Exhibit 20 Parker & Parsley Reports Second Quarter and Six Month Results Midland, Texas, July 29, 1997...Parker & Parsley Petroleum Company("Parker & Parsley") (NYSE:PDP) today announced financial and operating results for the second quarter and six months ended June 30, 1997. Second Quarter 1997 Parker & Parsley reported net income of $7.4 million ($.21 per share) on revenues of $102.3 million compared to net income of $80.2 million ($2.24 per share) on revenues of $182.5 million for the second quarter of 1996. The decrease in net income was directly attributable to lower crude oil and natural gas prices along with higher exploration expense associated with the Company's expanding exploration efforts. In addition, the second quarter of 1996 included a $68.4 million ($1.91 per share) gain on disposition of assets which primarily resulted from the Company's divestiture of its Australasian oil and gas properties. Net cash provided by operations was $51.1 million and total weighted average shares outstanding was 35.4 million for the second quarter of 1997. For the second quarter, daily oil production increased 3,042 barrels or 10.6 percent to 31,663 barrels compared to 28,621 barrels during the second quarter of 1996. Daily natural gas production increased 19.3 million cubic feet or 9.5 percent to 222.2 million cubic feet from 202.9 million cubic feet during the same period in 1996. Parker & Parsley's average crude oil price decreased $2.00 per barrel or 9.8 percent to $18.41 per barrel compared to $20.41 per barrel in the second quarter of 1996. The Company's average natural gas price decreased $.14 per Mcf or 6.3 percent to $2.07 per Mcf compared to $2.21 per Mcf for the same period in 1996. Parker & Parsley Chairman, Scott D. Sheffield, stated "The strong increases in oil and gas production volumes is the direct result of the Company's extensive drilling program. The Company looks forward to the impending merger with Mesa with great enthusiasm. The new Pioneer Natural Resources will have an inventory of over 2,000 drilling locations, primarily located in the Spraberry, West Panhandle and Hugoton Fields which we intend to exploit over the next three years." Year-to-Date 1997 For the six months ended June 30, 1997, Parker & Parsley reported net income of $26.0 million ($.74 per share) on revenues of $215.9 million, compared to net income of $94.9 million ($2.66 per share) on revenues of $300.8 million for the same period in 1996. The first half of 1996 period includes a $74.8 million ($2.10 per share) gain on disposition of assets, offsetting the impact of higher oil and gas production rates and reductions in production and interest costs for the 1997 period. Year-to-date, net cash provided by operations was $124.6 million and total weighted average shares outstanding was 35.4 million. 5 For the first half of 1997, daily oil production, net of production associated with assets sold during 1996, increased 3,738 barrels or 13.3 percent to 31,787 barrels compared to 28,049 barrels during the 1996 period and daily natural gas production, net of production associated with assets sold during 1996, increased 30.4 million cubic feet or 16.5 percent to 215.2 million cubic feet from 184.8 million cubic feet during the same period in 1996. The Company's average crude oil price decreased $.10 per barrel to $19.20 per barrel compared to $19.30 in the first half of 1996. The Company's average natural gas price increased $.12 per Mcf or 5.6 percent to $2.26 per Mcf compared to $2.14 per Mcf for the same period in 1996. Pioneer Natural Resources As previously announced, Parker & Parsley and MESA Inc. have signed a definitive agreement to merge and create Pioneer Natural Resources Company, the third largest independent oil and gas exploration and production company in the United States. On June 27, 1997, the Securities and Exchange Commission declared effective the Joint Proxy Statement/Prospectus for the proposed merger. Both companies have scheduled special meetings on August 7, 1997 for stockholders to vote on the proposed merger. Scott D. Sheffield, Chief Executive Officer of Pioneer Natural Resources stated " With the recent activity in the oil and gas industry, Pioneer Natural Resources has positioned itself as an industry leader. Pioneer's growth strategy is based upon internal growth through development of its existing asset base, enhancement of its exploration efforts and strategic acquisitions and mergers. We look forward to the finalization of the merger on August 7 and Pioneer's ability to take advantage of opportunities that will bring additional value to our shareholders." Parker & Parsley Petroleum Company is one of the largest public