FORM 10-K 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 [Fee Required] For the fiscal year ended December 31, 2000 OR [ ] Transition report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 [No Fee Required] 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 (915) 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 x No Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (229.405 of this chapter) 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 41. There is no exhibit index. Table of Contents Item Page Part I 1. Business 3 2. Properties 7 3. Legal Proceedings 9 4. Submission of Matters to a Vote of Security Holders 9 Part II 5. Market for Registrant's Common Equity and Related Stockholder Matters 10 6. Selected Financial Data 11 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 12 8. Financial Statements and Supplementary Data 19 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure 35 Part III 10. Directors and Executive Officers of the Registrant 36 11. Executive Compensation 37 12. Security Ownership of Certain Beneficial Owners and Management 37 13. Certain Relationships and Related Transactions 39 Part IV 14. Exhibits, Financial Statement Schedules, and Reports on Form 8-K 40 Signatures 41 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 92 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, a stockholder, director, President and Treasurer of the Managing General Partner, is also a general partner. The Partnership has no employees. Principal Products, Marketing and Distribution The Partnership has acquired and holds working interests in oil and gas properties located in Arkansas, Louisiana, 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. The year 2000 was a record year for crude oil prices. The world energy markets witnessed a continuation of the 1999 recovery seeing prices in the U.S. peak at $37 per barrel in September. Increasing demand and depleting inventories appeared to be the motivators in crude's dramatic rise. At the beginning of 2000, U.S. crude oil inventories were approximately 16% lower than at the beginning of 1999 and summer vacationers made it through a travel season that saw gasoline prices top $2 per gallon in some U.S. markets. The lack of crude oil inventory in the U.S. was also magnified by the colder than normal winter that much of the country experienced. However, several production increases from OPEC coupled with President Clinton's release of 30 million barrels of oil from the U.S. Strategic Petroleum Reserve in September contributed to the slow in prices toward the end of the year. After averaging $30 per barrel for the year and over $32 from August through November, oil prices closed out the year 2000 at $26.80 per barrel. Tighter supplies, rising demand, and the return of more seasonal summer and winter weather catapulted spot gas prices in 2000 to the highest levels since the market was deregulated in the mid-1980's. Average monthly spot prices rose an astounding 72.9% over 1999 levels to average $3.77/MMBTU. The climb in prices was fairly steady throughout the year, with the first- quarter spot prices averaging $2.44/MMBtu. After the winter season ended with a huge storage deficit of 306 BCF, a combination of factors contributed further to the upward trend in spot prices. As the summer temperatures heated up and the rate of storage injections remained sluggish, competition for gas supplies became fierce between power generators and gas utilities attempting to refill storage. Spot prices really took off in the fourth quarter as competition for storage gas in the waning days of the refill season became supercharged. And then came weeks of early heating-season cold, which caused gas utilities to scramble to meet the heating loads. A year of record high prices was capped off in December, with spot prices averaging $6.14/MMBtu, more than two-and-a-half times the previous five-year December average of $2.43/MMBtu. Following is a table of the ratios of revenues received from oil and gas production for the last three years: Oil Gas 2000 83% 17% 1999 83% 17% 1998 79% 21% 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 is highly seasonal, with higher demand in the colder winter months and in very hot summer months, the Partnership 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. As a result, the volumes sold by the Partnership have not fluctuated materially with the change of season. 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 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%. Three purchasers accounted for 78% of the Partnership's total oil and gas production during 1999: Teppco Crude Oil LLC for 46%, Scurlock Permian LLC for 19% and Mobil Corporation for 13%. Three purchasers accounted for 56% of the Partnership's total oil and gas production during 1998: Mesa Pipe Line Company for 21%, Mobil Corporation for 19% and Duke Energy Transport & Trad. for 16%. 