OPERATORS · EVERY NUMBER ON RECORD
Every operator on record
Every operator number the permit record or the wellbore file has ever named, active or not. Names are the P-5 registration names; a company that reorganized can appear under several numbers.About operator numbers →
78,233 OPERATORS · PAGE 1 OF 783
| Operator | Permits on file | Permits, 12 mo | Wells of record | Producing | First permit | Last permit | Top county, 12 mo |
|---|---|---|---|---|---|---|---|
| Youngblood, C. S. III 257097 | 19,549 | 0 | 6,104 | 0 | 1977 | Apr 13, 2000 | — |
| EOG Res, Inc 253162 | 16,339 | 311 | 8,433 | 4,722 | 1992 | Oct 20, 2026 | Webb |
| XTO Engy Inc 945936 | 16,153 | 22 | 6,604 | 2,031 | 1992 | Oct 26, 2026 | Martin |
| Pioneer Natural Res. USA, Inc 665748 | 15,616 | 717 | 16,278 | 5,248 | 1990 | Oct 22, 2026 | Midland |
| Parkway Petro, Inc 147715 | 13,061 | 0 | 585 | 0 | 1990 | Sep 21, 2022 | — |
| APC Oper Partnership 27200 | 9,740 | 215 | 7,186 | 2,410 | 1977 | Oct 8, 2026 | Upton |
| Texaco E & P Inc 148113 | 9,285 | 85 | 3,923 | 928 | 1977 | Oct 27, 2026 | Midland |
| Pennzenergy Exp. & Prod., L.L.C 216378 | 9,266 | 72 | 2,885 | 959 | 1977 | Sep 2, 2026 | DE Witt |
| Texaco Inc 20425 | 7,201 | 0 | 1,700 | 0 | 1977 | Jul 25, 2003 | — |
| Superior Oil Co, The 572550 | 6,763 | 0 | 1,163 | 0 | 1977 | Dec 13, 2010 | — |
| Occidental Permian Ltd 617544 | 6,251 | 118 | 10,930 | 2,868 | 1995 | Oct 7, 2026 | Yoakum |
| Endeavor Engy Res L.P 251726 | 6,190 | 0 | 1,797 | 0 | 1997 | Feb 6, 2025 | — |
| Union Pacific Res Co 876645 | 5,638 | 0 | 694 | 0 | 1979 | Feb 27, 2001 | — |
| Diamondback E&P LLC 217012 | 5,229 | 729 | 11,735 | 5,929 | 2007 | Oct 27, 2026 | Midland |
| Burlington Res O & G Co LP 109333 | 5,129 | 160 | 2,276 | 1,583 | 2000 | Oct 23, 2026 | DE Witt |
| Texaco Inc 844110 | 4,906 | 0 | 2,588 | 0 | 1977 | May 2, 1991 | — |
| Conoco Inc 172230 | 4,644 | 0 | 902 | 0 | 1977 | Sep 5, 2003 | — |
| COG Oper LLC 166150 | 4,568 | 134 | 4,467 | 1,956 | 2004 | Oct 20, 2026 | Upton |
| Anadarko E&P Onshore LLC 20528 | 4,556 | 171 | 2,054 | 1,371 | 2010 | Sep 21, 2026 | Loving |
| Gulf Oil Corp 338130 | 4,382 | 0 | 821 | 0 | 1977 | Aug 6, 1985 | — |
| Energen Res Corp 252002 | 4,291 | 0 | 135 | 0 | 1997 | Jul 2, 2019 | — |
| Mitchell Engy Corp 570655 | 4,224 | 0 | 1,162 | 0 | 1977 | Apr 3, 2001 | — |
| Lakewood Oper, Ltd 20572 | 4,004 | 0 | 603 | 0 | 1978 | Mar 27, 2013 | — |
| Silver Oil & Gas Inc 222282 | 3,810 | 0 | 158 | 0 | 1998 | Jul 17, 2008 | — |
| Marathon Oil Co 525380 | 3,707 | 0 | 762 | 0 | 1977 | Apr 30, 2020 | — |
| Sandridge Expl. and Prod., LLC 748011 | 3,454 | 0 | 175 | 1 | 1995 | Nov 4, 2014 | — |
| Hilcorp Engy Co 386310 | 3,452 | 83 | 20,779 | 7,856 | 1989 | Oct 20, 2026 | Freestone |
| Texaco E & P Inc 844118 | 3,332 | 0 | 1,380 | 0 | 1980 | Oct 3, 2002 | — |
| OXY USA Inc 630591 | 3,314 | 151 | 2,554 | 617 | 1983 | Oct 13, 2026 | Gaines |
| Conocophillips Co 172232 | 3,290 | 19 | 2,363 | 150 | 1997 | Aug 27, 2026 | Reeves |
| Crownquest Oper, LLC 191554 | 3,231 | 0 | 85 | 12 | 1995 | Jul 23, 2024 | — |
