The 100 largest oil and gas operators in the United States — ranked by total wells operated nationwide, with producing wells, recent permits, DUC inventory, and state footprint for each. Click any operator for its full profile.
Compiled from state regulator well-header records across the US. Refreshed monthly. Data as of 2026-07-03 · CC BY 4.0.
As of 2026-07-03, the largest oil & gas operator in the United States by wells operated is Chevron with 75,570 wells across 24 states, ahead of Occidental Petroleum (Oxy) (61,775) — per state regulator well-header records aggregated by Buckhead Energy.
| # | Operator | Wells (US) | Producing | Permits 24mo | DUCs | States | Top Formation |
|---|---|---|---|---|---|---|---|
| 1 | Chevron | 75,570 | 44,632 | 3,090 | 11,631 | CA, TX, LA, NM +20 | Monterey-Temblor |
| 2 | Occidental Petroleum (Oxy) | 61,775 | 38,741 | 1,817 | 7,096 | TX, WY, NM, KS +24 | Thirty-one Carbonate-Chert |
| 3 | Diversified Production LLC | 60,757 | 59,189 | 272 | 519 | PA, WV, TX, OH +6 | Marcellus |
| 4 | Aera Energy | 57,803 | 39,119 | 2,106 | 7,401 | CA | Monterey-Temblor |
| 5 | Hilcorp Energy Company | 51,256 | 46,799 | 969 | 2,562 | TX, NM, AK, LA +6 | Wilcox Lobo |
| 6 | ExxonMobil | 39,140 | 16,298 | 940 | 9,868 | TX, OK, LA, NM +25 | Vicksburg |
| 7 | EOG Resources | 38,356 | 16,690 | 1,542 | 3,615 | WY, TX, NM, OK +17 | Niobrara- Mowry |
| 8 | California Resources Corporation (CRC) | 22,929 | 15,782 | 1,660 | 1,687 | CA | Monterey-Temblor |
| 9 | Scout Energy Management | 21,807 | 20,014 | 117 | 881 | TX, KS, UT, OK +4 | Thirty-one Carbonate-Chert |
| 10 | Pioneer Natural Resources | 20,427 | 16,672 | 1,198 | 1,254 | TX, LA, CO, KS +8 | Thirty-one Carbonate-Chert |
| 11 | Devon Energy | 20,322 | 10,821 | 1,372 | 2,029 | WY, NM, TX, ND +16 | Niobrara- Mowry |
| 12 | Diamondback Energy | 17,413 | 14,283 | 1,230 | 1,417 | TX, OK, WY, KS +7 | Thirty-one Carbonate-Chert |
| 13 | Apache | 17,047 | 10,659 | 365 | 3,987 | TX, LA, NM, OK +20 | Thirty-one Carbonate-Chert |
| 14 | Marathon Oil Company | 16,379 | 6,631 | 247 | 2,491 | TX, IL, WY, ND +18 | Austin Chalk |
| 15 | Mach Resources | 15,542 | 14,534 | 80 | 696 | TX, OK, KS, WY +1 | Granite Wash |
| 16 | Conocophillips Company | 15,399 | 5,192 | 242 | 4,970 | TX, AK, OK, NM +18 | Wilcox Lobo |
| 17 | Citation Oil & Gas | 15,386 | 8,363 | 80 | 4,832 | OK, TX, WY, IL +10 | Woodford |
| 18 | Noble Energy | 15,148 | 9,466 | 154 | 1,143 | CO, WY, TX, OK +15 | Muddy J Sand |
| 19 | Bpx Operating Company | 12,711 | 6,717 | 424 | 3,282 | TX, WY, OK, AK +10 | Austin Chalk |
| 20 | Merit Energy Company | 12,173 | 10,089 | 17 | 1,380 | TX, OK, WY, AR +11 | Vicksburg |
| 21 | Basa Resources | 11,685 | 11,334 | 17 | 150 | TX, OK | Travis Peak |