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. Moreover, certain prices at which the Partnership may sell its natural gas production are controlled by the Natural Gas Policy Act of 1978, the Natural Gas Wellhead Decontrol Act of 1989 and the regulations promulgated by the Federal Energy Regulatory Commission. Environmental - The Partnership's oil and gas activities are subject to extensive federal, state and local laws and regulations governing the generation, storage, handling, emission, transportation and discharge of materials into the environment. Governmental authorities have the power to enforce compliance with their regulations, and violations carry substantial penalties. This regulatory burden on the oil and gas industry increases its cost of doing business and consequently affects its profitability. The Managing General Partner is unable to predict what, if any, effect compliance will have on the Partnership. Industry Regulations and Guidelines - Certain industry regulations and guidelines apply to the registration, qualification and operation of oil and gas programs in the form of limited partnerships. The Partnership is subject to these guidelines which regulate and restrict transactions between the Managing General Partner and the Partnership. The Partnership complies with these guidelines and the Managing General Partner does not anticipate that continued compliance will have a material adverse effect on Partnership operations. 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, 2000, there were 92 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, 2000, the Partnership possessed an interest in oil and gas properties located in Columbia County of Arkansas; Calcasieu Parish of Louisiana; Eddy and Lea Counties of New Mexico; and Ector, Duval, Midland, Panola, Reeves, Schleicher, Scurry, Ward and Winkler Counties of Texas. These properties consist of various interests in approximately 382 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 2000, 1999 and 1998 There were no leases sold during 2000 and 1999. During 1998, fifty-two leases were sold for approximately $151,100. 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 (bbls) Gas (mcf) - ----------------- ------------ ----- ---------- --------- Freer Acquisition 9/91 at 22 47,000 122,000 Duval County, .2% to 42.5% Texas working interest NE Vacuum Abo 9/91 at 7 144,000 110,000 Acquisition 25% to 50% Lea County, working interest New Mexico SWRI Acquisition 1/92 at 5.8% to 4 37,000 139,000 Midland and Ward 50% working interest Counties, Texas and Eddy County, NM Jal-Mat Acquisition 10/91 at 1.8% to 96 1,000 178,000 Lea County, New 28% working inertest Mexico *Ryder Scott Petroleum Engineers prepared the reserve and present value data for the Partnership's existing properties as of January 1, 2001. 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. The New York Mercantile Exchange price at December 31, 2000 of $26.80 was used as the beginning basis for the oil price. Oil price adjustments from $26.80 per barrel were made in the individual evaluations to reflect oil quality, gathering and transportation costs. The results are an average price received at the lease of $25.54 per barrel in the preparation of the reserve report as of January 1, 2001. In the determination of the gas price, the New York Mercantile Exchange price at December 31, 2000 of $9.78 was used as the beginning basis. Gas price adjustments from $9.78 per Mcf were made in the individual evaluations to reflect BTU content, gathering and transportation costs and gas processing and shrinkage. The results are an average price received at the lease of $9.75 per Mcf in the preparation of the reserve report as of January 1, 2001. 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 2000. 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 producing 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, or receives cash. 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 which qualify as proved developed non-producing 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 2000 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. 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. In 1999, 44 limited partner units were tendered to and purchased by the Managing General Partner at an average base price of $72.57 per unit. In 1998, 15 limited partner units were tendered to and purchased by the Managing General Partner at an average base price of $68.66 per unit. Number of Limited Partner Interest Holders As of December 31, 2000, 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 monthly 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 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. Distributions for 2000 increased significantly due to the record high oil and gas prices received during the year. During 1999, distributions were made totaling $78,268, with $71,268 distributed to the limited partners and $7,000 to the general partners. For the year ended December 31, 1999, distributions of $6.54 per limited partner unit were made, based upon 10,889 limited partner units outstanding. During 1998, distributions were made totaling $197,234, with $185,084 distributed to the limited partners and $12,150 to the general partners. For the year ended December 31, 1998, distributions of $17.00 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, 2000, 1999, 1998, 1997 and 1996 should be read in conjunction with the financial statements included in Item 8: Years ended December 31, -------------------------------------------------------- 2000 1999 1998 1997 1996 ---- ---- ---- ---- ---- Revenues $ 1,154,753 735,235 682,327 1,327,125 1,523,632 Net income (loss) 496,120 143,687 (762,994) 274,614 461,830 Partners' share of net income (loss): General partners 52,512 17,369 (4,789) 48,861 60,732 Limited partners 443,608 126,318 (758,205) 225,753 401,098 Limited partners' net income (loss) per unit 40.74 11.60 (69.63) 20.73 36.84 Limited partners' cash distributions per unit 33.61 6.54 17.00 42.72 60.00 Total assets $ 603,818 514,356 448,962 1,409,227 1,651,202 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 no workovers during 2001 or 2002 to enhance production. Workovers may be performed in the years 2003 or 2004. 