TEXAS · WELLS · COCHRAN COUNTY · MALLET "C" LEASE · API 42-079-31027 · DISTRICT 7B
Mallet C #10
Cochran County · Slaughter field · Shut In · Vertical
Mallet C #10 (API 42-079-31027) is a well in Cochran County operated by Extex Operating Company, completed February 21, 1979 and listed as shut in on the RRC schedule, shut in September 1, 2022.
The RRC has issued one drilling permit, issued December 15, 1978, permitted to 5,200 ft.
It was permitted by Mobil Oil Corporation and has since transferred to Extex Operating Company on the wellbore schedule.
Its lease has reported 114K barrels of oil and 119K mcf of gas since January 1993, last reporting in July 2026. The lease carries 13 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Mobil Oil Corporation; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jan 7, 2026
- Permits on file
- 117
- Phone
- (713) 953-0824
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Extex Operating Company |
| Production reports | Extex Operating Companythrough Apr 2026 |
| Latest permit | Mobil Oil CorporationDec 15, 1978 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,200
- total depth, ft
- 1
- permits on file
- Dec 15, 1978
- last permit issued
- Feb 21, 1979
- completed
- 114K
- cumulative oil, bbl
- 119K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 21, 1979
- Shut in
- Sep 1, 2022
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mallet "C" O-11-5985 | Slaughter | Extex Operating Company | 13 | 114K | 119K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 19 · prior 12 9(+111%)
Gas, mcf lease total
Last 12 months 0 · prior 12 5(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Dec 1994
- 2Coda Energy, Inc.Jan 1995 → Aug 1998
- 3Belco Energy Corp.Sep 1998 → Feb 2002
- 4Westport Oil and Gas Company, LPMar 2002 → Nov 2005
- 5Encore Operating, L.P.Dec 2005 → Aug 2009
- 6Encore Energy Partners Oper LLCSep 2009 → Mar 2012
- 7Vanguard Permian, LLCApr 2012 → Apr 2015
- 8Vanguard Operating, LLCMay 2015 → Aug 2019
- 9Grizzly OP of Delaware, LLCSep 2019 → Apr 2020
- 10Extex Operating CompanyMay 2020 → Apr 2026
- 11New Horizon Resources LLCJan 2022 → May 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 38956-99 | Drill | Mobil Oil Corporation | Dec 15, 1978 | Dec 15, 1978 | Jan 28, 1979 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 21, 1979 | Mallet C O-11-5985 | Slaughter | Extex Operating Company | Shut In · shut in Sep 1, 2022 | 5,200 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,036 | 5,056 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 449 | 12.25 | 325 S |
| 2.375 | 5,094 | — | — |
| 5.5 | 5,200 | 7.875 | 1,600 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 12, 1984 | Mar 16, 1979 | — |
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 42-079-31027 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-079-31027 → 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/07931027, documented in the API reference.