WELL · 42-317-31487 · DISTRICT 8
Baldwin Heirs #1
Martin County · RK (Devonian) field · Vertical
Baldwin Heirs #1 (API 42-317-31487) is a well in Martin County operated by Diamondback E&P LLC, completed February 20, 1976.
The RRC has issued one drilling permit, issued August 5, 2014, permitted to 12,000 ft.
It was permitted by R K Petroleum Corp. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Grayburg, San Andres.
Its 2 leases have reported 547K barrels of oil and 27.9K mcf of gas since January 1993, last reporting in July 2026. The leases carry 3 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by R K Petroleum Corp.; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,237 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | QEP Energy Companythrough May 2020 |
| Latest permit | R K Petroleum Corp.Aug 5, 2014 |
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
- Aug 5, 2014
- last permit issued
- Feb 20, 1976
- completed
- 547K
- cumulative oil, bbl
- 27.9K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 20, 1976
- 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 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Baldwin Heirs O-10-46482 | RK (Strawn) | Diamondback E&P LLC | 1 | 8.14K | 11 | Sep 2014 – Jul 2026 |
| Baldwin Heirs O-10-23957 | RK (Devonian) | Diamondback E&P LLC | 2 | 539K | 27.9K | Jan 1993 – Aug 2024 |
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.
- 1R K Petroleum Corp.Jan 1993 → Sep 2016
- 2QEP Energy CompanyOct 2016 → May 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 790886-99 | Recompletion | R K Petroleum Corp. | Jul 2, 2014 | Aug 5, 2014 | Jul 3, 2014 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-23957 | — | — | — | — |
| — | — O-10-46482 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,833 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,367 | 1,466 |
| Yates | 2,710 | 123 |
| Grayburg | 4,166 | -1,333 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,450 | -1,617 |
| Spraberry | 7,706 | -4,873 |
| Dean | 9,029 | -6,196 |
| Wolfcamp | 9,291 | -6,458 |
| Pennsylvanian | 10,096 | -7,263 |
| Cisco | — | — |
| Queen | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,704 | 10,826 | Perforated |
| — | 11,808 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 365 | 17.5 | 300 S |
| 5.5 | 1,824 | 7.875 | 350 S |
| 8.625 | 4,350 | 11 | 235 S |
| 5.5 | 11,824 | 7.875 | 350 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 | Jul 23, 2015 | Jun 4, 2015 | Yes |
| 00 | Jan 12, 1984 | Mar 1, 1976 | — |
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 42-317-31487 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-31487 → 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/31731487, documented in the API reference.