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 of approximately 7% per year. Results of Operations A. General Comparison of the Years Ended December 31, 2000 and 1999 The following table provides certain information regarding performance factors for the years ended December 31, 2000 and 1999: Year Ended Percentage December 31, Increase 2000 1999 (Decrease) Average price per barrel of oil $ 28.15 16.15 74% Average price per mcf of gas $ 3.97 2.26 76% Oil production in barrels 33,700 37,800 (11%) Gas production in mcf 50,700 54,670 (7%) Gross oil and gas revenue $1,150,000 734,011 57% Net oil and gas revenue $ 597,207 249,535 139% Partnership distributions $ 406,644 78,268 420% Limited partner distributions $ 365,980 71,268 414% Per unit distribution to limited partners $ 33.61 6.54 414% Number of limited partner units 10,889 10,889 Revenues The Partnership's oil and gas revenues increased to $1,150,000 from $734,011 for the years ended December 31, 2000 and 1999, respectively, an increase of 57%. The principal factors affecting the comparison of the years ended December 31, 2000 and 1999 are as follows: 1. The average price for a barrel of oil received by the Partnership increased during the year ended December 31, 2000 as compared to the year ended December 31, 1999 by 74%, or $12.00 per barrel, resulting in an increase of approximately $404,400 in revenues. Oil sales represented 82% of total oil and gas sales during the year ended December 31, 2000 as compared to 83% during the year ended December 31, 1999. The average price for an mcf of gas received by the Partnership increased during the same period by 76%, or $1.71 per mcf, resulting in an increase of approximately $86,700 in revenues. The total increase in revenues due to the change in prices received from oil and gas production is approximately $491,100. 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 4,100 barrels or 11% during the year ended December 31, 2000 as compared to the year ended December 31, 1999, resulting in a decrease of approximately $66,200 in revenues. Gas production decreased approximately 3,970 mcf or 7% during the same period, resulting in a decrease of approximately $9,000 in revenues. The total decrease in revenues due to the change in production is approximately $75,200. Costs and Expenses Total costs and expenses increased to $658,633 from $591,548 for the years ended December 31, 2000 and 1999, respectively, an increase of 11%. The increase is the result of higher lease operating costs, partially offset by a decrease in general and administrative costs and depletion expense. 1. Lease operating costs and production taxes were 14% higher, or approximately $68,300 more during the year ended December 31, 2000 as compared to the year ended December 31, 1999. 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 decreased less than 1% or approximately $200 during the year ended December 31, 2000 as compared to the year ended December 31, 1999. 3. Depletion expense decreased to $29,000 for the year ended December 31, 2000 from $30,000 for the same period in 1999. This represents a decrease of 3%. 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 to 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, 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 $6,000 as of December 31, 1999. Results of Operations B. General Comparison of the Years Ended December 31, 1999 and 1998 The following table provides certain information regarding performance factors for the years ended December 31, 1999 and 1998: Year Ended Percentage December 31, Increase 1999 1998 (Decrease) Average price per barrel of oil $ 16.15 11.25 44% Average price per mcf of gas $ 2.26 1.83 23% Oil production in barrels 37,800 47,800 (21%) Gas production in mcf 54,670 78,000 (30%) Gross oil and gas revenue $ 734,011 680,756 8% Net oil and gas revenue $ 249,535 41,794 497% Partnership distributions $ 78,268 197,234 (60%) Limited partner distributions $ 71,268 185,084 (61%) Per unit distribution to limited partners $ 6.54 17.00 (61%) Number of limited partner units 10,889 10,889 Revenues The Partnership's oil and gas revenues increased to $734,011 from $680,756 for the years ended December 31, 1999 and 1998, respectively, an increase of 8%. The principal factors affecting the comparison of the years ended December 31, 1999 and 1998 are as follows: 1. The average price for a barrel of oil received by the Partnership increased during the year ended December 31, 1999 as compared to the year ended December 31, 1998 by 44%, or $4.90 per barrel, resulting in an increase of approximately $234,200 in revenues. Oil sales represented 83% of total oil and gas sales during the year ended December 31, 1999 as compared to 79% during the year ended December 31, 1998. The average price for an mcf of gas received by the Partnership increased during the same period by 23%, or $.43 per mcf, resulting in an increase of approximately $33,500 in revenues. The total increase in revenues due to the change in prices received from oil and gas production is approximately $267,700. 