WELL · 42-079-32221 · DISTRICT 8
Masten #5
Cochran County · Levelland field · Injection · Vertical
Masten #5 (API 42-079-32221) is a well in Cochran County operated by Joplin Oil CO. Inc., completed December 10, 1987 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued January 21, 1986, permitted to 5,100 ft.
It was permitted by Rogers, S. K. Oil CO. and has since transferred to Joplin Oil CO. Inc. on the wellbore schedule.
Completion filings report one formation top, including San Andres.
Its lease has reported 71.4K barrels of oil and 44K mcf of gas since January 1993, last reporting in July 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 29.8K barrels injected in the 12 months reported through February 2026.
Operator of record
Permitted by Rogers, S. K. Oil Co.; the EWA schedule now lists a different operator.
Lubbock, TX · P-5 Y, filed Jun 4, 2026 · 2 permits on file · (806) 891-8031
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Joplin Oil Co. Inc. |
| Production reports | Joplin Oil Co., Inc.through Apr 2026 |
| Latest permit | Rogers, S. K. Oil Co.Jan 21, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,100
- total depth, ft
- 1
- permits on file
- Jan 21, 1986
- last permit issued
- Dec 10, 1987
- completed
- 71.4K
- cumulative oil, bbl
- 44K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 10, 1987
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Masten O-11-65143 | Levelland | Joplin Oil Co., Inc. | 8 | 71.4K | 44K | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1 · prior 12 0
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Rogers, S. K. Oil, Inc.Jan 1993 → Jun 2014
- 2Joplin Oil Co., Inc.Jul 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 295880-99 | Drill | Rogers, S. K. Oil Co. | Jan 9, 1986 | Jan 21, 1986 | — | 5,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-65143 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,816 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San AndresSAN ANDRES ZONE P-1 | 4,988 | -1,172 |
| San AndresSAN ANDRES ZONE P-2 | 5,049 | -1,233 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,988 | 5,018 | Perforated |
| 4,998 | 5,018 | Perforated |
| 5,049 | 5,072 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 410 | 12.25 | 275 S |
| 4.5 | 5,090 | 7.875 | 1,200 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 | Jun 2, 1988 | May 12, 1988 | — |
| 00 | May 5, 1986 | Apr 24, 1986 | Yes |
| 00 | May 2, 1986 | — | — |
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 42-079-32221 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-079-32221 → 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
- 29.8K
- bbl, last 12 reported months
- 1.45M
- bbl, all reported
- Feb 2026
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000065287 | H-1 Injection | Active | 300 | 2,000 | 4,988–5,072 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 29,849 · prior 12 29,850(0%)
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/07932221, documented in the API reference.