independent oil and gas exploration and production companies in the United States. Parker & Parsley's oil and gas properties are located in the United States, principally in the Permian Basin of West Texas, the onshore Gulf Coast region of South Texas and Louisiana, the Mid-Continent region and in Argentina. ##### For Information Contact: Lon C. Kile (915) 683-4768 6 PARKER & PARSLEY PETROLEUM COMPANY CONDENSED CONSOLIDATED BALANCE SHEETS (in thousands) June 30, December 31, ASSETS 1997 1996 ---------- ---------- Current assets $ 99,412 $ 117,039 Oil & Gas Properties 1,577,736 1,426,382 Gas Processing Facilities 50,770 59,276 Accumulated DD&A (489,143) (445,238) Other Assets, Net 44,727 42,406 --------- ---------- $1,283,502 $1,199,865 ========= ========== LIABILITIES & STOCKHOLDERS' EQUITY Current Liabilities $ 89,178 $ 90,970 Long-Term Debt 349,457 320,908 Other Noncurrent Liabilities 27,336 8,071 Deferred Income Taxes 73,800 60,800 Preferred Stock of Subsidiary 188,820 188,820 Stockholders' Equity 554,911 530,296 --------- ---------- $1,283,502 $1,199,865 ========= ========== 7 PARKER & PARSLEY PETROLEUM COMPANY CONSOLIDATED STATEMENTS OF OPERATIONS (in thousands, except for per share data) Three Months Ended Six Months Ended June 30, June 30, 1997 1996 1997 1996 --------- ---------- --------- --------- REVENUES: Oil & Gas $ 94,847 $ 93,989 $ 198,626 $ 192,014 Natural Gas Processing 4,954 5,685 11,819 11,104 Interest & Other 680 1,256 2,833 2,423 Gain on Disposition of Assets, Net 1,862 81,578 2,637 95,249 -------- --------- -------- -------- 102,343 182,508 215,915 300,790 COSTS AND EXPENSES: Oil & Gas Production 22,397 22,042 44,208 47,841 Production Taxes 4,914 4,868 11,184 9,563 Natural Gas Processing 2,601 2,837 6,098 6,035 DD&A - Oil & Gas 28,491 26,177 54,860 54,773 DD&A - Gas Plants & Other 2,388 2,282 4,649 4,865 Exploration & Abandonments 10,800 5,775 18,415 10,761 G&A 8,270 6,630 14,990 12,990 Interest 10,259 11,370 20,154 26,052 Other 410 971 831 1,344 -------- --------- -------- -------- 90,530 82,952 175,389 174,224 -------- --------- -------- -------- Income Before Income Taxes 11,813 99,556 40,526 126,566 Income Tax Provision (4,400) (19,400) (14,500) (31,700) -------- --------- -------- -------- Net Income $ 7,413 $ 80,156 $ 26,026 $ 94,866 ======== ========= ======== ======== Net Income Per Share: Primary $ 0.21 $ 2.24 $ 0.74 $ 2.66 ======== ========= ======== ======== Fully Diluted $ 0.21 $ 1.93 $ 0.71 $ 2.32 ======== ========= ======== ======== Dividends Declared Per Share $ - $ - $ 0.05 $ 0.05 ======== ========= ======== ======== Weighted Average Shares Outstanding 35,363 35,803 35,364 35,700 ======== ========= ======== ======== 8 PARKER & PARSLEY PETROLEUM COMPANY CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (in thousands) Three Months Ended Six Months Ended June 30, June 30, 1997 1996 1997 1996 --------- --------- ----------- ----------- CASH FLOWS FROM OPERATIONS: Net Income $ 7,413 $ 80,156 $ 26,026 $ 94,866 Depletion, Depreciation & Amortization 30,879 28,459 59,509 59,638 Exploration Expenses, including dry holes 8,168 4,339 14,191 8,247 Deferred Income Taxes 2,600 19,400 11,400 31,700 Gain on Disposition of Assets, Net (1,862) (81,578) (2,637) (95,249) Other Noncash Items 1,733 1,417 2,180 1,677 Net Changes in Operating Assets & Liabilities 2,199 1,654 13,924 19,692 -------- -------- ---------- ---------- Net Cash Provided by Operations 51,130 53,847 124,593 120,571 Net Cash Provided by (Used in) Investing (90,096) 78,920 (157,972) 147,699 Net Cash Provided by (Used in) Financing 39,384 (98,999) 24,511 (228,434) -------- -------- ---------- ---------- Effect of Exchange Rate Changes on Cash & Cash Equivalents - - - 290 Net Increase (Decrease) in Cash & Cash Equivalents 418 33,768 (8,868) 39,836 Cash & Cash Equivalents, Beginning of Period 9,425 26,298 18,711 19,940 -------- -------- ---------- ---------- Cash & Cash Equivalents, End of Period $ 9,843 $ 60,066 $ 9,843 $ 60,066 ======== ======== ========== ========== 9 PARKER & PARSLEY PETROLEUM COMPANY SUMMARY PRODUCTION, PRICE AND COST DATA Three Months Ended Six Months Ended June 30, June 30, 1997 1996 1997 1996 ------- ------- ------- ------- Average Daily Production: Oil (Bbls) 31,663 28,621 31,787 31,432 Gas (Mcf) 222,210 202,862 215,230 209,866 Total Production: Oil (MBBLS) 2,881 2,604 5,753 5,721 Gas (MMCF) 20,221 18,460 38,957 38,196 Equivalent Barrels (MBOE) 6,251 5,681 12,246 12,087 Average Price: Oil $18.41 $20.41 $19.20 $19.30 Gas $2.07 $2.21 $2.26 $2.14 Production Costs Per BOE: Operating Expenses $3.58 $3.88 $3.61 $3.96 Production Taxes $0.79 $0.86 $0.91 $0.79 ------- ------- ------- ------- Total $4.37 $4.74 $4.52 $4.75 10