Foster Oil
Operator of record for 15 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: FOSTER OIL CO · Foster Oil LLC
At a glance
Foster Oil is the operator of record for 15 catalogued U.S. oil & gas wells in 2 states. 9 (60%) are active, 0 (0%) plugged & abandoned. Its largest concentration is in Kansas, with 9 wells (60% of its portfolio).
Wells operated
15
Active
9
Plugged
0
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Kansas | 9 |
| Kentucky | 6 |
Well mix
- Oil wells
- 7
- Gas wells
- 0
- Shut-in
- 1
- Active share
- 60%
Is this your company?
Claim Foster Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Foster Oil operate?
Foster Oil's catalogued wells are spread across 2 states: Kansas (9) and Kentucky (6). Its 6 Kentucky wells are 0.0% of the 201,022 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 Foster Oil’s wells are active, plugged or orphaned?
60% of Foster Oil's catalogued wells are active, 31 percentage points above the national share of 29%. 0% are plugged & abandoned, against 47% nationally. 1 wells (7%) are shut-in — unplugged but idle. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does Foster Oil operate?
By product class, 7 (47%) are oil wells and 0 (0%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is McClay 13 in Rooks, KS at 3,700 ft. The wells listed below sit in Rooks (KS), Osborne (KS), Estill (KY) and Ohio (KY). State filings spell the name 2 ways; WellCensus merges exact-normalized spellings only, so subsidiaries and affiliates keep their own pages.
Notable wells operated by Foster Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| McClay 13 | 15-163-23967 | Active | Injection | Rooks, KS | Foster Oil LLC | 3,700 ft |
| Abby Marie 1-33 | 15-141-20399 | Active | Oil | Osborne, KS | Foster Oil LLC | 3,620 ft |
| Vallette 5 | 15-163-24352 | Active | Oil | Rooks, KS | Foster Oil LLC | 3,550 ft |
| Dora Smith 6 | 15-163-22746 | Active | Injection | Rooks, KS | Foster Oil LLC | 3,535 ft |
| McClay 11 | 15-163-23296 | Active | Oil | Rooks, KS | Foster Oil LLC | 3,527 ft |
| McClay 6 | 15-163-22862 | Active | Oil | Rooks, KS | Foster Oil LLC | 3,525 ft |
| Smith, Dora 5 | 15-163-22673 | Shut-in | Injection | Rooks, KS | Foster Oil LLC | 3,520 ft |
| Smith, Dora 4 | 15-163-22621 | Active | Oil | Rooks, KS | Foster Oil LLC | 3,520 ft |
| McClay 9 | 15-163-23290 | Active | Oil | Rooks, KS | Foster Oil LLC | 3,498 ft |
| Alexander, W A 16 | KGS record 2013214 | Other status | Other type | Estill, KY | Foster Oil Co | 523 ft |
| Powers, R B 1 | KGS record 2036698 | Active | Oil | Ohio, KY | Foster Oil Co | 452 ft |
| Alexander, W A 15 | KGS record 2013213 | Other status | Other type | Estill, KY | Foster Oil Co | 449 ft |
Deepest first where depth is published. See all 15 wells →
Frequently asked questions
How many wells does Foster Oil operate?
Foster Oil is the operator of record for 15 catalogued oil & gas wells, with the largest concentration in Kansas (9). Only wells in states WellCensus has ingested are counted.
How many of Foster Oil's wells are still active?
9 of Foster Oil's catalogued wells are active; 0 are plugged & abandoned.
In which states does Foster Oil operate wells?
Foster Oil is the operator of record for wells in Kansas (9) and Kentucky (6).
Does Foster Oil operate mostly oil or gas wells?
7 of Foster Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Foster Oil's deepest well?
Among wells with a published depth, McClay 13 in Rooks, KS is the deepest at 3,700 ft.
Where Foster Oil's wells are
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, “Foster Oil — well portfolio”, https://wellcensus.com/operators/foster-oil-101205 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).