| 22 | Berry Petroleum | 11,511 | 7,750 | 855 | 912 | CA, UT, CO, TX +10 | Monterey-Temblor |
| 23 | Enervest Operating | 11,228 | 8,355 | 36 | 333 | VA, LA, OH, TX +10 | Berea-Murrysville |
| 24 | Sentinel Peak Resources | 10,943 | 7,764 | 756 | 1,294 | CA | Monterey-Temblor |
| 25 | Continental Resources | 9,852 | 6,707 | 538 | 1,045 | ND, OK, WY, TX +14 | Bakken |
| 26 | Burk Royalty | 9,559 | 8,426 | 53 | 506 | TX, OK, NM, WY +3 | Granite Wash |
| 27 | Anschutz Exploration | 8,690 | 515 | 333 | 788 | WY, UT, CO, ND +16 | Niobrara- Mowry |
| 28 | Cog Operating | 8,352 | 6,112 | 380 | 372 | TX, NM | Thirty-one Carbonate-Chert |
| 29 | ConocoPhillips | 7,613 | 4,977 | 596 | 917 | TX, NM, ND, OK +8 | Austin Chalk |
| 30 | Upp Operating LLC | 7,411 | 7,335 | 19 | 70 | TX | Ozona Canyon |
| 31 | Formentera Operations LLC | 6,969 | 6,613 | 118 | 231 | TX, OK, ND, LA +1 | Thirty-one Carbonate-Chert |
| 32 | Ovintiv USA INC | 6,766 | 3,966 | 400 | 1,178 | TX, OK, UT, WY +3 | Thirty-one Carbonate-Chert |
| 33 | Urban Oil & Gas Group | 6,689 | 6,286 | 4 | 262 | AL, TX, WY, UT +6 | Floyd-Neal |
| 34 | Mewbourne Oil Company | 6,509 | 4,643 | 853 | 740 | NM, TX, OK, KS | Avalon-Bone Spring |
| 35 | Kinder Morgan Production | 6,245 | 5,181 | 209 | 546 | TX, NE, NM, KS +1 | Thirty-one Carbonate-Chert |
| 36 | Coterra Energy INC | 6,006 | 3,830 | 587 | 606 | NM, PA, OK, TX +1 | Avalon-Bone Spring |
| 37 | Denbury Onshore | 5,902 | 4,415 | 30 | 1,077 | MS, TX, WY, MT +3 | Austin Chalk |
| 38 | RJ Energy | 5,516 | 3,568 | 305 | 1,262 | KS, TX | Excello-Mulky |
| 39 | Texas Petroleum Investment Company | 5,345 | 4,834 | 16 | 362 | LA, TX, MS, AL +2 | Austin Chalk |
| 40 | Carbon Creek Energy | 5,317 | 5,249 | 0 | 63 | WY | Niobrara- Mowry |
| 41 | Permian Resources Operating LLC | 4,762 | 3,675 | 1,023 | 421 | TX, NM | Avalon-Bone Spring |
| 42 | Bkv Barnett LLC | 4,436 | 4,385 | 51 | 15 | TX | Barnett |
| 43 | Colt Energy | 4,338 | 2,110 | 132 | 1,064 | KS, MO, MS, LA | Excello-Mulky |
| 44 | Blackbeard Operating | 4,261 | 3,599 | 330 | 247 | TX, OK, NM, AR | Thirty-one Carbonate-Chert |
| 45 | Whiting Petroleum CORP | 4,190 | 2,592 | 64 | 487 | ND, CO, TX, OK +10 | Bakken |
| 46 | Lance Oil & Gas | 4,093 | 2,334 | 0 | 285 | WY, TX, NM, CO +2 | Niobrara- Mowry |
| 47 | Waggoner Operating,LLC | 3,992 | 3,810 | 91 | 105 | TX | Barnett |
| 48 | Sm Energy Company | 3,920 | 2,867 | 279 | 414 | TX, UT, WY, OK +8 | Austin Chalk |
| 49 | Contango Resources Company | 3,906 | 3,162 | 1 | 515 | WY, OK, TX, NM +2 | Niobrara- Mowry |
| 50 | Two P Partners LLC | 3,890 | 3,323 | 0 | 397 | TX | Thirty-one Carbonate-Chert |
| 51 | Hess Corporation | 3,890 | 1,221 | 1 | 1,308 | ND, TX, KS, CA +18 | Bakken |
