WELL · 42-003-05235 · DISTRICT 8
Lockhart #12
Andrews County · Martin (McKee) field · Vertical
Lockhart #12 (API 42-003-05235) is a well in Andrews County operated by Winn Operating LLC, completed January 16, 1977.
The RRC has issued 2 drilling permits between 1991 and 1995, permitted to 8,848 ft.
It was permitted by Cross Timbers Operating Company and has since transferred to Winn Operating LLC on the wellbore schedule.
Completion filings report 6 formation tops, including Glorieta, Clear Fork, Tubb, Wichita-Albany.
Its 3 leases have reported 622K barrels of oil and 6.59M mcf of gas since January 1993, last reporting in July 2026. The leases carry 29 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cross Timbers Operating Company; the EWA schedule now lists a different operator.
Kilgore, TX · P-5 Y, filed Oct 4, 2025 · 1 permits on file · (281) 783-8866
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Winn Operating LLC |
| Production reports | Winn Operating, LLCthrough Apr 2026 |
| Latest permit | Cross Timbers Operating CompanyNov 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.
- 8,848
- total depth, ft
- 2
- permits on file
- Nov 21, 1995
- last permit issued
- Jan 16, 1977
- completed
- 622K
- cumulative oil, bbl
- 6.59M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 16, 1977
- 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 3 leases this well is completed on; they carry 29 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Lockhart O-10-4084 | Martin (McKee) | Winn Operating, LLC | 4 | 134K | 48.5K | Jan 1993 – Jul 2026 |
| Lockhart O-10-40005 | Martin (Consolidated) | Winn Operating, LLC | 14 | 149K | 676K | Jun 2010 – Jul 2026 |
| Lockhart O-10-26353 | Martin (Clear Fork) | Huntington Energy, L.L.C. | 11 | 339K | 5.86M | Jan 1993 – Feb 2011 |
Oil, barrels lease total
Last 12 months 8,381 · prior 12 6,753(+24%)
Gas, mcf lease total
Last 12 months 19,817 · prior 12 13,539(+46%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cross Timbers Operating CompanyJan 1993 → May 2000
- 2Huntington Energy, L.L.C.Jun 2000 → Nov 2012
- 3Saber Oil & Gas Ventures, LLCDec 2012 → Feb 2018
- 4Mammoth Exploration LLCMar 2018 → May 2022
- 5Winn Operating, LLCJun 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 440488-99 | Recompletion | Cross Timbers Operating Company | Oct 3, 1995 | Nov 21, 1995 | Mar 24, 1996 | 7,200 |
| 386205-99 | Recompletion | Cross Timbers Production Company | Mar 28, 1991 | Apr 23, 1991 | May 24, 1991 | 8,848 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-4084 | — | — | — | — |
| — | — O-10-26353 | — | — | — | — |
| — | — O-10-40005 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,283 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| GlorietaGLORIETTA | 5,292 | -2,009 |
| Clear ForkCLEARFORK | 5,577 | -2,294 |
| Tubb | 6,170 | -2,887 |
| Wichita-AlbanyWICHITA | 6,734 | -3,451 |
| McKee | 8,318 | -5,035 |
| Ellenburger | 8,655 | -5,372 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,726 | 5,876 | Perforated |
| 6,246 | 6,510 | Perforated |
| 6,806 | 7,203 | Perforated |
| 8,323 | 8,396 | Perforated |
| 8,526 | 8,546 | Perforated |
| 8,596 | 8,614 | Perforated |
| — | 8,392 | Perforated |
| — | 8,400 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 295 | 17.25 | 400 S |
| 8.625 | 3,753 | 11 | 3,600 S |
| 2.375 | 8,406 | — | — |
| 5.5 | 8,661 | 7.875 | 1,000 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 | Jan 20, 2011 | Mar 29, 1996 | — |
| 00 | Jun 26, 1996 | Mar 29, 1996 | — |
| 00 | Jul 16, 1991 | Jun 19, 1991 | Yes |
| 00 | Jul 5, 1991 | Aug 3, 1987 | — |
| 00 | Aug 27, 1987 | Aug 3, 1987 | — |
| 00 | Aug 15, 1987 | — | — |
| 00 | Jan 12, 1984 | Aug 10, 1978 | — |
| 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 42-003-05235 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-05235 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 21.8K
- bbl, last 12 reported months
- 148K
- bbl, all reported
- Jun 1985
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000017359 | H-1 Injection | Canceled May 17, 1989 | 0 | 0 | 0–0 |
MONTHLY INJECTED, BBL · H-10 · LAST 16 REPORTED MONTHS
Last 12 months 64,054
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/00305235, documented in the API reference.