The Company operates in two business segments: (i) exploration and production and (ii) midstream. The exploration and production segment is engaged in the exploration, development, production and acquisition of oil and natural gas resources in the United States and is currently focused primarily on the oil and liquids-rich portion of the Wolfcamp and Bone Spring plays in the Delaware Basin in Southeast New Mexico and West Texas. The Company also operates in the Eagle Ford shale play in South Texas and the Haynesville shale and Cotton Valley plays in Northwest Louisiana. The midstream segment conducts midstream operations in support of the Companys exploration, development and production operations and provides natural gas processing, oil transportation services, oil, natural gas and salt water gathering services and salt water disposal services to third parties. Substantially all of the Companys midstream operations in the Rustler Breaks and Wolf asset areas in the Delaware Basin are conducted through San Mateo. The following tables present selected financial information for the periods presented regarding the Companys business segments on a stand-alone basis, corporate expenses that are not allocated to a segment and the consolidation and elimination entries necessary to arrive at the financial information for the Company on a consolidated basis (in thousands). On a consolidated basis, midstream services revenues consist primarily of those revenues from midstream operations related to third parties, including working interest owners in the Companys operated wells. All midstream services revenues associated with Company-owned production are eliminated in consolidation. In evaluating the operating results of the exploration and production and midstream segments, the Company does not allocate certain expenses to the individual segments, including general and administrative expenses. Such expenses are reflected in the column labeled Corporate. Exploration and Production Consolidations and Eliminations Consolidated Company Midstream Corporate Three Months Ended September 30, 2019 Oil and natural gas revenues $ 228,188 $ 1,189 $  $  $ 229,377 Midstream services revenues  35,533  (20,276 ) 15,257 Sales of purchased natural gas 3,080 16,784   19,864 Lease bonus - mineral acreage 1,711    1,711 Realized gain on derivatives 3,346    3,346 Unrealized gain on derivatives 9,847    9,847 Expenses (1) 164,352 30,611 18,613 (20,276 ) 193,300 Operating income (loss) (2) $ 81,820 $ 22,895 $ (18,613 ) $  $ 86,102 Total assets $ 3,332,910 $ 566,551 $ 37,178 $  $ 3,936,639 Capital expenditures (3) $ 201,323 $ 66,438 $ 1,705 $  $ 269,466 _____________________ (1) Includes depletion, depreciation and amortization expenses of $87.7 million and $4.1 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $0.7 million . (2) Includes $9.8 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment. (3) Includes $6.5 million attributable to land and seismic acquisition expenditures related to the exploration and production segment and $47.2 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment. Exploration and Production Consolidations and Eliminations Consolidated Company Midstream Corporate Three Months Ended September 30, 2018 Oil and natural gas revenues $ 215,248 $ 1,034 $  $  $ 216,282 Midstream services revenues  24,950  (18,141 ) 6,809 Realized gain on derivatives 5,424    5,424 Unrealized loss on derivatives (21,337 )    (21,337 ) Expenses (1) 128,263 10,162 19,041 (18,141 ) 139,325 Operating income (loss) (2) $ 71,072 $ 15,822 $ (19,041 ) $  $ 67,853 Total assets $ 2,697,685 $ 391,323 $ 65,194 $  $ 3,154,202 Capital expenditures (3) $ 716,751 $ 47,153 $ 312 $  $ 764,216 _____________________ (1) Includes depletion, depreciation and amortization expenses of $67.2 million and $2.6 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $0.6 million . (2) Includes $7.3 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment. (3) Includes $554.9 million attributable to land and seismic acquisition expenditures related to the exploration and production segment and $23.1 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment. Exploration and Production Consolidations and Eliminations Consolidated Company Midstream Corporate Nine Months Ended September 30, 2019 Oil and natural gas revenues $ 629,414 $ 4,292 $  $  $ 633,706 Midstream services revenues  97,953  (56,499 ) 41,454 Sales of purchased natural gas 3,080 36,978   40,058 Lease bonus - mineral acreage 1,711    1,711 Realized gain on derivatives 7,781    7,781 Unrealized loss on derivatives (29,715 )    (29,715 ) Expenses (1) 447,844 79,870 53,349 (56,499 ) 524,564 Operating income (loss) (2) $ 164,427 $ 59,353 $ (53,349 ) $  $ 170,431 Total assets $ 3,332,910 $ 566,551 $ 37,178 $  $ 3,936,639 Capital expenditures (3) $ 565,466 $ 137,577 $ 3,911 $  $ 706,954 _____________________ (1) Includes depletion, depreciation and amortization expenses of $236.0 million and $11.6 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $1.9 million . (2) Includes $25.6 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment. (3) Includes $37.8 million attributable to land and seismic acquisition expenditures related to the exploration and production segment and $85.1 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment. Exploration and Production Consolidations and Eliminations Consolidated Company Midstream Corporate Nine Months Ended September 30, 2018 Oil and natural gas revenues $ 602,737 $ 4,518 $  $  $ 607,255 Midstream services revenues  60,658  (47,374 ) 13,284 Realized loss on derivatives (1,322 )    (1,322 ) Unrealized loss on derivatives (9,492 )    (9,492 ) Expenses (1) 359,830 26,723 55,338 (47,374 ) 394,517 Operating income (loss) (2) $ 232,093 $ 38,453 $ (55,338 ) $  $ 215,208 Total assets $ 2,697,685 $ 391,323 $ 65,194 $  $ 3,154,202 Capital expenditures (3) $ 1,105,541 $ 125,770 $ 1,570 $  $ 1,232,881 _____________________ (1) Includes depletion, depreciation and amortization expenses of $184.4 million and $6.5 million for the exploration and production and midstream segments, respectively. Also includes corporate depletion, depreciation and amortization expenses of $1.8 million . (2) Includes $18.2 million in net income attributable to non-controlling interest in subsidiaries related to the midstream segment. (3) Includes $613.8 million attributable to land and seismic acquisition expenditures related to the exploration and production segment and $61.6 million in capital expenditures attributable to non-controlling interest in subsidiaries related to the midstream segment.