WELL · 42-237-40509 · DISTRICT 9
Big Horn B Lease #4
Jack County · KRS (Marble Falls) field · NO Production · Vertical
Big Horn B Lease #4 (API 42-237-40509) is a well in Jack County operated by Legacy Exploration LLC I, completed September 1, 2018 and listed as no production on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued July 6, 2018, permitted to 6,750 ft.
Completion filings report 10 formation tops, including Bryson, Atoka, Butram, Caddo.
Its lease has reported 3.6K barrels of oil and 55K mcf of gas since September 2018, last reporting in July 2026.
Operator of record
Dallas, TX · P-5 Y, filed Jun 4, 2026 · 23 permits on file · (214) 901-6211
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Legacy Exploration LLC I |
| Production reports | Legacy Exploration, LLC Ithrough Nov 2022 |
| Latest permit | Legacy Exploration, LLC IJul 6, 2018 |
- 6,750
- total depth, ft
- 2
- permits on file
- Jul 6, 2018
- last permit issued
- Sep 1, 2018
- completed
- 3.6K
- cumulative oil, bbl
- 55K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 1, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Delinquent
Surface location
33.407732, -98.160775
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Jack County.
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 |
|---|---|---|---|---|---|---|
| Big Horn 'B' Lease O-13-33844 | KRS (Marble Falls) | Legacy Exploration, LLC I | 1 | 3.6K | 55K | Sep 2018 – 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.
- 1Legacy Exploration, LLC ISep 2018 → Nov 2022
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 842069-98 | Drill | Legacy Exploration, LLC I | Nov 29, 2018 | Jul 6, 2018 | Jul 18, 2018 | 6,750 |
| 842069-99 | Drill | Legacy Exploration, LLC I | Jul 6, 2018 | Jul 6, 2018 | Jul 18, 2018 | 6,750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-13-33844 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,016 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,572 | 5,580 | Perforated |
| 5,688 | 5,692 | Perforated |
| 5,718 | 5,722 | Perforated |
| 5,790 | 5,800 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 379 | 12.25 | 275 S |
| 5.5 | 6,318 | 7.875 | 400 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 | Feb 26, 2019 | Dec 12, 2018 | Yes |
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 42-237-40509 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-237-40509 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Big Horn Lease42-237-40487
1.0 KM · Legacy Exploration, LLC I · Section with this well →
| Caddo | 5,340 | -4,367 |
| Bryson | — | |
| Weir | — | |
| Village Bend | — | |
| Strawn | — | |
| Palo Pinto | — | |
| Gunsight | — | |
| Canyon | — |
10 TOPS · FIRST 8
Big Horn Lease42-237-40490
1.4 KM · Legacy Exploration, LLC I · Section with this well →
| Caddo | 5,332 | -4,368 |
| Atoka | — | |
| Weir | — | |
| Village Bend | — | |
| Strawn | — | |
| Conglomerate | — | |
| Canyon | — | |
| Butram | — |
10 TOPS · FIRST 8
Ragin' Cajun42-237-40546
1.9 KM · Legacy Exploration, LLC I · Section with this well →
| Bryson | 5,054 | |
| Caddo | 5,712 | |
| Atoka | 5,712 | |
| Village Bend | — | |
| Strawn | — | |
| Palo Pinto | — | |
| Canyon | — | |
| Butram | — |
10 TOPS · FIRST 8
Big Horn 'a' Lease42-237-40500
1.9 KM · Legacy Exploration, LLC I · Section with this well →
| Bryson | 3,678 | -2,711 |
| Weir | — | |
| Atoka | — | |
| Butram | — | |
| Caddo | — | |
| Canyon | — | |
| Gunsight | — | |
| Palo Pinto | — |
10 TOPS · FIRST 8
Kenny42-237-40533
2.8 KM · Bowles Energy, Inc. · Section with this well →
| Bryson | 3,841 | -2,769 |
| Caddo | 5,455 | -4,383 |
| Palo Pinto | — | |
| Atoka | — | |
| Gunsight | — | |
| Village Bend | — | |
| Canyon | — | |
| Strawn | — |
10 TOPS · FIRST 8
Kirk, H. "A"42-237-30161
3.7 KM · Kirby Exploration Co. of Texas · Section with this well →
| Caddo | 4,402 | -3,429 |
| Atoka | 5,100 | -4,127 |
| Canyon | — | |
| Weir | — | |
| Village Bend | — | |
| Strawn | — | |
| Palo Pinto | — | |
| Gunsight | — |
10 TOPS · FIRST 8
Childers42-237-40477
5.3 KM · Bowles Energy, Inc. · Section with this well →
| Caddo | 5,316 | -4,310 |
| Bryson | — | |
| Butram | — | |
| Canyon | — | |
| Gunsight | — | |
| Palo Pinto | — | |
| Strawn | — | |
| Village Bend | — |
10 TOPS · FIRST 8
Alexander Trust Lease42-237-40478
5.8 KM · Legacy Exploration, LLC I · Section with this well →
| Butram | — | |
| Atoka | — | |
| Weir | — | |
| Village Bend | — | |
| Strawn | — | |
| Palo Pinto | — | |
| Gunsight | — | |
| Canyon | — |
10 TOPS · FIRST 8
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/23740509, documented in the API reference.