WELL · 42-391-01881 · DISTRICT 2
Oconnor Mary Ellen -B- #B11
Refugio County · Mary Ellen Oconnor (5000) field · Vertical
Oconnor Mary Ellen -B- #B11 (API 42-391-01881) is a plugged well in Refugio County, plugged March 15, 1991, last operated by Exxon Corp..
The RRC has issued 3 drilling permits (amended once) between 1979 and 1995, permitted to 6,600 ft.
It was permitted by Emerald Oil & Gas LC and has since transferred to Exxon Corp. on the wellbore schedule.
Completion filings report 4 formation tops, including Lagarto, Oakville, Catahoula, Frio.
Its 3 leases have reported 192K barrels of oil and 561K mcf of gas since October 1993, last reporting in July 2026. The leases carry 17 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Emerald Oil & Gas LC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 3, 2003 · 19,549 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Exxon Corp. |
| Production reports | Emerald Oil & Gas LCthrough Nov 2015 |
| Latest permit | Emerald Oil & Gas LCJul 21, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,600
- total depth, ft
- 4
- permits on file
- Jul 21, 1995
- last permit issued
- Apr 7, 1979
- completed
- 192K
- cumulative oil, bbl
- 561K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 7, 1979
- Shut in
- —
- Plugged
- Mar 15, 1991
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 3 leases this well is completed on; they carry 17 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| O'Connor, Mary Ellen O-2-7933 | Mary Ellen Oconnor (FS-75) | O'Connor Energy Management, LLC | 16 | 192K | 500K | Oct 1993 – Jul 2026 |
| Oconnor, Mary Ellen - Exxon G-2-164716 | Mary Ellen Oconnor (5000) | Emerald Oil & Gas LC | 1 | 0 | 61.7K | Apr 1997 – May 2006 |
| — G-2-82614 | — | — | 0 | 0 | 0 | — |
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.
- 1Pace West Production LCOct 1993 → Mar 1994
- 2Emerald Oil & Gas LCApr 1994 → Nov 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 438124-99 | Recompletion | Emerald Oil & Gas LC | Jul 21, 1995 | Jul 21, 1995 | Mar 28, 1997 | 6,600 |
| 418788-98 | Reenter | Emerald Oil & Gas LC | Jun 2, 1994 | Nov 30, 1993 | Apr 6, 1994 | 6,600 |
| 418788-99 | Reenter | Pace West Production LC | Nov 30, 1993 | Nov 30, 1993 | — | 6,600 |
| 43004-99 | Other | Exxon Corp. | Feb 22, 1979 | Feb 22, 1979 | — | 6,202 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-82614 | — | — | — | — |
| — | — G-2-164716 | — | — | — | — |
| — | — O-2-7933 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 12 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,961 | 4,972 | Perforated |
| 5,270 | 5,289 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,305 | — | — |
| 9.625 | 1,319 | 12.25 | — |
| 9.625 | 1,319 | — | — |
| 2.375 | 4,919 | — | — |
| 5.5 | 6,148 | — | — |
| 5.5 | 6,160 | 7.875 | — |
| 5.5 | 6,160 | — | — |
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 | Dec 11, 1997 | Apr 14, 1997 | Yes |
| 00 | Oct 13, 1997 | — | — |
| 00 | Aug 9, 1994 | May 27, 1994 | — |
| 00 | Jul 11, 1994 | — | — |
| 00 | Jan 12, 1984 | Jun 7, 1979 | — |
| 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 42-391-01881 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-391-01881 → 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/39101881, documented in the API reference.