WELL · 42-371-31875 · DISTRICT 8
Sibley Unit #6I
Pecos County · Four C (Clear Fork) field · Vertical
Sibley Unit #6I (API 42-371-31875) is a well in Pecos County operated by Four C Oil & Gas Corp., completed June 15, 1978.
The RRC has issued 2 drilling permits between 1977 and 1994, permitted to 4,200 ft.
It was permitted by Warren, Joe H. and has since transferred to Four C Oil & Gas Corp. on the wellbore schedule.
Completion filings report 5 formation tops, including Yates, Grayburg, San Andres, Glorieta.
Its 2 leases have reported 1.25M barrels of oil and 35.7K mcf of gas since January 1993, last reporting in July 2026. The leases carry 39 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 51.1K barrels injected in the 12 months reported through May 2025.
Operator of record
Permitted by Warren, Joe H.; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Jan 5, 2024 · 141 permits on file · (214) 534-0306
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Four C Oil & Gas Corp. |
| Production reports | Saguaro Petroleum, LLCthrough Mar 2026 |
| Latest permit | Warren, Joe H.Apr 18, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,200
- total depth, ft
- 2
- permits on file
- Apr 18, 1994
- last permit issued
- Jun 15, 1978
- completed
- 1.25M
- cumulative oil, bbl
- 35.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 15, 1978
- 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 2 leases this well is completed on; they carry 39 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Four C San Andres Unit O-10-34031 | Four C (San Andres) | Saguaro Petroleum, LLC | 38 | 1.25M | 35.7K | Nov 1993 – Jul 2026 |
| Sibley Unit G-10-77311 | Four C (Clear Fork) | Four C Oil & Gas Corp. | 1 | 0 | 0 | Jan 1993 – Mar 1994 |
Oil, barrels lease total
Last 12 months 18,381 · prior 12 21,279(-14%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Warren, Joe H.Nov 1993 → Oct 2001
- 2Four C Oil & Gas Corp.Nov 2001 → Apr 2023
- 3Saguaro Petroleum, LLCMay 2023 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 422960-99 | Recompletion | Warren, Joe H. | Apr 13, 1994 | Apr 18, 1994 | Mar 24, 1994 | 2,450 |
| 6217-99 | Drill | Four C Oil & Gas Corp. | Nov 2, 1977 | Nov 2, 1977 | Oct 8, 1977 | 4,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-77311 | — | — | — | — |
| — | — O-10-34031 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,364 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,150 | 1,214 |
| Grayburg | 2,032 | 332 |
| San Andres | 2,316 | 48 |
| GlorietaGLORIETTA | 2,940 | -576 |
| Tubb | 3,609 | -1,245 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,324 | 2,362 | Perforated |
| 3,732 | 3,887 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 604 | 11 | 400 S |
| 5.5 | 4,026 | 7.875 | 800 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 | Nov 20, 2024 | Aug 27, 2024 | — |
| 00 | Jul 8, 1994 | Apr 6, 1994 | — |
| 00 | May 16, 1994 | — | — |
| 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 42-371-31875 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-31875 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 51.1K
- bbl, last 12 reported months
- 2.44M
- bbl, all reported
- May 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000080584 | H-1 Injection | Active | 500 | 1,000 | 2,318–2,364 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 51,080 · prior 12 38,230(+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/37131875, documented in the API reference.