WELL · 42-251-31217 · DISTRICT 9
Hardcastle #4H
Johnson County · Newark East (Barnett Shale) field · Horizontal
Hardcastle #4H (API 42-251-31217) is a plugged horizontal well in Johnson County, plugged August 18, 2025, last operated by Delta Oil & Gas Ltd..
The RRC has issued one drilling permit, issued September 28, 2006, permitted to 7,000 ft.
It was permitted by Eog Resources, Inc. and has since transferred to Delta Oil & Gas Ltd. on the wellbore schedule.
Completion filings report 6 formation tops, including Strawn, Atoka, Bendcongl, Hood.
Operator of record
Permitted by EOG Resources, Inc.; the EWA schedule now lists a different operator.
- Based in
- Breckenridge, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 12, 2026
- Permits on file
- 348
- Phone
- (254) 559-9841
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Delta Oil & Gas Ltd. |
| Production reports | Upp Operating, LLCthrough Nov 2019 |
| Latest permit | EOG Resources, Inc.Sep 28, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 7,000
- total depth, ft
- 1
- permits on file
- Sep 28, 2006
- last permit issued
- May 25, 2007
- completed
- 0
- cumulative oil, bbl
- 1.99M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2007 THROUGH Jul 2025
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- May 25, 2007
- Shut in
- —
- Plugged
- Aug 18, 2025
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 |
|---|---|---|---|---|---|---|
| Hardcastle G-13-231487 | Newark, East (Barnett Shale) | Delta Oil & Gas Ltd. | 1 | 0 | 1.99M | May 2007 – Jul 2025 |
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.
- 1EOG Resources, Inc.May 2007 → Dec 2016
- 2Enervest Operating, L.L.C.Jan 2017 → Mar 2019
- 3Upp Operating, LLCApr 2019 → Nov 2019
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 626536-99 | Drill | EOG Resources, Inc. | Sep 25, 2006 | Sep 28, 2006 | Dec 21, 2006 | 7,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-13-231487 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 940 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Strawn | 1,158 | -218 |
| Atoka | 4,598 | -3,658 |
| Bendcongl | 5,208 | -4,268 |
| Hood | 5,638 | -4,698 |
| Marble Falls | 5,970 | -5,030 |
| BarnettBARNETT SHALE | 6,415 | -5,475 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 6,642 | 9,228 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,120 | 12.25 | 315 S |
| 5.5 | 9,375 | 8.75 | 855 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 | Jan 3, 2008 | Jul 31, 2007 | Yes |
| 00 | Dec 12, 2007 | — | — |
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 42-251-31217 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-251-31217 → 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/25131217, documented in the API reference.