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 10,000 barrels or 21% during the year ended December 31, 1999 as compared to the year ended December 31, 1998, resulting in a decrease of approximately $161,500 in revenues. Gas production decreased approximately 23,330 mcf or 30% during the same period, resulting in a decrease of approximately $52,700 in revenues. The total decrease in revenues due to the change in production is approximately $214,200. The decrease of oil and gas production was due primarily to property sales in 1998, downtime and shut-in of wells uneconomical to operate. Costs and Expenses Total costs and expenses decreased to $591,548 from $1,445,321 for the years ended December 31, 1999 and 1998, respectively, a decrease of 59%. The decrease is the result of lower general and administrative costs, depletion expense, provision for impairment and lease operating costs. 2. Lease operating costs and production taxes were 24% lower, or approximately $154,500 less during the year ended December 31, 1999 as compared to the year ended December 31, 1998. The decrease in lease operating costs is primarily due to property sales and the shut-in of wells uneconomical to operate. 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 decreased 16% or approximately $14,200 during the year ended December 31, 1999 as compared to the year ended December 31, 1998. The decrease of general and administrative costs were due in part to additional accounting costs incurred in 1998 in relation to the outsourcing of K-1 tax package preparation and a change in auditors requiring opinions from both the predecessors and successor auditors. Additionally, the Managing General Partner in its effort to cut back on general and administrative costs whenever and wherever possible was able to reduce the cost of reserve reports and K-1 tax package preparation during 1999. 3. Depletion expense decreased to $30,000 for the year ended December 31, 1999 from $328,000 for the same period in 1998. This represents a decrease of 91%. 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. A contributing factor to 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, 2000 as compared to 1999. Another contributing factor was due to the impact of revisions of previous estimates on reserves. 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 decreased depletion expense approximately $209,000 as of December 31, 1998. 3. The Partnership reduced the net capitalized costs of oil and gas properties during 1998 by $387,102. This provision for impairment had the effect of reducing net income, but did not affect cash flow or partner distributions. See Summary of Significant Accounting Policies - Oil and Gas Properties. C. Revenue and Distribution Comparison Partnership income (loss) for the years ended December 31, 2000, 1999 and 1998 was $496,120, $143,687 and $(762,994), respectively. Excluding the effects of depreciation, depletion and amortization and provision for impairment, net income (loss) would have been $525,120 in 2000, $173,687 in 1999 and $(47,892) in 1998. Correspondingly, Partnership distributions for the years ended December 31, 2000, 1999 and 1998 were $406,644, $78,268 and $197,234, respectively. These differences are indicative of the changes in oil and gas prices, production and property sales. 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. The source for the 1999 distributions of $78,268 were oil and gas operations of approximately $74,300 and the change in oil and gas properties of approximately $(7,700), with the balance from available cash on hand at the beginning of the period. The source for the 1998 distributions of $197,234 were oil and gas operations of approximately $49,200 and the change in oil and gas properties of approximately $184,400, resulting in excess cash for contingencies or subsequent distributions. 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. Total distributions during the year ended December 31, 1999 were $78,268 of which $71,268 was distributed to the limited partners and $7,000 to the general partners. The per unit distribution to limited partners during the same period was $6.54. Total distributions during the year ended December 31, 1998 were $197,234 of which $185,084 was distributed to the limited partners and $12,150 to the general partners. The per unit distribution to limited partners during the same period was $17.00. Since inception of the Partnership, cumulative monthly cash distributions of $5,050,939 have been made to the partners. As of December 31, 2000, $4,572,300 or $419.90 per limited partner unit, has been distributed to the limited partners, representing a 84% return of the 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 $493,500 in 2000 compared to $74,300 in 1999 and approximately $49,200 in 1998. The primary source of the 2000 cash flow from operating activities was profitable operations. Cash flows provided by (used in) investing activities were approximately $(29,500) in 2000 compared to $(7,700) in 1999 and approximately $184,400 in 1998. The principle use of the 2000 cash flow from investing activities was additions to oil and gas properties. Cash flows used in financing activities were approximately $406,700 in 2000 compared to $78,300 in 1999 and approximately $197,300 in 1998. The only use in the 2000 financing activities was the distributions to partners. As of December 31, 2000 the Partnership had approximately $245,200 in working capital. The Managing General Partner knows of no unusual contractual commitments and believes the revenues generated from operations are adequate to meet the needs of the Partnership. 