TEXAS · WELLS · LIPSCOMB COUNTY · TROSPER, CORWIN 431 LEASE · API 42-295-33307 · DISTRICT 08
Trosper Corwin 431 #4H
Lipscomb County · Lipscomb (Cleveland) field · Producing · Horizontal
Trosper Corwin 431 #4H (API 42-295-33307) is a horizontal well in Lipscomb County operated by Highmark Energy Operating LLC, completed September 2, 2008 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued March 19, 2008, permitted to 10,617 ft.
It was permitted by Eog Resources, Inc. and has since transferred to Highmark Energy Operating LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Checkerboard Ls, Cleveland.
Its lease has reported 58.2K barrels of oil and 648K mcf of gas since August 2005, last reporting volume in April 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by EOG Resources, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 9, 2026
- Permits on file
- 23
- Phone
- (469) 214-5299
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Highmark Energy Operating LLC |
| Production reports | Highmark Energy Operating, LLCthrough Apr 2026 |
| Latest permit | EOG Resources, Inc.Mar 19, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,617
- total depth, ft
- 2
- permits on file
- Mar 19, 2008
- last permit issued
- Sep 2, 2008
- completed
- 58.2K
- cumulative oil, bbl
- 648K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2005 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 2, 2008
- 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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Trosper, Corwin 431 O-14-7609 | Lipscomb (Cleveland) | Highmark Energy Operating, LLC | 2 | 58.2K | 648K | Aug 2005 – Apr 2026 |
Gas, mcf lease total
Last 12 months 22,328 · prior 12 11,308(+97%)
Oil, barrels lease total
Last 12 months 1,334 · prior 12 994(+34%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1EOG Resources, Inc.Aug 2005 → Jan 2022
- 2Highmark Energy Operating, LLCFeb 2022 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 656906-98 | Drill | EOG Resources, Inc. | Mar 31, 2008 | Mar 19, 2008 | Apr 9, 2008 | 9,000 |
| 656906-99 | Drill | EOG Resources, Inc. | Mar 7, 2008 | Mar 19, 2008 | Apr 9, 2008 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Sep 2, 2008 | Trosper Corwin 431 O-14-7609 | Lipscomb (Cleveland) | Highmark Energy Operating LLC | Producing | 10,617 |
Formation tops
As filed on W-2/G-1. Subsea from 2,480 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Checkerboard LS | 7,870 | -5,390 |
| Cleveland | 8,005 | -5,525 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,300 | 10,375 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,800 | 12.25 | 760 S |
| 4.5 | 10,608 | 8.75 | 840 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jan 5, 2009 | Sep 11, 2008 | Yes |
| 00 | Dec 2, 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 42-295-33307 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-295-33307 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it.
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/29533307, documented in the API reference.