WELL · 42-391-30427 · DISTRICT 2
Obrien J. M. #66
Refugio County · Greta (4400) field · Vertical
Obrien J. M. #66 (API 42-391-30427) is a plugged well in Refugio County, plugged November 20, 2012, last operated by Sun Expl. & Prod. CO.-Houston.
The RRC has issued 3 drilling permits between 1993 and 2009, permitted to 4,522 ft.
It was permitted by Cambrian Management, Ltd. and has since transferred to Sun Expl. & Prod. CO.-Houston on the wellbore schedule.
Completion filings report 2 formation tops, including Greta, Catahoula.
Operator of record
Permitted by Cambrian Management, Ltd.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y · 483 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sun Expl. & Prod. Co.-Houston |
| Production reports | Cambrian Management, Ltd.through Apr 2009 |
| Latest permit | Cambrian Management, Ltd.Jun 8, 2009 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,522
- total depth, ft
- 3
- permits on file
- Jun 8, 2009
- last permit issued
- —
- completed
- 0
- cumulative oil, bbl
- 156K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Nov 2012
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- Shut in
- —
- Plugged
- Nov 20, 2012
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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| J.M. O'Brien G-2-255148 | Greta (L- 3) | Acock/Anaqua Operating Co., LP | 1 | 0 | 0 | Jun 2009 – Nov 2012 |
| O'Brien, J. M. G-2-245451 | Greta (L-10) | Cambrian Management, Ltd. | 1 | 0 | 13.6K | Jan 2009 – Jun 2009 |
| O'Brien, J. M. G-2-144764 | Greta (O-6) | Cambrian Management, Ltd. | 1 | 0 | 143K | Jan 1993 – Jan 2009 |
| Obrien, J. M. G-2-66659 | Greta (4400) | Dewbre Petroleum Corporation | 1 | 0 | 0 | Jan 1993 – Jan 1993 |
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 → Dec 2002
- 3Cambrian Management, Ltd.Jan 2009 → Apr 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 681863-99 | Recompletion | Cambrian Management, Ltd. | Jun 4, 2009 | Jun 8, 2009 | Jun 8, 2009 | 4,522 |
| 675803-99 | Recompletion | Cambrian Management, Ltd. | Dec 3, 2008 | Jan 14, 2009 | Jan 19, 2009 | 4,522 |
| 406958-99 | Recompletion | Dewbre Petroleum Corporation | Dec 14, 1992 | Jan 20, 1993 | Jan 20, 1993 | 4,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-66659 | — | — | — | — |
| — | — G-2-144764 | — | — | — | — |
| — | — G-2-245451 | — | — | — | — |
| — | — G-2-255148 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 66 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,819 | 1,836 | Perforated |
| 2,340 | 2,344 | Perforated |
| 3,229 | 3,233 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 16 | 326 | 20 | 380 S |
| 16 | 326 | — | — |
| 9.625 | 1,304 | 14.75 | 900 S |
| 9.625 | 1,304 | — | — |
| 5.5 | 4,514 | 8.75 | 917 S |
| 5.5 | 4,514 | — | — |
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 | Jun 12, 2010 | Aug 31, 2009 | Yes |
| 00 | Mar 25, 2010 | — | — |
| 00 | Mar 26, 2009 | Feb 2, 2009 | Yes |
| 00 | Mar 7, 2009 | — | — |
| 00 | Jun 11, 1993 | Jan 28, 1993 | Yes |
| 00 | Apr 22, 1993 | — | — |
| 00 | Jan 12, 1984 | Jun 24, 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 42-391-30427 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-30427 → 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/39130427, documented in the API reference.