduate of Seton Hall University and received an MBA degree from Columbia University Graduate School of Business. Joseph J. Radecki, Jr. has served as a director since April 19, 2002. Mr. Radecki is currently a Managing Director in the Leveraged Finance Group of CIBC World Markets where he is principally responsible for the firm's financial restructuring and distressed situation advisory practice. Prior to joining CIBC World Markets in 1998, Mr. Radecki was an Executive Vice President and Director of the Financial Restructuring Group of Jefferies & Company, Inc. beginning in 1990. From 1983 until 1990, Mr. Radecki was First Vice President in the International Capital Markets Group at Drexel Burnham Lambert, Inc., where he specialized in financial restructurings and recapitalizations. Over the past fourteen years, Mr. Radecki has been integrally involved in over 120 transactions totaling nearly $50 billion in recapitalized securities. Mr. Radeki currently serves as a Director of Wherehouse Entertainment, Inc., a music and video specialty retailer, and RBX Corporation, a manufacturer of rubber and plastic foam and other polymer products. He has previously served as Chairman of the Board of American Rice, Inc., an international rice miller and marketer, as a member of the Board of Directors of Service America Corporation, a national food service management firm, Bucyrus International, Inc., a mining equipment manufacturer, and ECO-Net, a non-profit engineering related network firm. Mr. Radecki graduated magna cum laude in 1980 from Georgetown University with a B.A. in Government. Richard D. Rinehart has served as a director since April 19, 2002. Mr. Rinehart is a founding principal of PetroCap, Inc. and president of Kestrel Resources, Inc. PetroCap, Inc. provides investment and merchant banking services to a variety of clients active in the oil and gas industry. Kestrel Resources, Inc. is a privately owned oil and gas operating company. He served as Director of Coopers & Lybrand's Energy Systems and Services Division prior to the founding of Kestrel Resources, Inc. in 1992. Prior to joining Coopers & Lybrand, he was chief executive officer/founder of Dawn Information Resources, Inc., formed in 1986 and acquired by Coopers & Lybrand in early 1991. Mr. Rinehart served as CEO of Terrapet Energy Corporation during the period 1982 through 1986. Prior to the formation of Terrapet in 1982, he was employed as President of the Terrapet Division of E.I. DuPont de Nemours and Company. Before its acquisition by DuPont, he served as CEO and President of Terrapet Corp., a privately owned E & P company. Before the formation of Terrapet Corp. in 1972, he was manager of supplementary recovery methods and senior evaluation engineer with H. J. Gruy and Associates, Inc., Dallas, Texas. John M. White has served as a director since April 19, 2002, Mr. White is currently an oil and gas analyst with BMO Nesbitt Burns, responsible for Fixed Income research on oil, gas and energy companies. Prior to joining BMO Nesbitt Burns in 1998, Mr. White was responsible for Fixed Income research on the oil and gas industry at John S. Herold, Inc., an independent oil and gas research and consulting firm, beginning in July 1996. Mr. White's experience also includes managing a portfolio of oil and gas loans for The Bank of Nova Scotia, which included independent exploration and production companies, oil service companies, gas pipelines, gas processors and refiners from 1990 until July 1996. From 1983 to 1990, Mr. White was with BP Exploration, where he worked primarily in exploration and production. Herbert C. Williamson, III has served as a director since April 19, 2002. At present, Mr. Williamson is self-employed as a consultant. From March 2001 to March 2002 Mr. Williamson served as an investment banker with Petrie Parkman & Co. From April 1999 to March 2001 Mr. Williamson served as chief financial officer and from August 1999 to March 2001 as a director of Merlon Petroleum Company, a private oil and gas company involved in exploration and production in Egypt. Mr. Williamson served as executive vice president, chief financial officer and director of Seven Seas Petroleum, Inc., a publicly traded oil and gas exploration company, from March 1998 to April 1999. From 1995 through April 1998, he served as director in the Investment Banking Department of Credit Suisse First Boston. Mr. Williamson served as vice chairman and executive vice president of Parker and Parsley Petroleum Company, a publicly traded oil and gas exploration company (now Pioneer Natural Resources Company) from 1985 through 1995. Bill E. Coggin has served as Vice President and Chief Financial Officer since joining the Managing General Partner in 1985. Previously, Mr. Coggin was Controller for Rod Ric Corporation, an oil and gas drilling company, and for C.F. Lawrence & Associates, a large independent oil and gas operator. Mr. Coggin received a B.S. in Education and a B.A. in Accounting from Angelo State University. J. Steven Person has served as Vice President, Marketing since joining the Managing General Partner in 1989. Mr. Person began in the investment industry with Dean Witter in 1983. Prior to joining the Managing General Partner, Mr. Person was a senior wholesaler with Capital Realty, Inc. While at Capital Realty, he was involved in the syndication of mortgage based securities through the major brokerage houses. Mr. Person received a B.B.A. degree from Baylor University