| TXO Prod Corp 875230 | 3,227 | 0 | 674 | 0 | 1977 | Dec 6, 1990 | — |
| Marathon Oil EF LLC 525398 | 3,190 | 68 | 3,133 | 2,309 | 2010 | Oct 27, 2026 | Karnes |
| Encana Oil & Gas(usa) Inc 251691 | 3,078 | 0 | 193 | 0 | 2001 | Feb 5, 2020 | — |
| Arco Oil & Gas Co.-Silsbee 29340 | 3,065 | 0 | 1,041 | 0 | 1977 | May 26, 1994 | — |
| Lewis Petro Properties, Inc 499978 | 3,006 | 59 | 2,881 | 2,171 | 1981 | Oct 26, 2026 | Webb |
| HNG Fossil Fuels Co 253196 | 2,825 | 0 | 313 | 0 | 1977 | Oct 28, 1999 | — |
| Anadarko E&P Co LP 20542 | 2,635 | 0 | 291 | 0 | 1982 | Jan 25, 2013 | — |
| Kinder Morgan Prod Co LLC 463316 | 2,631 | 77 | 5,279 | 994 | 2003 | Oct 20, 2026 | Scurry |
| Phillips Petro Co 663680 | 2,544 | 0 | 1,268 | 0 | 1977 | Jul 16, 2003 | — |
| Shell Western E&P Inc 774720 | 2,528 | 0 | 501 | 0 | 1983 | Mar 7, 2000 | — |
| SM Engy Co 788997 | 2,485 | 91 | 2,271 | 1,038 | 2001 | Oct 27, 2026 | Webb |
| Parsley Engy Operations, LLC 642652 | 2,477 | 0 | 224 | 0 | 2009 | Jan 14, 2021 | — |
| Union Oil Co of California 876520 | 2,336 | 0 | 619 | 0 | 1977 | Jun 26, 2019 | — |
| OXY USA WTP LP 630555 | 2,289 | 40 | 2,977 | 766 | 2000 | Oct 26, 2026 | Gaines |
| Blackbeard Oper, LLC 73056 | 2,255 | 117 | 3,383 | 949 | 2009 | Oct 13, 2026 | Crane |
| Whiting Oil and Gas Corp 920478 | 2,092 | 0 | 309 | 0 | 2000 | Mar 6, 2015 | — |
| Cimarex Engy Co 153438 | 2,082 | 14 | 169 | 0 | 1978 | Dec 30, 2025 | Culberson |
| Mewbourne Oil Co 562560 | 2,059 | 89 | 1,435 | 1,031 | 1977 | Oct 27, 2026 | Reeves |
| Fasken Oil and Ranch, Ltd 263696 | 2,057 | 87 | 1,672 | 1,077 | 1996 | Sep 29, 2026 | Andrews |
| Forest Oil Corp 275740 | 1,861 | 0 | 326 | 0 | 1977 | Jan 21, 2015 | — |
| Laredo Petro, Inc 486610 | 1,795 | 0 | 95 | 0 | 2006 | Apr 25, 2023 | — |
| Quicksilver Res Inc 684830 | 1,778 | 0 | 58 | 0 | 2001 | Apr 9, 2015 | — |
| Shell Western E&P 774719 | 1,756 | 0 | 244 | 0 | 1992 | Oct 20, 2021 | — |
| Thompson, J. Cleo 855610 | 1,739 | 0 | 284 | 0 | 1977 | Mar 25, 2021 | — |
| Dreyfus, Louis Natural Gas Corp 228125 | 1,709 | 0 | 167 | 0 | 1984 | Nov 30, 2001 | — |
| Midland Oil and Gas, Inc 479574 | 1,705 | 26 | 1,115 | 133 | 1985 | Oct 8, 2026 | Taylor |
| Range Prod Co 691703 | 1,666 | 0 | 208 | 0 | 1994 | Jun 9, 2014 | — |
| Chesapeake Oper, L.L.C 147699 | 1,645 | 0 | 311 | 0 | 2010 | May 11, 2023 | — |
| Samson Lone Star LP 744700 | 1,644 | 0 | 111 | 0 | 1982 | Jul 6, 2007 | — |
| Sanchez-O'Brien Oil & Gas Corp 627127 | 1,627 | 0 | 660 | 0 | 1978 | Feb 10, 1999 | — |
| BP America Prod Co 40798 | 1,623 | 0 | 707 | 0 | 1996 | Jan 13, 2020 | — |
| Quintana Pet. Corp 685610 | 1,589 | 0 | 198 | 0 | 1977 | Dec 13, 2000 | — |
| BPX Oper Co 85408 | 1,575 | 110 | 1,974 | 1,547 | 2010 | Oct 20, 2026 | Reeves |
| Getty Oil Co 302450 | 1,564 | 0 | 449 | 0 | 1977 | Oct 18, 1989 | — |
| Coastal Oil & Gas Corp 161639 | 1,543 | 0 | 174 | 0 | 1979 | Jul 16, 2001 | — |
| EP Engy E&P Co, L.P 253385 | 1,518 | 0 | 74 | 0 | 2011 | Apr 28, 2022 | — |
| Mobil Oil Corp 572500 | 1,487 | 0 | 688 | 0 | 1977 | Feb 13, 1991 | — |
