Oil and gas wells by state
2,790,349 well records from 20 state agencies, plus the deeper Texas and New Mexico records. Every figure below is the state's own — nothing is estimated, and a state that files no operator or no coordinate shows a gap rather than a guess.
Deep records
Two states where the site holds far more than a well register — leases, production, operators, permits, and for Texas the survey grid and the county appraisal rolls.
| State | What the site holds |
|---|---|
| Texas | Wells, leases, monthly production, operators, permits, fields, the Original Land Survey grid and mineral ownership |
| New Mexico | 141,700 wells with their full monthly production series |
Well registers
One page per wellbore, from each agency's own register. The last three columns say what that agency files: a blank is a field the state does not publish, not a field we failed to read.
| State | Wells | Counties | With operator | With location |
|---|---|---|---|---|
| Kansas | 517,763 | 92 | 100% | 99% |
| Oklahoma | 456,478 | 78 | 100% | 97% |
| Louisiana | 247,255 | 64 | 99% | 99% |
| California | 242,522 | 59 | 100% | 100% |
| Ohio | 242,293 | 88 | 99% | 100% |
| Pennsylvania | 224,422 | 57 | 99% | 99% |
| Kentucky | 161,800 | 121 | 99% | 99% |
| Colorado | 124,361 | 56 | 100% | 100% |
| Wyoming | 120,846 | — | 0% | 0% |
| West Virginia | 114,090 | 53 | 100% | 80% |
| Michigan | 92,567 | 83 | 100% | 100% |
| New York | 47,437 | 56 | 89% | 98% |
| Montana | 42,019 | — | 100% | 100% |
| Utah | 40,287 | 29 | 100% | 100% |
| Arkansas | 30,593 | 68 | 100% | 100% |
| Mississippi | 25,274 | — | 0% | 0% |
| Nebraska | 22,608 | 91 | 100% | 100% |
| Alabama | 19,320 | 59 | 100% | 97% |
| Tennessee | 16,278 | 86 | 99% | 99% |
| South Dakota | 2,136 | 50 | 99% | 100% |
Every record here comes from a free state agency feed. Nothing on this site is bought. Where a state publishes two well layers — Pennsylvania files conventional and unconventional separately — both are included and the page says which one a well came from.