WELL · 42-391-01055 · DISTRICT 2
O'Brien, J.M. #52
Refugio County · Vertical
O'Brien, J.M. #52 (API 42-391-01055) is a permitted well in Refugio County filed by Cambrian Management, Ltd.; no completion report is on file yet.
The RRC has issued 2 drilling permits between 1988 and 2009, permitted to 4,387 ft.
Completion filings report 2 formation tops, including L-4 Sand, L-13 Sand.
Operator of record
- Based in
- McCaulley, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 16, 2026
- Permits on file
- 107
- Phone
- (432) 664-7052
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Primrose Operating Companythrough May 2004 |
| Latest permit | Cambrian Management, Ltd.May 7, 2009 |
- 4,387
- total depth, ft
- 2
- permits on file
- May 7, 2009
- last permit issued
- —
- completed
- 0
- cumulative oil, bbl
- 16.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Mar 2017
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- —
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Obrien, J.M. G-2-127502 | Greta (L- 4) | Acock/Anaqua Operating Co., LP | 1 | 0 | 16.5K | Jan 1993 – Mar 2017 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Dewbre Petroleum CorporationJan 1993 → Oct 2002
- 2Primrose Operating CompanyNov 2002 → May 2004
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 680677-99 | Recompletion | Cambrian Management, Ltd. | Apr 23, 2009 | May 7, 2009 | — | 4,387 |
| 341678-99 | Recompletion | Sun Expl. & Prod. Co.-Corpus | Jan 21, 1988 | Feb 24, 1988 | — | 4,387 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-127502 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 66 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| L-4 Sand | 1,870 | -1,804 |
| L-13 Sand | 2,570 | -2,504 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,870 | 1,880 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 305 | 17.25 | — |
| 13.375 | 305 | — | — |
| 10.75 | 1,297 | 15 | — |
| 10.75 | 1,297 | — | — |
| 7 | 4,366 | 9.875 | 650 S |
| 7 | 4,366 | — | 650 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jul 6, 1988 | May 9, 1988 | Yes |
| 00 | Jul 1, 1988 | — | — |
| 00 | Jan 12, 1984 | Jun 4, 1975 | — |
| 00 | Jan 12, 1984 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-391-01055 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01055 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/39101055, documented in the API reference.