and an M.B.A. from Houston Baptist University. Key Employees Jon P. Tate, age 45, has served as Vice President, Land and Assistant Secretary of the Managing General Partner since 1989. From 1981 to 1989, Mr. Tate was employed by C.F. Lawrence & Associates, Inc., an independent oil and gas company, as land manager. Mr. Tate is a member of the Permian Basin Landman's Association. R. Douglas Keathley, age 47, has served as Vice President, Operations of the Managing General Partner since 1992. Before joining us, Mr. Keathley worked as a senior drilling engineer for ARCO Oil and Gas Company and in similar capacities for Reading & Bates Petroleum Co. and Tenneco Oil Co. In certain instances, the Managing General Partner will engage professional petroleum consultants and other independent contractors, including engineers and geologists in connection with property acquisitions, geological and geophysical analysis, and reservoir engineering. The Managing General Partner believes that, in addition to its own "in-house" staff, the utilization of such consultants and independent contractors in specific instances and on an "as-needed" basis allows for greater flexibility and greater opportunity to perform its oil and gas activities more economically and effectively. Item 11. Executive Compensation The Partnership does not employ any directors, executive officers or employees. The Managing General Partner receives an administrative fee for the management of the Partnership The Managing General Partner received, as an administrative fee, $72,000 during 2002, 2001 and 2000. The executive officers of the Managing General Partner do not receive any form of compensation, from the Partnership; instead, their compensation is paid solely by Southwest. The executive officers, however, may occasionally perform administrative duties for the Partnership but receive no additional compensation for this work. Item 12. Security Ownership of Certain Beneficial Owners and Management There are no limited partners who own of record, or are known by the Managing General Partner to beneficially own, more than five percent of the Partnership's limited partnership interests. The Managing General Partner owns a nine percent interest as a general partner. Through prior purchases, the Managing General Partner also owns 204 limited partner units, or a 1.7% limited partner interest. The Managing General Partner total percentage interest ownership in the Partnership is 10.7%. No officer or director of the Managing General Partner owns Units in the Partnership. H. H. Wommack, III, as the individual general partner of the Partnership, owns a one percent interest in the Partnership as a general partner. The officers and directors of the Managing General Partner are considered beneficial owners of the limited partner units acquired by the Managing General Partner by virtue of their status as such. Beneficial ownership is determined in accordance with the rules of the Securities and Exchange Commission and includes voting or investment power with respect to the limited partner units. To our knowledge, except under applicable community property laws or as otherwise indicated, the persons named in the table have sole voting and sole investment control with regard to all limited partner units beneficially owned. We are presenting ownership information as of March 1, 2003. A list of beneficial owners of limited partner units, acquired by the Managing General Partner, is as follows: Amount and Nature of Percen t Name and Address of Beneficial of Title of Class Beneficial Owner Ownership Class - ------------------- --------------------- ---------- ------ -------------- -------------- ------ ----- Limited Partnership Southwest Royalties, Directly 1.7% Interest Inc. Owns Managing General 204 Units Partner 407 N. Big Spring Street Midland, TX 79701 Limited Partnership H. H. Wommack, III Indirectly 1.7% Interest Owns Chairman of the 204 Units Board, President, and CEO of Southwest Royalties, Inc., the Managing General Partner 407 N. Big Spring Street Midland, TX 79701 There are no arrangements known to the Managing General Partner, which may at a subsequent date result in a change of control of the Partnership. Item 13. Certain Relationships and Related Transactions In 2002, the Managing General Partner received $72,000 as an administrative fee. This amount is part of the general and administrative expenses incurred by the Partnership. In some instances the Managing General Partner and certain officers and employees may be working interest owners in an oil and gas property in which the Partnership also has a working interest. Certain properties in which the Partnership has an interest are operated by the Managing General Partner, who was paid approximately $145,200 for administrative overhead attributable to operating such properties during 2002. Certain subsidiaries or affiliates of the Managing General Partner perform various oilfield services for properties in which the Partnership owns an interest. Such services aggregated approximately $13,400 for the year ended December 31, 2002. The terms of the above transactions are similar to ones, which would have been obtained through arm's length negotiations with unaffiliated third parties. Item 14. Controls and Procedures (a) Evaluation of Disclosure Controls and Procedures. The chief executive officer and chief financial officer of the Partnership's managing general partner have evaluated the effectiveness