WELL · 42-079-00226 · DISTRICT 8
South Mallet Unit #312W
Cochran County · Vertical
South Mallet Unit #312W (API 42-079-00226) is a disposal or injection well in Cochran County operated by Sandridge Tertiary, LLC under an active UIC permit.
The RRC has issued 2 drilling permits between 1987 and 2008, permitted to 5,400 ft.
Completion filings report one formation top, including San Andres.
Its lease has reported 940K barrels of oil and 355K mcf of gas since January 1993, last reporting in July 2026. The lease carries 28 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 74.9K barrels injected in the 12 months reported through December 2025.
Operator of record
Midland, TX · P-5 Y, filed Jan 9, 2015 · 20 permits on file · (806) 255-2254
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | none |
| Production reports | Three Span Oil & Gas, Inc.through Apr 2026 |
| Latest permit | Sandridge Tertiary, LLCJun 11, 2008 |
- 5,400
- total depth, ft
- 2
- permits on file
- Jun 11, 2008
- last permit issued
- —
- completed
- 940K
- cumulative oil, bbl
- 355K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- —
- 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 lease this well is completed on; they carry 28 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mallet Land & Cattle Co. O-11-6086 | Slaughter | Three Span Oil & Gas, Inc. | 28 | 940K | 355K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 7,836 · prior 12 8,505(-8%)
Gas, mcf lease total
Last 12 months 10,024 · prior 12 11,728(-15%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Fina Oil & Chemical CompanyJan 1993 → Jul 1998
- 2BC Operating, Inc.Aug 1998 → Sep 1998
- 3Three Span Oil & Gas, Inc.Oct 1998 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 662290-99 | Recompletion | Sandridge Tertiary, LLC | May 19, 2008 | Jun 11, 2008 | — | 5,400 |
| 335315-99 | Recompletion | Tenneco Oil Co. | Aug 31, 1987 | Sep 2, 1987 | — | 5,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-6086 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,638 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 5,005 | -1,367 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,000 | 5,020 | Open hole |
| — | 5,000 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 258 | 14 | 135 S |
| 7 | 4,996 | 8.75 | 175 S |
| 4.5 | 5,094 | 6.125 | 280 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 | Oct 20, 2022 | Jun 16, 2022 | — |
| 00 | Jun 2, 1988 | May 2, 1988 | Yes |
| 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 42-079-00226 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-079-00226 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 74.9K
- bbl, last 12 reported months
- 4.52M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000064402 | H-1 Injection | Active | 1,000 | 2,495 | 4,990–5,094 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 74,857 · prior 12 56,018(+34%)
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/07900226, documented in the API reference.