O Brien Drilling
Operator of record for 45 catalogued wells across 1 state. Every well below links to its full registry page.
At a glance
O Brien Drilling is the operator of record for 45 catalogued U.S. oil & gas wells in 1 state. None is listed as active, 44 (98%) are plugged & abandoned. Its largest concentration is in Louisiana, with 45 wells (100% of its portfolio).
Wells operated
45
Active
0
Plugged
44
Orphaned
0
Portfolio by state
| State | Wells |
|---|---|
| Louisiana | 45 |
Well mix
- Oil wells
- 6
- Gas wells
- 1
- Shut-in
- 0
- Active share
- 0%
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Claim O Brien Drilling to keep this portfolio accurate — verified operators can correct well statuses and add plugging documentation.
Claim your operator profileWhere does O Brien Drilling operate?
O Brien Drilling's catalogued wells are spread across 1 state: Louisiana (45). Its 45 Louisiana wells are 0.0% of the 225,728 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 O Brien Drilling’s wells are active, plugged or orphaned?
0% of O Brien Drilling's catalogued wells are active, 29 percentage points below the national share of 29%. 98% are plugged & abandoned, against 47% nationally. None of the wells filed under this name is flagged as orphaned.
What kinds of wells does O Brien Drilling operate?
By product class, 6 (13%) are oil wells and 1 (2%) gas wells; nationally the shares are 43% and 17%. The deepest of its wells with a published depth is Atlantic - Sinclair 001 in Beauregard, LA at 8,310 ft. The wells listed below sit in Beauregard (LA), Concordia (LA) and Catahoula (LA).
Notable wells operated by O Brien Drilling
| Well | API # / state ID | Status | Type | Location | Operator | Depth |
|---|---|---|---|---|---|---|
| Atlantic - Sinclair 001 | 17-011-20035 | Plugged & abandoned | Other type | Beauregard, LA | O'Brien Drilling Company | 8,310 ft |
| Pecanty 001 | 17-029-01973 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,819 ft |
| Macneil 001 | 17-029-01557 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,812 ft |
| Madison Oil & Dev Co 001 | 17-029-01393 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,810 ft |
| R V Harper 001 | 17-029-01966 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,809 ft |
| C-5 Suvv;mamie Lee 002 | 17-029-01962 | Plugged & abandoned | Oil | Concordia, LA | O'Brien Drilling Company | 6,800 ft |
| Mary Bullis Ferris 001 | 17-029-01935 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,758 ft |
| Mrs Faye S Davie Unit 001 | 17-029-01959 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,714 ft |
| Tur Sukk;c Harper 002 | 17-029-01937 | Plugged & abandoned | Oil | Concordia, LA | O'Brien Drilling Company | 6,713 ft |
| Tradewell 001 | 17-025-01482 | Plugged & abandoned | Other type | Catahoula, LA | O'Brien Drilling Company | 6,711 ft |
| Francis Holland 001 | 17-029-01960 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,710 ft |
| E Fairbanks 015-9 | 17-029-01934 | Plugged & abandoned | Other type | Concordia, LA | O'Brien Drilling Company | 6,706 ft |
Deepest first where depth is published. See all 45 wells →
Frequently asked questions
How many wells does O Brien Drilling operate?
O Brien Drilling is the operator of record for 45 catalogued oil & gas wells, with the largest concentration in Louisiana (45). Only wells in states WellCensus has ingested are counted.
How many of O Brien Drilling's wells are still active?
0 of O Brien Drilling's catalogued wells are active; 44 are plugged & abandoned.
In which states does O Brien Drilling operate wells?
O Brien Drilling is the operator of record for wells in Louisiana (45).
Does O Brien Drilling operate mostly oil or gas wells?
6 of O Brien Drilling's catalogued wells are oil wells and 1 are gas wells; the rest are injection, service or unclassified wells.
What is O Brien Drilling's deepest well?
Among wells with a published depth, Atlantic - Sinclair 001 in Beauregard, LA is the deepest at 8,310 ft.
Where O Brien Drilling'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, “O Brien Drilling — well portfolio”, https://wellcensus.com/operators/o-brien-drilling-79759 (data as of October 10, 2026).
Dataset updated . Operator portfolios are resolved from raw state registry filings (exact-normalized names; subsidiaries stay separate).