TEXAS · WELLS · MARTIN COUNTY · GRISHAM "21" LEASE · API 42-317-34958 · DISTRICT 7B
Grisham 21 #1
Martin County · Spraberry (Trend Area) field · Producing · Vertical
Grisham 21 #1 (API 42-317-34958) is a well in Martin County operated by Diamondback E&P LLC, completed October 18, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued July 17, 2007, permitted to 9,892 ft.
It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Spraberry, Dean, Wolfcamp.
Its lease has reported 43.8K barrels of oil and 54K mcf of gas since October 2007, last reporting in July 2026.
Operator of record
Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,243
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Pioneer Natural Res. USA, Inc.Jul 17, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,892
- total depth, ft
- 1
- permits on file
- Jul 17, 2007
- last permit issued
- Oct 18, 2007
- completed
- 43.8K
- cumulative oil, bbl
- 54K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2007 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 18, 2007
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 |
|---|---|---|---|---|---|---|
| Grisham "21" O-10-38526 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 43.8K | 54K | Oct 2007 – Jul 2026 |
Oil, barrels lease total
Last 12 months 2,346 · prior 12 1,302(+80%)
Gas, mcf lease total
Last 12 months 346 · prior 12 183(+89%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Nov 2007 → Aug 2017
- 2JM Cox Resources, L.P.Sep 2017 → Nov 2017
- 3QEP Energy CompanyDec 2017 → Sep 2021
- 4Diamondback E&P LLCOct 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 642135-99 | Drill | Pioneer Natural Res. USA, Inc. | Jul 9, 2007 | Jul 17, 2007 | Aug 22, 2007 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 18, 2007 | Grisham 21 O-10-38526 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 9,892 |
Formation tops
As filed on W-2/G-1. Subsea from 2,811 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,370 | 7,524 | Perforated |
| 8,084 | 8,253 | Perforated |
| 8,833 | 9,068 | Perforated |
| 9,120 | 9,777 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 395 | 11 | 300 S |
| 4.5 | 9,888 | 7.875 | 1,000 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 | Feb 19, 2008 | Jan 18, 2008 | Yes |
| 00 | Feb 6, 2008 | — | — |
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 42-317-34958 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-34958 → 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/31734958, documented in the API reference.