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 20 Balance Sheets 21 Statements of Operations 22 Statement of Changes in Partners' Equity 23 Statements of Cash Flows 24 Notes to Financial Statements 26 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, 2000 and 1999, 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, 2000. 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, 2000 and 1999 and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2000 in conformity with accounting principles generally accepted in the United States of America. KPMG LLP Midland, Texas March 21, 2001 Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Balance Sheets December 31, 2000 and 1999 2000 1999 ---- ---- Assets Current assets: Cash and cash equivalents $ 92,659 35,345 Receivable from Managing General Partner 152,562 120,934 - --------- --------- Total current assets 245,221 156,279 - --------- --------- Oil and gas properties - using the full- cost method of accounting 4,443,303 4,413,783 Less accumulated depreciation, depletion and amortization 4,084,706 4,055,706 - --------- --------- Net oil and gas properties 358,597 358,077 - --------- --------- $ 603,818 514,356 ========= ========= Liabilities and Partners' Equity Current liability - distribution payable $ 58 72 - --------- --------- Partners' equity: General partners 11,363 (485) Limited partners 592,397 514,769 - --------- --------- Total partners' equity 603,760 514,284 - --------- --------- $ 603,818 514,356 ========= ========= 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, 2000, 1999 and 1998 2000 1999 1998 ---- ---- ---- Revenues Oil and gas income $ 1,150,000 734,011 680,756 Interest from operations 4,483 1,224 1,562 Miscellaneous income 270 - 9 --------- - --------- --------- 1,154,753 735,235 682,327 --------- - --------- --------- Expenses Production 552,793 484,476 638,962 General and administrative 76,840 77,072 91,257 Depreciation, depletion and amortization 29,000 30,000 328,000 Provision for impairment of oil and gas properties - - 387,102 --------- - --------- --------- 658,633 591,548 1,445,321 --------- - --------- --------- Net income (loss) $ 496,120 143,687(762,994) ========= ========= ========= Net income (loss) allocated to: Managing General Partner $ 47,261 15,632 (4,310) ========= ========= ========= General Partner $ 5,251 1,737 (479) ========= ========= ========= Limited partners $ 443,608 126,318(758,205) ========= ========= ========= Per limited partner unit $ 40.74 11.60 (69.63) ========= ========= ========= 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, 2000, 1999 and 1998 General Limited Partners Partners Total -------- -------- ----- Balance at December 31, 1997 $ 6,085 1,403,008 1,409,093 Net loss (4,789) (758,205) (762,994) Distributions (12,150) (185,084) (197,234) ------- - --------- --------- Balance at December 31, 1998 (10,854) 459,719 448,865 Net income 17,369 126,318 143,687 Distributions (7,000) (71,268) (78,268) ------- - --------- --------- Balance at December 31, 1999 (485) 514,769 514,284 Net income 52,512 443,608 496,120 Distributions (40,664) (365,980) (406,644) ------- - --------- --------- Balance at December 31, 2000 $ 11,363 592,397 603,760 ======= ========= ========= 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, 2000, 1999 and 1998 2000 1999 1998 ---- ---- ---- Cash flows from operating activities: Cash received from oil and gas sales $ 1,087,471 648,055 803,588 Cash paid to Managing General Partner for administrative fees and general and administrative overhead (598,462) (575,015)(755,901) Interest received 4,483 1,224 1,562 --------- - --------- --------- Net cash provided by operating activities 493,492 74,264 49,249 --------- - --------- --------- Cash flows from investing activities: Additions to oil and gas properties (29,520) (7,653) - Sale of oil and gas properties - - 184,445 --------- - --------- --------- Net cash (used in) provided by investing activities (29,520) (7,653) 184,445 --------- - --------- --------- Cash flows used in financing activities: Distributions to partners (406,658) (78,293)(197,271) --------- - --------- --------- Net increase (decrease) in cash and cash equivalents 57,314 (11,682) 36,423 Beginning of period 35,345 47,027 10,604 --------- - --------- --------- End of period $ 92,659 35,345 47,027 ========= ========= ========= (continued) 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, continued Years ended December 31, 2000, 1999 and 1998 2000 1999 1998 ---- ---- ---- Reconciliation of net income (loss) to net cash provided by operating activities: Net income (loss) $ 496,120 143,687(762,994) Adjustments to reconcile net income (loss) to net cash provided by operating activities: Depreciation, depletion and amortization 29,000 30,000 328,000 Provision for impairment of oil and gas properties - - 387,102 (Increase) decrease in receivables (62,799) (85,956) 122,823 Increase (decrease) in payables 31,171 (13,467) (25,682) ------- - ------- ------- Net cash provided by operating activities $ 493,492 74,264 49,249 ======= ======= ======= 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 contributions 100% - Oil and gas sales 90% 10% All other revenues 90% 10% Organization and offering costs (1) 100% - Amortization or organization costs 100% - Property acquisition costs 100% - Gain/loss on property disposition 90% 10% Operating and administrative costs (2) 90% 10% 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. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 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. The Partnership's policy for depreciation, depletion and amortization of oil and gas properties is computed under the units of revenue method. Under the units of revenue method, depreciation, depletion and amortization is computed on the basis of current gross revenues from production in relation to future gross revenues, based on current prices, from estimated production of proved oil and gas reserves. Under the units of revenue method, the Partnership computes the provision by multiplying the total unamortized cost of oil and gas properties by an overall rate determined by dividing (a) oil and gas revenues during the period by (b) the total future gross oil and gas revenues as estimated by the Partnership's independent petroleum consultants. It is reasonably possible that those estimates of anticipated future gross revenues, the remaining estimated economic life of the production, or both could be changed significantly in the near term due to the potential fluctuation of oil and gas prices or production. The depletion estimate would also be affected by this change. 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. As of December 31, 2000 and 1999 the net capitalized costs did not exceed the estimated present value of oil and gas reserves. As of December 31, 1998, the net capitalized cost exceeded the estimated present value of oil and gas reserves thus an adjustment of $387,102 was made to the financial statement. 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. 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. 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, 2000, 1999 and 1998, there were no significant amounts of imbalance in terms of units and 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, 2000 and 1999 is $288,582 and $428,221, respectively, more than that shown on the accompanying Balance Sheets in accordance with generally accepted accounting principles. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 2. Summary of Significant Accounting Policies - continued 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, 2000, 1999 and 1998, there were 10,889 limited partner units outstanding held by 527, 528 and 531 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. 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. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 3. 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. 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. As of December 31, 2000, 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. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 4. 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 is usual in the industry and 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 $158,900, $161,500 and $165,100 for the years ended December 31, 2000, 1999 and 1998, respectively. 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 $7,600, $2,400 and $1,900 for the years ended December 31, 2000, 1999 and 1998, respectively, and the Managing General Partner believes that these costs are comparable to similar charges paid by the Partnership to unrelated third parties. Southwest Royalties, Inc., the Managing General Partner, was paid $72,000 during 2000, 1999 and 1998, as an administrative fee for reimbursement of indirect general and administrative overhead expenses. Receivables from Southwest Royalties, Inc., the Managing General Partner, of approximately $152,600 and $120,900 are from oil and gas production, net of lease operating costs and production taxes, as of December 31, 2000 and 1999, respectively. In addition, a director and officer of the Managing General Partner is a partner in a law firm, with such firm providing legal services to the Partnership. There were no legal services provided for the year ended December 31, 2000, 1999 and 1998. 5. 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 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%. Three purchasers accounted for 78% of the Partnership's total oil and gas production during 1999: Teppco Crude Oil for 46%, Scurlock Permian LLC for 19% and Mobil Corporation for 13%. Three purchasers accounted for 56% of the Partnership's total oil and gas production during 1998: Mesa Pipe Line Company for 21%, Mobil Corporation for 19% and Duke Energy Transport and Trad. for 16%. 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 6. Estimated Oil and Gas Reserves (unaudited) The Partnership's interest in proved oil and gas reserves is as follows: Oil (bbls) Gas (mcf) ---------- --------- Proved developed and undeveloped reserves - January 1, 1998 344,000 884,000 Revisions of estimates in place (202,000) (146,000) Production (48,000) (78,000) Sale of minerals in place (14,000) (277,000) ------- -------- December 31, 1998 80,000 383,000 Revisions of estimates in place 297,000 132,000 Production (38,000) (55,000) ------- -------- December 31, 1999 339,000 460,000 Revisions of estimates in place 6,000 221,000 Production (34,000) (51,000) ------- -------- December 31, 2000 311,000 630,000 ======= ======== Proved developed reserves - December 31, 1998 69,000 326,000 ======= ======== December 31, 1999 327,000 402,000 ======= ======== December 31, 2000 308,000 576,000 ======= ========= All of the Partnership's reserves are located within the continental United States. *Ryder Scott Petroleum Engineers prepared the reserve and present value data for the Partnership's existing properties as of January 1, 2001. 