TEXAS · WELLS · GLASSCOCK COUNTY · LEFTFIELD LEASE · API 42-173-31787 · DISTRICT 7B
Leftfield #1
Glasscock County · Dewey Lake S. (Strawn) field · Vertical
Leftfield #1 (API 42-173-31787) is a plugged well in Glasscock County, plugged April 3, 2024, last operated by Pioneer Natural Res. USA Inc..
The RRC has issued one drilling permit, issued January 17, 1985, permitted to 10,200 ft.
It was permitted by Beach Exploration, Inc. and has since transferred to Pioneer Natural Res. USA Inc. on the wellbore schedule.
Completion filings report 7 formation tops, including Yates, San Andres, Clear Fork, Spraberry.
Its lease has reported 12.5K barrels of oil and 69.7K mcf of gas since January 1993, last reporting in April 2024.
Operator of record
Permitted by Beach Exploration, Inc.; the EWA schedule now lists a different operator.
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 8, 2026
- Permits on file
- 15,628
- Phone
- (972) 444-4001
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Pioneer Natural Res. USA Inc. |
| Production reports | Parsley Energy Operations, LLCthrough Jan 2021 |
| Latest permit | Beach Exploration, Inc.Jan 17, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,200
- total depth, ft
- 1
- permits on file
- Jan 17, 1985
- last permit issued
- Nov 30, 2023
- completed
- 12.5K
- cumulative oil, bbl
- 69.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Apr 2024
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Nov 30, 2023
- Shut in
- —
- Plugged
- Apr 3, 2024
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 |
|---|---|---|---|---|---|---|
| Leftfield O-10-30568 | Dewey Lake, S. (Strawn) | Pioneer Natural Res. USA, Inc. | 1 | 12.5K | 69.7K | Jan 1993 – Apr 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.
- 1Simpson Oil CompanyJan 1993 → Oct 2004
- 2Simpson Bros. Oil Co.-OdessaMar 1994 → Jan 2001
- 3Simpson Oil LLCNov 2004 → Jan 2008
- 4Great Basin Petroleum Serv, L.P.Feb 2008 → Jul 2008
- 5Great Basin Well Service Corp.Aug 2008 → Apr 2015
- 6Veritas Energy, LLCJul 2015 → Sep 2016
- 7De Operating LLCOct 2016 → Mar 2017
- 8Parsley Energy Operations, LLCMay 2017 → Jan 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 264498-99 | Drill | Beach Exploration, Inc. | Jan 30, 1985 | Jan 17, 1985 | Mar 6, 1985 | 10,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 30, 2023 | Leftfield O-10-30568 | Dewey Lake S. (Strawn) | Pioneer Natural Res. USA Inc. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,728 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,080 | 648 |
| San Andres | 3,310 | -582 |
| Clear ForkCLEARFORK | 6,035 | -3,307 |
| Spraberry | 7,220 | -4,492 |
| SpraberrySPRAYBERRY | 7,220 | -4,492 |
| Dean | 7,910 | -5,182 |
| Wolfcamp | 8,306 | -5,578 |
| Strawn | 10,026 | -7,298 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,357 | 10,267 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 355 | 17.5 | 350 S |
| 9.625 | 3,456 | 12.25 | 300 S |
| 7 | 8,357 | 9.25 | 500 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 | Mar 8, 2024 | Feb 8, 2024 | — |
| 00 | Mar 30, 1990 | Dec 15, 1989 | — |
| 00 | Oct 13, 1989 | Aug 25, 1989 | — |
| 00 | Mar 20, 1986 | Mar 13, 1986 | Yes |
| 00 | Mar 19, 1986 | — | — |
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 42-173-31787 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-31787 → 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/17331787, documented in the API reference.