of the design and operation of the Partnership's disclosure controls and procedures (as defined in Exchange Act Rule 13a-14(c)) as of a date within 90 days of the filing date of this annual report. Based on that evaluation, the chief executive officer and chief financial officer have concluded that the Partnership's disclosure controls and procedures are effective to ensure that material information relating to the Partnership is made known to such officers by others within these entities, particularly during the period this annual report was prepared, in order to allow timely decisions regarding required disclosure. (b) Changes in Internal Controls. There have not been any significant changes in the Partnership's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation. Part IV Item 15. Exhibits, Financial Statement Schedules and Reports on Form 8-K (a)(1) Financial Statements: Included in Part II of this report -- Independent Auditors Report Balance Sheets Statements of Operations Statement of Changes in Partners' Equity Statements of Cash Flows Notes to Financial Statements (2) Schedules required by Article 12 of Regulation S- X are either omitted because they are not applicable or because the required information is shown in the financial statements or the notes thereto. (3) Exhibits: 4 (a) Certificate of Limited Partnership of Southwest Oil & Gas Income Fund X- B, L.P., dated November 27, 1990. (Incorporated by reference from Partnership's Form 10-K for the fiscal year ended December 31, 1990.) (b) Agreement of Limited Partnership of Southwest Oil & Gas Income Fund X- B, L.P. dated November 27, 1990. (Incorporated by reference from Partnership's Form 10-K for the fiscal year ended December 31, 1991.) 18.1 Letter re Change in Accounting Principles 99.1 Certification pursuant to 18 U.S.C. Section 1350 99.2 Certification pursuant to 18 U.S.C. Section 1350 (b) Reports on Form 8-K There were no reports filed on Form 8-K during the quarter ended December 31, 2002. Signatures Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Partnership has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Southwest Oil & Gas Income Fund X-B, L.P., a Delaware limited partnership By: Southwest Royalties, Inc., Managing General Partner By: /s/ H. H. Wommack, III ------------------------------------------ - ----- H. H. Wommack, III, President Date: November 10, 2003 POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints H.H. Wommack, III and Bill E. Coggin, and each of them severally, his true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for him and in his name, place and stead, in any and all capacities, to sign any and all amendment to this Report, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorney-in-fact and agent full power and authority to do and perform each and every act and thing requisite and necessary to be done as fully to all intents and purposes as he might or could do in person, hereby ratifying and confirming that all that said attorney-in-fact and agent, or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof. In accordance with the Exchange Act, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated. Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Partnership and in the capacities and on the dates indicated. /s/ H. H. Wommack, III /s/ Bill E. Coggin - --------------------------- ------------------------ - -------------------- ----------------------- H. H. Wommack, III, Bill E. Coggin, Chairman of the Board, Executive Vice President President, Director and and Chief Financial Chief Executive Officer Officer Date: November 6, 2003 Date: November 6, 2003 /s/ William P. Nicoletti /s/ James N. Chapman - --------------------------- ------------------------ - -------------------- ----------------------- William P. Nicoletti, James N. Chapman, Director Director Date: November 10, 2003 Date: November 6, 2003 /s/ Richard D. Rinehart /s/ Joseph J. Radecki, Jr. - --------------------------- ------------------------ - -------------------- ----------------------- Richard D. Rinehart, Joseph J. Radecki, Jr., Director Director Date: November 7, 2003 Date: November 4, 2003 /s/ Herbert C. Williamson, III - --------------------------- ------------------------ - -------------------- ----------------------- Herbert C. Williamson, III, John M. White, Director Director Date: November 7, 2003 Date: CERTIFICATIONS I, H.H. Wommack, III, certify that: 1. I have reviewed this annual report on Form 10-K/A of Southwest Oil & Gas Income Fund X-B, L.P.; 2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report; 3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report; 4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d- 14) for the registrant and we have: a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared; b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this annual report (the "Evaluation Date"); and c) presented in this annual report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date; 5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions): a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and 6. The registrant's other certifying officers and I have indicated in this annual report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. Date: November 10, 2003 /s/ H.H. Wommack, III H. H. Wommack, III Chairman, President, Director and Chief Executive Officer of Southwest Royalties, Inc., the Managing General Partner of Southwest Oil & Gas Income Fund X-B, L.P. CERTIFICATIONS