Carter Oil
Operator of record for 2,966 catalogued wells across 10 states. Every well below links to its full registry page.
Filed as: CARTER OIL · CARTER OIL CO · CARTER OIL CO. · CARTER OIL COMPANY · …
At a glance
Carter Oil is the operator of record for 2,966 catalogued U.S. oil & gas wells in 10 states. 324 (11%) are active, 1,119 (38%) plugged & abandoned and 14 flagged as orphaned. Its largest concentration is in Michigan, with 1,319 wells (44% of its portfolio).
Wells operated
2,966
Active
324
Plugged
1,119
Orphaned
14
Portfolio by state
| State | Wells |
|---|---|
| Michigan | 1,319 |
| Illinois | 629 |
| Kentucky | 615 |
| Montana | 115 |
| Wyoming | 109 |
| Mississippi | 75 |
| Colorado | 40 |
| North Dakota | 31 |
| Utah | 21 |
| Arkansas | 12 |
Well mix
- Oil wells
- 845
- Gas wells
- 37
- Shut-in
- 0
- Active share
- 11%
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Claim your operator profileWhere does Carter Oil operate?
Carter Oil's catalogued wells are spread across 10 states: Michigan (1,319), Illinois (629), Kentucky (615), Montana (115) and Wyoming (109) and 5 more. Its 1,319 Michigan wells are 2% of the 85,673 catalogued in that state — its largest share of any state. Counts cover only states whose registries WellCensus has ingested with operator names; wells in Nebraska and Texas (location indexes) and in states without a registry ingest are not yet attributed to any operator.
How many of Carter Oil’s wells are active, plugged or orphaned?
11% of Carter Oil's catalogued wells are active, 18 percentage points below the national share of 29%. 38% are plugged & abandoned, against 47% nationally. 14 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Carter Oil operate?
By product class, 845 (28%) are oil wells and 37 (1%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Unit 1 in Lincoln, WY at 14,397 ft. The wells listed below sit in Lincoln (WY), Converse (WY), Hinds (MS), Carbon (MT), Carbon (WY) and Big Horn (WY) and other counties. State filings spell the name 7 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Carter Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Unit 1 | 49-023-05183 | Plugged & abandoned | Oil | Lincoln, WY | Carter Oil Company | 14,397 ft |
| Neiman 1 | 49-009-05541 | Plugged & abandoned | Oil | Converse, WY | Carter Oil Company | 14,032 ft |
| Mattie Harvey 1 1 | 23-049-00067 | Plugged & abandoned | Other type | Hinds, MS | Carter Oil Co. | 12,480 ft |
| Opal Unit 1 | 49-023-05064 | Plugged & abandoned | Oil | Lincoln, WY | Carter Oil Company | 12,366 ft |
| Govt Wheatley 1 | 25-009-05118 | Plugged & abandoned | Gas | Carbon, MT | Carter Oil Co. | 12,185 ft |
| Creston Unit A-1 | 49-007-05209 | Plugged & abandoned | Gas | Carbon, WY | Carter Oil Company | 12,006 ft |
| Five Mile 1 | 49-003-05148 | Plugged & abandoned | Oil | Big Horn, WY | Carter Oil Company | 11,940 ft |
| Unit Cole 1 | 49-009-05482 | Plugged & abandoned | Oil | Converse, WY | Carter Oil Company | 11,818 ft |
| 1 Anna P Olson | 05-081-05355 | Plugged & abandoned | Other type | Moffat, CO | Carter Oil Co | 11,445 ft |
| Thomas Yellowface 1 | 33-053-00426 | Plugged & abandoned | Oil | Mckenzie, ND | Carter Oil Co. | 11,405 ft |
| Edward Lockwood Jr. 1 | 33-025-00001 | Plugged & abandoned | Oil | Dunn, ND | Carter Oil Co. | 11,105 ft |
| Dallas D. Moore 1 | 33-023-00024 | Plugged & abandoned | Oil | Divide, ND | Carter Oil Co. | 11,040 ft |
Deepest first where depth is published. See all 2,966 wells →
Frequently asked questions
How many wells does Carter Oil operate?
Carter Oil is the operator of record for 2,966 catalogued oil & gas wells, with the largest concentration in Michigan (1,319). Only wells in states WellCensus has ingested are counted.
How many of Carter Oil's wells are still active?
324 of Carter Oil's catalogued wells are active; 1,119 are plugged & abandoned and 14 are flagged as orphaned.
In which states does Carter Oil operate wells?
Carter Oil is the operator of record for wells in Michigan (1,319), Illinois (629), Kentucky (615), Montana (115), Wyoming (109), Mississippi (75), Colorado (40), North Dakota (31), Utah (21) and Arkansas (12).
Does Carter Oil operate mostly oil or gas wells?
845 of Carter Oil's catalogued wells are oil wells and 37 are gas wells; the rest are injection, service or unclassified wells.
What is Carter Oil's deepest well?
Among wells with a published depth, Unit 1 in Lincoln, WY is the deepest at 14,397 ft.
Where Carter Oil's wells are
- Oil & gas wells in Michigan· 1,319 operated by Carter Oil
- Oil & gas wells in Illinois· 629 operated by Carter Oil
- Oil & gas wells in Kentucky· 615 operated by Carter Oil
- Oil & gas wells in Montana· 115 operated by Carter Oil
- Oil & gas wells in Wyoming· 109 operated by Carter Oil
- Oil & gas wells in Mississippi· 75 operated by Carter Oil
- Largest U.S. well operators
- All well operators
About this data
Source: State oil & gas regulator registries (operator of record as filed, exact-normalized across states) plus the USGS United States Documented Orphaned Well Database (2026), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Carter Oil — well portfolio”, https://wellcensus.com/operators/carter-oil-2972 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).