WELL · 42-329-10023 · DISTRICT 8
Sandefur R.J. #1
Midland County · Azalea (Devonian) field · Vertical
Sandefur R.J. #1 (API 42-329-10023) is a plugged well in Midland County, plugged March 20, 1998, last operated by Texaco E & P Inc..
The RRC has issued one drilling permit, issued July 8, 2002, permitted to 12,000 ft.
It was permitted by Endeavor Energy Resources L.P. and has since transferred to Texaco E & P Inc. on the wellbore schedule.
Completion filings report 5 formation tops, including Spraberry, Dean, Wolfcamp, Strawn.
Its 4 leases have reported 96.4K barrels of oil and 131K mcf of gas since January 1993, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Endeavor Energy Resources L.P.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Oct 4, 2025 · 3,332 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Texaco E & P Inc. |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Endeavor Energy Resources L.P.Jul 8, 2002 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 1
- permits on file
- Jul 8, 2002
- last permit issued
- Apr 5, 1963
- completed
- 96.4K
- cumulative oil, bbl
- 131K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 5, 1963
- Shut in
- —
- Plugged
- Mar 20, 1998
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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sandefur "37" O-10-36993 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 95.4K | 122K | Nov 2002 – Jul 2026 |
| Sandefur, R. J. O-10-34791 | Azalea (Devonian) | McFarland & Scobey, Inc. | 1 | 990 | 2.65K | Dec 1995 – May 1998 |
| Sandefur, R. J. G-10-145289 | Azalea (Devonian) | McFarland & Scobey, Inc. | 1 | 0 | 4.99K | Apr 1993 – Feb 1996 |
| Sandefur,r.j. O-10-24624 | Azalea (Devonian) | Texaco E & P Inc. | 1 | 2 | 1.26K | Jan 1993 – Jan 1995 |
Oil, barrels lease total
Last 12 months 3,068 · prior 12 3,415(-10%)
Gas, mcf lease total
Last 12 months 2,969 · prior 12 3,424(-13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Texaco E & P Inc.Jan 1993 → Dec 1993
- 2Altman Energy, Inc.Jan 1994 → Sep 1994
- 3McFarland & Scobey, Inc.Oct 1994 → Apr 1997
- 4Endeavor Energy Resources L.P.Nov 2002 → Dec 2024
- 5Diamondback E&P LLCJan 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 521659-99 | Reenter | Endeavor Energy Resources L.P. | Jul 8, 2002 | Jul 8, 2002 | Aug 1, 2002 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-145289 | — | — | — | — |
| — | — O-10-24624 | — | — | — | — |
| — | — O-10-34791 | — | — | — | — |
| — | — O-10-36993 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,760 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,553 | 9,777 | Perforated |
| 11,612 | 11,622 | Perforated |
| 11,612 | 11,651 | Perforated |
| 11,632 | 11,651 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 1,801 | — | 350 S |
| 11.75 | 1,817 | 15 | 950 S |
| 11 | 1,817 | — | — |
| 7 | 6,735 | 8.75 | 875 S |
| 4.5 | 9,258 | 7 | 685 S |
| 7 | 9,424 | — | 875 S |
| 7 | 9,435 | — | — |
| 2.375 | 10,566 | — | — |
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 | Mar 11, 2003 | Dec 6, 2002 | Yes |
| 00 | Feb 11, 2003 | — | — |
| 00 | Feb 21, 1996 | Jan 2, 1996 | — |
| 00 | Jan 18, 1996 | — | — |
| 00 | Aug 18, 1993 | May 5, 1993 | — |
| 00 | Jun 2, 1993 | — | — |
| 00 | Jan 12, 1984 | Apr 18, 1963 | — |
| 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 42-329-10023 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-10023 → 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/32910023, documented in the API reference.