| Union Hill Drilling Co 416330 | 1,472 | 0 | 417 | 1 | 1977 | Jul 9, 2020 | — |
| Murphy Expl. & Prod. Co. - USA 594675 | 1,458 | 28 | 977 | 893 | 2010 | Sep 11, 2026 | Dimmit |
| Parker & Parsley Dev L.P 640886 | 1,422 | 0 | 198 | 0 | 1983 | Sep 26, 1997 | — |
| Linn Oper, Inc 501545 | 1,401 | 0 | 214 | 0 | 2006 | Feb 21, 2017 | — |
| Shell Western E&P Inc 773840 | 1,401 | 0 | 955 | 0 | 1977 | Mar 30, 2015 | — |
| Ovintiv USA Inc 628658 | 1,385 | 207 | 3,060 | 1,250 | 2013 | Oct 22, 2026 | Martin |
| Texas Oil & Gas Corp 846860 | 1,344 | 0 | 796 | 0 | 1977 | Mar 29, 1982 | — |
| Petrohawk Oper Co 660146 | 1,334 | 0 | 27 | 0 | 2004 | Jul 22, 2013 | — |
| Fina Oil & Chemical Co 268321 | 1,328 | 0 | 225 | 0 | 1981 | Jan 4, 2001 | — |
| Texas Pacific Oil Co, Inc 829432 | 1,326 | 0 | 494 | 0 | 1977 | Sep 29, 1988 | — |
| Amoco Prod Co 20430 | 1,295 | 0 | 129 | 0 | 1977 | Aug 20, 1987 | — |
| Samson Lone Star, LLC 744737 | 1,290 | 0 | 246 | 0 | 2003 | Dec 1, 2016 | — |
| Sun Expl. & Prod. Co.-Houston 829435 | 1,290 | 0 | 836 | 0 | 1978 | Oct 4, 1988 | — |
| BHP Billiton Pet(txla OP) Co 68596 | 1,287 | 0 | 25 | 0 | 2010 | Jul 29, 2019 | — |
| Sun Expl. & Prod. Co.-Midland 829430 | 1,284 | 0 | 1,127 | 0 | 1977 | Jul 26, 1989 | — |
| Enervest Oper, L.L.C 252131 | 1,249 | 1 | 309 | 0 | 1995 | Mar 6, 2026 | Hemphill |
| Callon Petro Oper Co 124828 | 1,234 | 0 | 94 | 0 | 1998 | Jun 5, 2024 | — |
| Surge Oper, LLC 760725 | 1,228 | 64 | 1,295 | 782 | 2014 | Oct 9, 2026 | Howard |
| Exxon Mobil Corp 257128 | 1,223 | 0 | 1,521 | 0 | 1999 | Feb 13, 2018 | — |
| Rosetta Res Oper LP 728883 | 1,218 | 8 | 680 | 357 | 2005 | Oct 20, 2026 | Webb |
| Henry Res LLC 378535 | 1,197 | 0 | 58 | 7 | 2008 | Sep 11, 2023 | — |
| Carrizo Oil & Gas, Inc 135401 | 1,194 | 0 | 76 | 0 | 1994 | Sep 12, 2013 | — |
| Highmount Expl & Prod Texas LLC 385842 | 1,184 | 0 | 269 | 0 | 1992 | May 20, 2014 | — |
| Penn Virginia Oil & Gas, L.P 651780 | 1,157 | 0 | 43 | 0 | 2004 | Dec 14, 2022 | — |
| Bridwell Oil Co 92480 | 1,144 | 5 | 1,442 | 231 | 1977 | May 18, 2026 | Archer |
| Williams, Clayton Engy, Inc 924624 | 1,139 | 0 | 200 | 0 | 1993 | May 5, 2017 | — |
| Cox, John L 185980 | 1,123 | 0 | 591 | 0 | 1977 | May 14, 2003 | — |
| HNG Oil Co 341494 | 1,121 | 0 | 328 | 0 | 1977 | Jan 30, 1987 | — |
| IP Petro Co, Inc 425801 | 1,112 | 0 | 23 | 0 | 1987 | Aug 9, 2000 | — |
| Unit Petro Co 877099 | 1,100 | 0 | 591 | 101 | 1988 | Dec 2, 2024 | — |
| Mariner Engy, Inc 526155 | 1,098 | 0 | 56 | 0 | 1987 | Dec 2, 2010 | — |
| Henry Petro LP 378642 | 1,091 | 0 | 48 | 0 | 2000 | Feb 12, 2009 | — |
WINDOWS ON THE RRC ISSUE DATE · REBUILT DAILY, LAST OCT 29, 2026
About this data
Operator numbers and names from the RRC P-5 organization report, refreshed weekly; permit counts and dates from the OGA049M master and daily daf420 files; wells of record from the EWA wellbore schedule. Summary figures are rebuilt nightly.
New to these records? operator numbers and the P-5
Developers: this page as JSON is GET /v1/data/operators/tx, documented in the API reference.