U.S. oil & gas wells
4,159,397 catalogued wellbores, state by state, from 23 state regulator registries — the largest free well registry in America. States without a registry ingest yet carry the federal documented-orphaned-wells overlay only.
Dataset updated . Derived from public data sources.
By state
| State | Wells | Active | Plugged | Orphans | Coverage |
|---|---|---|---|---|---|
| Texas | 964,375 | 343,268 | 403,530 | 5,854 | Location index (attributes coming) |
| Kansas | 474,051 | 100,797 | 262,480 | 11,468 | Full state registry |
| Oklahoma | 456,077 | 130,315 | 246,131 | 24,965 | Full state registry |
| California | 242,471 | 54,361 | 145,487 | 3,338 | Full state registry |
| Ohio | 242,049 | 82,042 | 106,034 | 24,569 | Full state registry |
| Louisiana | 225,721 | 28,688 | 143,158 | 15,369 | Full state registry |
| Pennsylvania | 224,189 | 101,804 | 55,459 | 31,846 | Full state registry |
| Kentucky | 193,973 | 54,578 | 78,748 | 13,034 | Full state registry |
| Illinois | 174,493 | 34,120 | 106,923 | 8,478 | Full state registry |
| New Mexico | 141,088 | 54,451 | 51,016 | 652 | Full state registry |
| Wyoming | 129,955 | 22,644 | 66,324 | 1,323 | Full state registry |
| Colorado | 124,327 | 37,061 | 55,121 | 409 | Full state registry |
| West Virginia | 118,569 | 60,217 | 25,679 | 14,124 | Full state registry |
| Michigan | 85,673 | 14,403 | 14,109 | 510 | Full state registry |
| Indiana | 78,832 | 8,273 | 65,457 | 1,066 | Orphan overlay only |
| New York | 46,514 | 11,534 | 20,325 | 7,029 | Full state registry |
| North Dakota | 43,680 | 20,632 | 13,021 | 953 | Full state registry |
| Montana | 42,009 | 9,759 | 25,408 | 438 | Full state registry |
| Utah | 40,139 | 13,632 | 10,026 | 72 | Full state registry |
| Mississippi | 34,924 | 5,723 | 24,566 | 545 | Full state registry |
| Arkansas | 33,791 | 16,739 | 14,775 | 413 | Full state registry |
| Nebraska | 22,021 | 2,186 | 16,987 | 479 | Location index (attributes coming) |
| Alabama | 15,091 | 5,505 | 8,670 | 49 | Full state registry |
| Missouri | 4,892 | 0 | 0 | 4,892 | Orphan overlay only |
| Tennessee | 481 | 0 | 0 | 481 | Orphan overlay only |
| Alaska | 12 | 0 | 0 | 12 | Orphan overlay only |
The full US universe is ~3 million drilled wells across 30+ producing states. Texas and Nebraska are ingested as location indexes while their full-attribute files land — per-state sources and caveats in the methodology.
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