WELL · 42-165-38276 · DISTRICT 8
Cox 20 #1
Gaines County · Tex-Mex SE. (Wichita Albany) field · Shut IN · Vertical
Cox 20 #1 (API 42-165-38276) is a well in Gaines County operated by Ciervo Resources Asset Hldg LLC, completed February 17, 2015 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit, issued December 4, 2014, permitted to 7,950 ft.
It was permitted by Triumph Exploration, Inc. and has since transferred to Ciervo Resources Asset Hldg LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Seven Rivers, Queen, San Andres.
Its lease has reported 535 barrels of oil and 3.76K mcf of gas since February 2015, last reporting in July 2026.
Operator of record
Ciervo Resources Asset Hldg LLC
Permitted by Triumph Exploration, Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Jan 4, 2026 · (832) 563-3001
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ciervo Resources Asset Hldg LLC |
| Production reports | Triumph Exploration, Inc.through Sep 2015 |
| Latest permit | Triumph Exploration, Inc.Dec 4, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,950
- total depth, ft
- 1
- permits on file
- Dec 4, 2014
- last permit issued
- Feb 17, 2015
- completed
- 535
- cumulative oil, bbl
- 3.76K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 17, 2015
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Delinquent
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Cox 20 O-11-70308 | Tex-Mex, SE. (Wichita Albany) | Ciervo Resources Asset Hldg, LLC | 1 | 535 | 3.76K | Feb 2015 – Jul 2026 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Triumph Exploration, Inc.Mar 2015 → Sep 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 801128-99 | Drill | Triumph Exploration, Inc. | Dec 3, 2014 | Dec 4, 2014 | Jan 6, 2015 | 7,950 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-70308 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,500 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YatesYATES - OVERPRESSURE, INERT GAS | 2,915 | 585 |
| Seven Rivers | 3,432 | 68 |
| Queen | 3,760 | -260 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD | 4,438 | -938 |
| Glorieta | 5,795 | -2,295 |
| Clear ForkCLEARFORK | 6,200 | -2,700 |
| San Angelo | 6,760 | -3,260 |
| Wichita-AlbanyWICHITA ALBANY | 7,355 | -3,855 |
| Leonard | — | — |
| Spraberry | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,045 | 7,193 | Perforated |
| 7,045 | 7,195 | Perforated |
| 7,541 | 7,690 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,770 | 12.25 | 930 S |
| 5.5 | 7,800 | 7.875 | 925 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 | Apr 28, 2016 | Apr 13, 2016 | Yes |
| 00 | May 5, 2015 | Apr 15, 2015 | Yes |
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 42-165-38276 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-165-38276 → 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.
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/16538276, documented in the API reference.