Sentinel Oil
Operator of record for 13 catalogued wells across 2 states. Every well below links to its full registry page.
Filed as: SENTINEL OIL COMPANY INC · Sentinel Oil Co.
At a glance
Sentinel Oil is the operator of record for 13 catalogued U.S. oil & gas wells in 2 states. None is listed as active, 10 (77%) are plugged & abandoned and 3 flagged as orphaned. Its largest concentration is in California, with 9 wells (69% of its portfolio).
Wells operated
13
Active
0
Plugged
10
Orphaned
3
Portfolio by state
| State | Wells |
|---|---|
| California | 9 |
| Wyoming | 4 |
Well mix
- Oil wells
- 12
- Gas wells
- 0
- Shut-in
- 0
- Active share
- 0%
Is this your company?
Claim Sentinel Oil to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does Sentinel Oil operate?
Sentinel Oil's catalogued wells are spread across 2 states: California (9) and Wyoming (4). Its 9 California wells are 0.0% of the 242,471 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 Sentinel Oil’s wells are active, plugged or orphaned?
0% of Sentinel Oil's catalogued wells are active, 29 percentage points below the national share of 29%. 77% are plugged & abandoned, against 47% nationally. 3 wells filed under this name are flagged as orphaned — unplugged, with no operator able to plug them.
What kinds of wells does Sentinel Oil operate?
By product class, 12 (92%) 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 Govt 1 in Johnson, WY at 7,096 ft. The wells listed below sit in Johnson (WY), Park (WY), Carbon (WY), Los Angeles (CA) and Kern (CA). 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 Sentinel Oil
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Govt 1 | 49-019-05991 | Plugged & abandoned | Oil | Johnson, WY | Sentinel Oil Company Inc | 7,096 ft |
| Govt 1 | 49-029-05773 | Plugged & abandoned | Oil | Park, WY | Sentinel Oil Company Inc | 2,278 ft |
| Govt 1-X | 49-029-05774 | Plugged & abandoned | Oil | Park, WY | Sentinel Oil Company Inc | 2,278 ft |
| Johnson 1 | 49-007-05575 | Plugged & abandoned | Oil | Carbon, WY | Sentinel Oil Company Inc | 1,487 ft |
| Young 1 | 04-037-17809 | Plugged & abandoned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Sentinel 3 | 04-037-10516 | Plugged & abandoned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Athens 1 | 04-037-07642 | Plugged & abandoned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Sentinel 2 | 04-037-10515 | Plugged & abandoned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Lease by Sentinel Oil Co. 1 | 04-037-05859 | Orphaned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Athens 2 | 04-037-14404 | Orphaned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Hunter 1 | 04-037-17808 | Orphaned | Oil | Los Angeles, CA | Sentinel Oil Co. | — |
| Sentinel 1 | 04-029-36602 | Plugged & abandoned | Other type | Kern, CA | Sentinel Oil Co. | — |
Deepest first where depth is published. See all 13 wells →
Frequently asked questions
How many wells does Sentinel Oil operate?
Sentinel Oil is the operator of record for 13 catalogued oil & gas wells, with the largest concentration in California (9). Only wells in states WellCensus has ingested are counted.
How many of Sentinel Oil's wells are still active?
0 of Sentinel Oil's catalogued wells are active; 10 are plugged & abandoned and 3 are flagged as orphaned.
In which states does Sentinel Oil operate wells?
Sentinel Oil is the operator of record for wells in California (9) and Wyoming (4).
Does Sentinel Oil operate mostly oil or gas wells?
12 of Sentinel Oil's catalogued wells are oil wells and 0 are gas wells; the rest are injection, service or unclassified wells.
What is Sentinel Oil's deepest well?
Among wells with a published depth, Govt 1 in Johnson, WY is the deepest at 7,096 ft.
Where Sentinel 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, “Sentinel Oil — well portfolio”, https://wellcensus.com/operators/sentinel-oil-5512 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).