I, Bill E. Coggin, certify that: 1. I have reviewed this annual report on Form 10-K/A of Southwest Oil & Gas Income Fund X-B, L.P.; 2. Based on my knowledge, this annual report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this annual report; 3. Based on my knowledge, the financial statements, and other financial information included in this annual report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this annual report; 4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d- 14) for the registrant and we have: a) designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this annual report is being prepared; b) evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this annual report (the "Evaluation Date"); and c) presented in this annual report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date; 5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions): a) all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and 6. The registrant's other certifying officers and I have indicated in this annual report whether or not there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses. Date: November 10, 2003 /s/ Bill E. Coggin Bill E. Coggin Executive Vice President and Chief Financial Officer of Southwest Royalties, Inc., the Managing General Partner of Southwest Oil & Gas Income Fund X-B, L.P. Exhibit Index Item No. Description Page No. Exhibit 18.1 Letter re Change in Accounting Principles 48 Exhibit 99.1 Certification pursuant to 18 U.S.C. 49 Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 Exhibit 99.2 Certification pursuant to 18 U.S.C. 50 Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 EXHIBIT 18.1 June 4, 2003 Southwest Royalties, Inc. (As Managing General Partner of the Partnerships) Midland, Texas Ladies and Gentlemen: We have audited the balance sheets of the Southwest Royalties, Inc. public partnerships (see attached listing) (the "Partnerships") as of December 31, 2002 and 2001, and the related statements of operations, statements of changes in partners' equity, and cash flows for each of the years in the three-year period ended December 31, 2002, and have reported thereon under date of March 14, 2003. The aforementioned financial statements and our audit report thereon are included in each of the individual Partnership's annual reports on Form 10-K/A for the year ended December 31, 2002. As stated in Note 2 to those financial statements, the Partnerships changed their method of accounting for amortization of capitalized costs from the units-of-revenue method to the units-of-production method, and that the newly adopted accounting principle is preferable in the circumstances because the units-of- production method results in a better matching of the costs of oil and gas production against the related revenue received in periods of volatile prices for production as have been experienced in recent periods. Additionally, the units-of- production method is the predominant method used by full cost companies in the oil and gas industry, accordingly, the change improves the comparability of the Partnerships' financial statements with its peer group. In accordance with your request, we have reviewed and discussed with Partnership officials the circumstances and business judgment and planning upon which the decision to make this change in the method of accounting was based. With regard to the aforementioned accounting change, authoritative criteria have not been established for evaluating the preferability of one acceptable method of accounting over another acceptable method. However, for purposes of the Partnership's compliance with the requirements of the Securities and Exchange Commission, we are furnishing this letter. Based on our review and discussion, with reliance on management's business judgment and planning, we concur that the newly adopted method of accounting is preferable in the Partnerships' circumstances. Very truly yours, KPMG LLP CERTIFICATION PURSUANT TO 19 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Southwest Oil & Gas Income Fund X-B, Limited Partnership (the "Company") on Form 10- K/A for the period ending December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, H.H. Wommack, III, Chief Executive Officer of the Managing General Partner of the Company, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to 906 of the Sarbanes-Oxley Act of 2002, that: (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company. Date: November 10, 2003 /s/ H.H. Wommack, III H. H. Wommack, III Chairman, President, Director and Chief Executive Officer of Southwest Royalties, Inc., the Managing General Partner of Southwest Oil & Gas Income Fund X-B, L.P. CERTIFICATION PURSUANT TO 19 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Southwest Oil and Gas Income Fund X-B, Limited Partnership (the "Company") on Form 10- K/A for the period ending December 31, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Bill E. Coggin, Chief Financial Officer of the Managing General Partner of the Company, certify, pursuant to 18 U.S.C. 1350, as adopted pursuant to 906 of the Sarbanes-Oxley Act of 2002, that: (3) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (4) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operation of the Company. Date: November 10, 2003 /s/ Bill E. Coggin Bill E. Coggin Executive Vice President and Chief Financial Officer of Southwest Royalties, Inc., the Managing General Partner of Southwest Oil & Gas Income Fund X-B, L.P.