WELL · 42-475-20451 · DISTRICT 8
Lasater R. M. #1
Ward County · Lockridge (Devonian) field · Producing · Vertical
Lasater R. M. #1 (API 42-475-20451) is a well in Ward County operated by Diamondback E&P LLC, completed June 25, 1981 and listed as producing on the RRC schedule, shut in May 1, 2026.
The RRC has issued one drilling permit, issued June 23, 1981, permitted to 19,780 ft.
It was permitted by Shell Oil Company and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Wolfcamp, Pennsylvanian, Correlation Marker, Mississippian.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Shell Oil Company; 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
- 5,237
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Shell Oil Company |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Shell Oil CompanyJun 23, 1981 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 19,780
- total depth, ft
- 1
- permits on file
- Jun 23, 1981
- last permit issued
- Jun 25, 1981
- completed
- 0
- cumulative oil, bbl
- 1.86M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 25, 1981
- Shut in
- May 1, 2026
- 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 |
|---|---|---|---|---|---|---|
| Lasater, R. M. G-10-94252 | Lockridge (Devonian) | Diamondback E&P LLC | 1 | 0 | 1.86M | Jan 1993 – Jul 2026 |
Gas, mcf lease total
Last 12 months 49,098 · prior 12 58,118(-16%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Shell Western E&P Inc.Jan 1993 → Feb 1997
- 2Altura Energy Ltd.Mar 1997 → Apr 2000
- 3Occidental Permian Ltd.May 2000 → Aug 2021
- 4Colgate Operating, LLCSep 2021 → Dec 2021
- 5Diamondback E&P LLCJan 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 124875-99 | Other | Shell Oil Company | Jun 23, 1981 | Jun 23, 1981 | — | 19,780 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 25, 1981 | Lasater R. M. G-10-94252 | Lockridge (Devonian) | Diamondback E&P LLC | Producing · shut in May 1, 2026 | 19,780 |
| Jul 6, 1968 | Lasaler R. M. G-10-44566 | Lockridge (Ellenburger 18600) | Shell Oil Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,604 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wolfcamp | 10,960 | -8,356 |
| PennsylvanianPENN DETRITAL | 14,280 | -11,676 |
| Correlation Marker | 14,540 | -11,936 |
| MississippianUPPER MISS BLACK SHALE | 14,694 | -12,090 |
| MississippianMISS LIMESTONE | 15,000 | -12,396 |
| Woodford | 15,592 | -12,988 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 16,045 | 16,305 | Perforated |
| 18,957 | 19,698 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 110 | 17.5 | 350 S |
| 20 | 110 | — | — |
| 13.375 | 4,907 | 12.25 | 5,800 S |
| 13.375 | 4,907 | — | — |
| 9.625 | 11,060 | 8.625 | 2,300 S |
| 9.625 | 11,060 | — | — |
| 5 | 14,723 | — | 600 S |
| 7.625 | 15,119 | — | — |
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 | Jan 12, 1984 | Jun 20, 1981 | — |
| 00 | Jan 12, 1984 | Jul 24, 1968 | — |
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 42-475-20451 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-475-20451 → 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/47520451, documented in the API reference.