| 52 | Wold Energy Partners | 3,778 | 52 | 0 | 44 | WY, CO, UT, NE +2 | Niobrara- Mowry |
| 53 | PureWest Resources | 3,772 | 3,530 | 112 | 74 | WY | Mesaverde-Lance |
| 54 | Large Operating LLC | 3,749 | 3,450 | 0 | 19 | TX | Granite Wash |
| 55 | Highmark Energy Operating | 3,687 | 3,412 | 386 | 242 | TX, LA, MS, OK | Cleveland |
| 56 | Crowheart Energy | 3,585 | 3,348 | 42 | 35 | WY, CO | Mesaverde-Lance-Lewis |
| 57 | Huber J M | 3,560 | 1,776 | 0 | 376 | WY, TX, CO, KS +7 | Niobrara- Mowry |
| 58 | Eiger Operating | 3,555 | 3,307 | 13 | 216 | KS | — |
| 59 | Atlas Operating | 3,506 | 3,192 | 40 | 212 | TX, KS, OK, NM +1 | Eagle Ford |
| 60 | Extex Operating Company | 3,467 | 3,301 | 1 | 96 | TX, LA, NM, AR +1 | Ozona Canyon |
| 61 | Lewis Petro Properties | 3,405 | 2,905 | 88 | 129 | TX | Olmos |
| 62 | Presidio Petroleum | 3,356 | 3,229 | 2 | 100 | TX, OK, ND, LA +6 | Granite Wash |
| 63 | Murfin Drilling | 3,327 | 1,679 | 43 | 1,329 | KS, CO, ND, SD +2 | Niobrara East |
| 64 | SandRidge Energy | 3,309 | 2,171 | 16 | 503 | OK, KS, TX, NM +3 | Woodford |
| 65 | Berexco | 3,262 | 2,381 | 37 | 589 | KS, NE, OK, TX +2 | Niobrara East |
| 66 | R2q Operating | 3,241 | 3,011 | 9 | 113 | TX, OK | Barnett |
| 67 | Jonah Energy | 3,158 | 2,693 | 148 | 136 | WY, NM, TX, CO | Mesaverde-Lance |
| 68 | American Warrior | 3,064 | 1,692 | 24 | 919 | KS, OK | Niobrara East |
| 69 | Unbridled Resources LLC | 2,939 | 2,848 | 0 | 83 | TX, OK | Granite Wash |
| 70 | Mack Energy | 2,919 | 1,314 | 48 | 740 | OK, NM, WY, KS +3 | Woodford |
| 71 | Hess Bakken Investments Ii | 2,902 | 2,515 | 268 | 171 | ND | Bakken |
| 72 | Eagleridge Operating | 2,883 | 2,817 | 3 | 51 | TX, UT | Barnett |
| 73 | Atlantic Richfield Company | 2,847 | 139 | 0 | 954 | TX, OK, WY, CA +15 | Travis Peak |
| 74 | Stephens & Johnson Operating Company | 2,842 | 2,122 | 7 | 449 | OK, TX, NM, MT +3 | Woodford |
| 75 | Coterra Energy | 2,783 | 961 | 142 | 650 | NM, TX, OK, LA +16 | Avalon-Bone Spring |
| 76 | Ring Energy | 2,715 | 2,314 | 93 | 177 | TX, KS, NM | Thirty-one Carbonate-Chert |
| 77 | Matador Production Company | 2,656 | 1,517 | 724 | 170 | NM, TX, LA, WY | Avalon-Bone Spring |
| 78 | Vess Oil | 2,649 | 1,926 | 0 | 538 | KS, TX, OK | Niobrara East |
| 79 | Kerr Mcgee Oil & Gas Onshore | 2,644 | 315 | 0 | 309 | UT, TX, LA, OK +8 | Mesaverde-Wasatch |
| 80 | Ritchie Exploration | 2,641 | 1,667 | 16 | 851 | KS, WV, CO, TX +7 | Niobrara East |
| 81 | Magnolia Oil & Gas Operating | 2,594 | 2,416 | 143 | 76 | TX | Austin Chalk |
| 82 | Oasis Petroleum North America | 2,448 | 1,925 | 163 | 179 | ND, MT, TX | Bakken |
| 83 | Breitburn Operating | 2,410 | 1,239 | 0 | 741 | OK, WY, MI, NM +7 | Woodford |
