TEXAS · WELLS · COCHRAN COUNTY · MASTEN "C" LEASE · API 42-079-33062 · DISTRICT 7B
Masten C #12
Cochran County · Levelland field · Shut In · Vertical
Masten C #12 (API 42-079-33062) is a well in Cochran County operated by R2q Operating LLC, completed March 19, 2004 and listed as shut in on the RRC schedule, shut in November 1, 2015.
The RRC has issued one drilling permit, issued February 13, 2004, permitted to 5,004 ft.
It was permitted by Walsh Petroleum, Inc. and has since transferred to R2q Operating LLC on the wellbore schedule.
Completion filings report one formation top, including San Andres.
Its lease has reported 438K barrels of oil and 579K mcf of gas since February 1993, last reporting volume in April 2026. The lease carries 18 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Walsh Petroleum, Inc.; the EWA schedule now lists a different operator.
- Based in
- Iowa Park, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Sep 12, 2025
- Permits on file
- 38
- Phone
- (940) 228-1500
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | R2Q Operating LLC |
| Production reports | Extex Operating Companythrough Apr 2026 |
| Latest permit | Walsh Petroleum, Inc.Feb 13, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,004
- total depth, ft
- 1
- permits on file
- Feb 13, 2004
- last permit issued
- Mar 19, 2004
- completed
- 438K
- cumulative oil, bbl
- 579K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 1993 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 19, 2004
- Shut in
- Nov 1, 2015
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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; they carry 18 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Masten "C" O-11-66961 | Levelland | Extex Operating Company | 18 | 438K | 579K | Feb 1993 – Apr 2026 |
Oil, barrels lease total
Last 12 months 1,524 · prior 12 1,945(-22%)
Gas, mcf lease total
Last 12 months 521 · prior 12 331(+57%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Parker & Parsley, Wpi AgentFeb 1993 → Oct 1997
- 2Walsh Petroleum, Inc.Nov 1997 → Dec 2022
- 3Extex Operating CompanyJan 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 542021-99 | Drill | Walsh Petroleum, Inc. | Feb 13, 2004 | Feb 13, 2004 | Mar 6, 2004 | 5,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 19, 2004 | Masten C O-11-66961 | Levelland | R2Q Operating LLC | Shut In · shut in Nov 1, 2015 | 5,004 |
Formation tops
As filed on W-2/G-1. Subsea from 3,847 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 4,850 | -1,003 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,580 | 4,878 | Perforated |
| 4,910 | 4,938 | Perforated |
| 4,972 | 4,994 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 432 | 12.25 | 300 S |
| 4.5 | 5,004 | 7.875 | 1,400 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jan 14, 2005 | Jul 26, 2004 | Yes |
| 00 | Sep 8, 2004 | — | — |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-079-33062 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-079-33062 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/07933062, documented in the API reference.