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. The New York Mercantile Exchange price at December 31, 2000 of $26.80 was used as the beginning basis for the oil price. Oil price adjustments from $26.80 per barrel were made in the individual evaluations to reflect oil quality, gathering and transportation costs. The results are an average price received at the lease of $25.54 per barrel in the preparation of the reserve report as of January 1, 2001. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 6. Estimated Oil & Gas Reserves (unaudited) - continued In the determination of the gas price, the New York Mercantile Exchange price at December 31, 2000 of $9.78 was used as the beginning basis. Gas price adjustments from $9.78 per Mcf were made in the individual evaluations to reflect BTU content, gathering and transportation costs and gas processing and shrinkage. The results are an average price received at the lease of $9.75 per Mcf in the preparation of the reserve report as of January 1, 2001. 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 producing 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, or receives cash. Southwest Oil & Gas Income Fund X-B, L.P. (a Delaware limited partnership) Notes to Financial Statements 6. 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, 2000, 1999 and 1998 is presented below: 2000 1999 1998 ---- ---- ---- Future cash inflows $ 14,086,000 8,807,000 1,451,000 Production and development costs 6,718,000 5,155,000 925,000 ---------- ---------- ---------- Future net cash flows 7,368,000 3,652,000 526,000 10% annual discount for estimated timing of cash flows 3,584,000 1,553,000 146,000 ---------- ---------- ---------- Standardized measure of discounted future net cash flows $ 3,784,000 2,099,000 380,000 ========== ========== ========== The principal sources of change in the standardized measure of discounted future net cash flows for the years ended December 31, 2000, 1999 and 1998 are as follows: 2000 1999 1998 ---- ---- ---- Sales of oil and gas produced, net of production costs $ (597,000) (250,000) (42,000) Changes in prices and production costs 1,833,000 395,000 (718,000) Changes of production rates (timing) and others (150,000) (75,000) 81,000 Sales of minerals in place - - (242,000) Revisions of previous quantities estimates 389,000 1,611,000 (700,000) Accretion of discount 210,000 38,000 182,000 Discounted future net cash flows - Beginning of year 2,099,000 380,000 1,819,000 ---------- --------- --------- End of year $ 3,784,000 2,099,000 380,000 ========== ========= ========= 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 7. Selected Quarterly Financial Results - (unaudited) Quarter ---------------------------------------------- First Second Third Fourth ------ ------- ------ ------ 2000: Total revenues $ 255,757 271,828 302,886 324,282 Total expenses 187,818 150,890 171,611 148,314 Net income 67,939 120,938 131,275 175,968 Net income per limited partners unit 5.53 9.99 10.80 14.42 1999: Total revenues $ 130,298 168,628 205,496 230,813 Total expenses 158,269 169,202 143,056 121,021 Net income (loss) (27,971) (574) 62,440 109,792 Net income (loss) per limited partners unit (2.44) (.11) 5.12 9.03 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 serves for a term of one year. The present directors of the Managing General Partner have served in their capacity since the Company's formation in 1983. Name Age Position - -------------------- --- ----------------------------------- - -- H. H. Wommack, III 45 Chairman of the Board, President, Chief Executive Officer, Treasurer and Director H. Allen Corey 44 Secretary and Director Bill E. Coggin 46 Vice President and Chief Financial Officer J. Steven Person 42 Vice President, Marketing Paul L. Morris 59 Director H. H. Wommack, III, is Chairman of the Board, President, Chief Executive Officer, Treasurer, principal stockholder and a director of the Managing General Partner, and has served as its President since the Company's organization in August, 1983. Prior to the formation of the Company, Mr. Wommack was a self-employed independent oil producer engaged in the purchase and sale of royalty and working interests in oil and gas leases, and the drilling of exploratory and developmental oil and gas wells. Mr. Wommack holds a J.D. degree from the University of Texas from which he graduated in 1980, and a B.A. from the University of North Carolina in 1977. H. Allen Corey, a founder of the Managing General Partner, has served as the Managing General Partner's secretary and a director since its inception. Mr. Corey is President of Trolley Barn Brewery, Inc., a brew pub restaurant chain based in the Southeast. Prior to his involvement with Trolley Barn, Mr. Corey was a partner at the law firm of Miller & Martin in Chattanooga, Tennessee. He is currently of counsel to the law firm of Baker, Donelson, Bearman & Caldwell, with the offices in Chattanooga, Tennessee. Mr. Corey received a J.D. degree from the Vanderbilt University Law School and B.A. degree from the University of North Carolina at Chapel Hill. Bill E. Coggin, Vice President and Chief Financial Officer, has been with the Managing General Partner since 1985. Mr. Coggin was Controller for Rod Ric Corporation of Midland, Texas, an oil and gas drilling company, during the latter part of 1984. He was Controller for C.F. Lawrence & Associates, Inc., an independent oil and gas operator also of Midland, Texas during the early part of 1984. Mr. Coggin taught public school for four years prior to his business experience. Mr. Coggin received a B.S. in Education and a B.B.A. in Accounting from Angelo State University. J. Steven Person, Vice President, Marketing, assumed his responsibilities with the Managing General Partner as National Marketing Director in 1989. Prior to joining the Managing General Partner, Mr. Person served as Vice President of Marketing for CRI, Inc., and was associated with Capital Financial Group and Dean Witter (1983). He received a B.B.A. from Baylor University in 1982 and an M.B.A. from Houston Baptist University in 1987. Paul L. Morris has served as a Director of Southwest Royalties Holdings, Inc. since August 1998 and Southwest Royalties, Inc. since September 1998. Mr. Morris is President and CEO of Wagner & Brown, Ltd., one of the largest independently owned oil and gas companies in the United States. Prior to his position with Wagner & Brown, Mr. Morris served as President of Banner Energy and in various managerial positions with the Columbia Gas System, Inc. Key Employees Jon P. Tate, Vice President, Land and Assistant Secretary, age 43, assumed his responsibilities with the Managing General Partner in 1989. Prior to joining the Managing General Partner, Mr. Tate was employed by C.F. Lawrence & Associates, Inc., an independent oil and gas company, as Land Manager from 1981 through 1989. Mr. Tate is a member of the Permian Basin Landman's Association and American Association of Petroleum Landmen. Mr. Tate received his B.B.S. degree from Hardin-Simmons University. R. Douglas Keathley, Vice President, Operations, age 45, assumed his responsibilities with the Managing General Partner as a Production Engineer in October, 1992. Prior to joining the Managing General Partner, Mr. Keathley was employed for four (4) years by ARCO Oil & Gas Company as senior drilling engineer working in all phases of well production (1988- 1992), eight (8) years by Reading & Bates Petroleum Company as senior petroleum engineer responsible for drilling (1980-1988) and two (2) years by Tenneco Oil Company as drilling engineer responsible for all phases of drilling (1978-1980). Mr. Keathley received his B.S. in Petroleum Engineering in 1977 from the University of Oklahoma. 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 have any directors or executive officers. The executive officers of the Managing General Partner do not receive any cash compensation, bonuses, deferred compensation or compensation pursuant to any type of plan, from the Partnership. The Managing General Partner received, as an administrative fee, $72,000 during 2000, 1999 and 1998. 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 144.0 limited partner units, or a 1.3% limited partner interest. The Managing General Partner total percentage interest ownership in the Partnership is 10.2%. 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. A list of beneficial owners of limited partner units, acquired by the Managing General Partner, is as follows: Amount and Nature of Percent Name and Address of Beneficial of Title of Class Beneficial Owner Ownership Class - ------------------- --------------------------- --------------- ------- Limited Partnership Southwest Royalties, Inc. Directly Owns 1.3% Interest Managing General Partner 144.0 Units 407 N. Big Spring Street Midland, TX 79701 Limited Partnership H. H. Wommack, III Indirectly Owns 1.3% Interest Chairman of the Board, 144.0 Units President, CEO, Treasurer and Director of Southwest Royalties, Inc., the Managing General Partner 407 N. Big Spring Street Midland, TX 79701 Limited Partnership H. Allen Corey Indirectly Owns 1.3% Interest Secretary and Director of 144.0 Units Southwest Royalties, Inc., the Managing General Partner 633 Chestnut Street Chattanooga, TN 37450-1800 Limited Partnership Bill E. Coggin Indirectly Owns 1.3% Interest Vice President and CFO of 144.0 Units Southwest Royalties, Inc., the Managing General Partner 407 N. Big Spring Street Midland, TX 79701 Limited Partnership J. Steven Person Indirectly Owns 1.3% Interest Vice President, Marketing 144.0 Units of Southwest Royalties, Inc., the Managing General Partner 407 N. Big Spring Street Midland, TX 79701 Limited Partnership Paul L. Morris Indirectly Owns 1.3% Interest Director of Southwest 144.0 Units 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 2000, 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 $158,900 for administrative overhead attributable to operating such properties during 2000. 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 $7,600 for the year ended December 31, 2000. In the opinion of management, the terms of the above transactions are similar to ones with unaffiliated third parties. Part IV Item 14. 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.) 27 Financial Data Schedule (b) Reports on Form 8-K There were no reports filed on Form 8-K during the quarter ended December 31, 2000. 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: March 30, 2001 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. By: /s/ H. H. Wommack, III ----------------------------------- H. H. Wommack, III, Chairman of the Board, President, Chief Executive Officer, Treasurer and Director Date: March 30, 2001 By: /s/ H. Allen Corey ----------------------------- H. Allen Corey, Secretary and Director Date: March 30, 2001