O Brien Sill
Operator of record for 23 catalogued wells across 1 state. Every well below links to its full registry page.
Wells operated
23
Active
9
Plugged
13
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| California | 23 |
Well mix
- Oil wells
- 22
- Gas wells
- 0
- Shut-in
- 1
- Active share
- 39%
Is this your company?
Claim O Brien Sill to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileNotable wells operated by O Brien Sill
| Well | API # | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Lease by O'Brien-Sill 1 | 04-029-38930 | Shut-in | Other type | Kern, CA | O'Brien-Sill | — |
| O'Brien 6 | 04-029-38942 | Plugged & abandoned | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 10 | 04-029-38946 | Active | Oil | Kern, CA | O'Brien-Sill | — |
| Hart-Dearin 1 | 04-029-38935 | Plugged & abandoned | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 2 | 04-029-38938 | Active | Oil | Kern, CA | O'Brien-Sill | — |
| Hart-Dearin 3 | 04-029-63948 | Active | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 8 | 04-029-38944 | Active | Oil | Kern, CA | O'Brien-Sill | — |
| Hart-Dearin 2 | 04-029-38936 | Active | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 3 | 04-029-38939 | Plugged & abandoned | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 5 | 04-029-38941 | Plugged & abandoned | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 4 | 04-029-38940 | Plugged & abandoned | Oil | Kern, CA | O'Brien-Sill | — |
| O'Brien 7 | 04-029-38943 | Active | Oil | Kern, CA | O'Brien-Sill | — |
Deepest first where depth is published; find any well via search.
Frequently asked questions
How many wells does O Brien Sill operate?
O Brien Sill is the operator of record for 23 catalogued oil & gas wells, with the largest concentration in California (23). Only wells in states WellCensus has ingested are counted.
How many of O Brien Sill's wells are still active?
9 of O Brien Sill's catalogued wells are active; 13 are plugged & abandoned.
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).