| 84 | Hunt Oil Company | 2,402 | 832 | 77 | 1,151 | LA, TX, ND, KS +17 | Austin Chalk |
| 85 | Unit Petroleum Company | 2,398 | 1,484 | 3 | 663 | OK, TX, AL, KS +8 | Woodford |
| 86 | Fasken Oil And Ranch | 2,342 | 1,888 | 154 | 180 | TX, NM, NV | Austin Chalk |
| 87 | Cabot Oil & Gas | 2,316 | 605 | 0 | 650 | WV, OK, WY, TX +15 | Marcellus |
| 88 | W & T Offshore | 2,307 | 912 | 0 | 1,345 | LA, TX, AL | Tuscaloosa |
| 89 | Maverick Permian LLC | 2,278 | 2,121 | 1 | 87 | TX, NM | Thirty-one Carbonate-Chert |
| 90 | Grayrock Energy Ii LLC | 2,270 | 2,114 | 0 | 87 | TX | Barnett |
| 91 | Bridwell Oil Company | 2,221 | 1,081 | 10 | 430 | TX, OK, LA, NM +3 | Barnett |
| 92 | Wildfire Energy Operating LLC | 2,216 | 2,129 | 65 | 65 | TX | Austin Chalk |
| 93 | Southwest Royalties | 2,185 | 1,932 | 0 | 91 | NM, TX, AL | Morrow |
| 94 | Trinity Operating Usg | 2,182 | 1,919 | 20 | 129 | OK, TX, LA | Woodford-Caney |
| 95 | Slawson Exploration | 2,153 | 860 | 46 | 774 | ND, KS, OK, TX +5 | Bakken |
| 96 | Discovery Natural Resources | 2,144 | 1,978 | 89 | 81 | TX, KS, UT, OK | Ozona Canyon |
| 97 | Aghorn Operating | 2,131 | 2,072 | 1 | 24 | TX, NM | Thirty-one Carbonate-Chert |
| 98 | Bkv North Texas LLC | 2,096 | 2,075 | 11 | 15 | TX | Barnett |
| 99 | Exco Resources PA | 2,093 | 530 | 2 | 176 | PA, WV, OK, TX +8 | Marcellus |
| 100 | Cross Timbers Energy | 2,072 | 1,826 | 8 | 76 | TX, NM, OK, WY +5 | Thirty-one Carbonate-Chert |
Download this leaderboard (CSV, CC BY 4.0) · JSON API
Source: State oil & gas regulator well-header records — every well filed with each state's regulator, aggregated nationally per operator-of-record.
Ranking: Total US wells operated. Producing wells have a first-production date on file; recent permits cover the trailing 24 months; DUCs are spudded but not yet producing. Related corporate entities are rolled up where a single operator page covers them.
Why it matters: The operator behind your wells determines drilling pace, upkeep, and the reliability of royalty payments. National scale is a strong proxy for financial strength and staying power.
Refresh cadence: Monthly. Data as of 2026-07-03. Free to cite with attribution (CC BY 4.0).
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States: Texas · Oklahoma · New Mexico · North Dakota · Colorado · Wyoming · California · Kansas · Mississippi · Utah · Montana · Ohio · Illinois
Basins: Permian · Anadarko · Williston (Bakken) · DJ · Powder River · San Joaquin · East Texas · Arkla (Haynesville) · Illinois Basin · Michigan · Bend Arch / Fort Worth
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Operators ranked: 100
Combined wells: 948,585
Permits (24mo): 29,054
Last refresh: 2026-07-03
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