U.S. oil & gas wells
4,166,704 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 | 964,593 | 337,510 | 403,327 | 8,998 | Location index (attributes coming) |
| Kansas | 473,140 | 100,797 | 262,480 | 10,557 | Full state registry |
| Oklahoma | 456,595 | 130,079 | 246,059 | 21,602 | Full state registry |
| California | 242,471 | 54,326 | 145,376 | 2,940 | Full state registry |
| Ohio | 242,052 | 82,042 | 106,030 | 23,415 | Full state registry |
| Louisiana | 225,728 | 28,688 | 143,152 | 14,233 | Full state registry |
| Pennsylvania | 224,189 | 101,804 | 55,427 | 27,259 | Full state registry |
| Kentucky | 201,022 | 53,467 | 78,591 | 15,977 | Full state registry |
| Illinois | 174,478 | 33,988 | 106,917 | 3,986 | Full state registry |
| New Mexico | 141,088 | 51,823 | 50,733 | 3,366 | Full state registry |
| Wyoming | 129,957 | 22,641 | 66,324 | 374 | Full state registry |
| Colorado | 124,327 | 36,549 | 55,091 | 1,302 | Full state registry |
| West Virginia | 118,569 | 60,217 | 25,679 | 13,894 | Full state registry |
| Michigan | 85,673 | 14,403 | 14,108 | 257 | Full state registry |
| Indiana | 78,257 | 8,273 | 65,457 | 946 | Orphan overlay only |
| New York | 46,514 | 11,534 | 20,323 | 7,600 | Full state registry |
| North Dakota | 43,680 | 20,537 | 12,679 | 562 | Full state registry |
| Montana | 42,011 | 9,758 | 25,398 | 272 | Full state registry |
| Utah | 40,139 | 13,632 | 10,026 | 90 | Full state registry |
| Mississippi | 34,924 | 5,719 | 24,566 | 525 | Full state registry |
| Arkansas | 33,791 | 16,737 | 14,740 | 379 | Full state registry |
| Nebraska | 22,021 | 2,177 | 16,969 | 32 | Location index (attributes coming) |
| Alabama | 15,091 | 5,505 | 8,661 | 30 | Full state registry |
| Missouri | 4,892 | 0 | 0 | 4,816 | Orphan overlay only |
| Tennessee | 989 | 0 | 0 | 895 | Orphan overlay only |
| Arizona | 459 | 0 | 0 | 459 | Orphan overlay only |
| Alaska | 48 | 0 | 0 | 44 | Orphan overlay only |
| Nevada | 6 | 0 | 0 | 6 | 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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