TEXAS · WELLS · HEMPHILL COUNTY · LOCKHART LEASE · API 42-211-35438 · DISTRICT 08
Lockhart #1057HA
Hemphill County · Feldman (Tonkawa) field · Shut In · Horizontal
Lockhart #1057HA (API 42-211-35438) is a horizontal well in Hemphill County operated by Unbridled Resources LLC, completed March 2, 2015 and listed as shut in on the RRC schedule, shut in July 1, 2016.
The RRC has issued one drilling permit (amended once), issued October 16, 2014, permitted to 7,641 ft.
It was permitted by 4p Energy Texas, LLC and has since transferred to Unbridled Resources LLC on the wellbore schedule.
Completion filings report 9 formation tops, including Brown Dolomite, Douglas, Tonkawa, Brownsville.
Its lease has reported 7.88K barrels of oil and 360K mcf of gas since March 2015, last reporting in July 2026.
Operator of record
Permitted by 4P Energy Texas, LLC; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Active (A)
- P-5 last filed
- Dec 17, 2025
- Permits on file
- 6
- Phone
- (318) 751-3917
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unbridled Resources LLC |
| Production reports | Unbridled Resources, LLCthrough Dec 2022 |
| Latest permit | 4P Energy Texas, LLCOct 16, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,641
- total depth, ft
- 2
- permits on file
- Oct 16, 2014
- last permit issued
- Mar 2, 2015
- completed
- 7.88K
- cumulative oil, bbl
- 360K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 2, 2015
- Shut in
- Jul 1, 2016
- 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 |
|---|---|---|---|---|---|---|
| Lockhart O-14-9517 | Feldman (Tonkawa) | Unbridled Resources, LLC | 1 | 7.88K | 360K | Mar 2015 – Jul 2026 |
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.
- 1Enervest Operating, L.L.C.Apr 2015 → Dec 2015
- 24P Energy Texas, LLCJan 2016 → Oct 2020
- 3Unbridled Resources, LLCNov 2020 → May 2022
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 798167-98 | Drill | 4P Energy Texas, LLC | Dec 17, 2014 | Oct 16, 2014 | Dec 30, 2014 | 9,000 |
| 798167-99 | Drill | 4P Energy Texas, LLC | Oct 10, 2014 | Oct 16, 2014 | Dec 30, 2014 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 2, 2015 | Lockhart O-14-9517 | Feldman (Tonkawa) | Unbridled Resources LLC | Shut In · shut in Jul 1, 2016 | 7,641 |
Formation tops
As filed on W-2/G-1. Subsea from 2,667 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Brown DolomiteBROWN DOLOMITE - PROD, PRESSURED | 3,965 | -1,298 |
| Douglas | 6,955 | -4,288 |
| Tonkawa | 7,641 | -4,974 |
| Brownsville | — | — |
| Cleveland | — | — |
| Kansas CityKANSAS CITY (HOGSHOOTER) | — | — |
| OswegoOSWEGO UPPER | — | — |
| PennsylvanianPENNSYLVANIAN (MARMATON) | — | — |
| PennsylvanianPENNSYLVANIAN SAND | — | — |
| Topeka | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,210 | 13,158 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 800 | 12.25 | 552 S |
| 7 | 7,114 | 8.75 | 405 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 | Apr 11, 2017 | Oct 28, 2015 | — |
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 42-211-35438 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-35438 → 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/21135438, documented in the API reference.