WELL · 42-211-35666 · DISTRICT 10
Big Country #7401H
Hemphill County · Buffalo Wallow (Granite Wash) field · Horizontal
Big Country #7401H (API 42-211-35666) is a horizontal well in Hemphill County operated by Ehvi Exploration LLC, completed February 4, 2023.
The RRC has issued one drilling permit, issued October 3, 2022, permitted to 14,500 ft.
Completion filings report 9 formation tops, including Brown Dolomite, Douglas, Kansas City, Cleveland.
No lease production has been reported under this well’s leases.
Operator of record
Denver, CO · P-5 Y, filed Apr 4, 2025 · 7 permits on file · (860) 382-5511
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ehvi Exploration LLC |
| Production reports | Validus Energy II Midcon LLCthrough Apr 2026 |
| Latest permit | Ehvi Exploration, LLCOct 3, 2022 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 14,500
- total depth, ft
- 1
- permits on file
- Oct 3, 2022
- last permit issued
- Feb 4, 2023
- completed
- 0
- cumulative oil, bbl
- 1.28M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2023 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 4, 2023
- Shut in
- —
- Plugged
- —
Surface location
35.752072, -100.468581
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Hemphill County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 2 leases 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 |
|---|---|---|---|---|---|---|
| Big Country G-14-296778 | Buffalo Wallow (Granite Wash) | Validus Energy II Midcon LLC | 1 | 0 | 1.28M | Feb 2023 – Jul 2026 |
| Big Country O-14-9810 | Buffalo Wallow (Granite Wash) | Ehvi Exploration, LLC | 1 | 0 | 0 | Feb 2023 – May 2024 |
Gas, mcf lease total
Last 12 months 273,987 · prior 12 355,866(-23%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Ehvi Exploration, LLCFeb 2023 → Sep 2024
- 2Validus Energy II Midcon LLCOct 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 883635-99 | Drill | Ehvi Exploration, LLC | Sep 2, 2022 | Oct 3, 2022 | Oct 19, 2022 | 14,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-14-296778 | — | — | — | — |
| — | — O-14-9810 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,755 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Brown DolomiteBROWN DOLOMITE - PROD, PRESSURED | 4,331 | -1,576 |
| Douglas | 7,461 | -4,706 |
| Kansas CityKANSAS CITY (HOGSHOOTER) | 8,877 | -6,122 |
| Cleveland | 9,268 | -6,513 |
| PennsylvanianPENNSYLVANIAN (MARMATON) | 10,516 | -7,761 |
| Brownsville | — | — |
| Cleveland | — | — |
| OswegoOSWEGO UPPER | — | — |
| PennsylvanianPENNSYLVANIAN (MARMATON) | — | — |
| PennsylvanianPENNSYLVANIAN SAND | — | — |
| Tonkawa | — | — |
| Topeka | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,330 | 17,223 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 997 | 12.25 | 289 S |
| 7 | 11,814 | 8.75 | 566 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 | Jul 1, 2024 | Jun 12, 2024 | — |
| 00 | May 7, 2024 | Feb 13, 2024 | — |
| 00 | Jun 22, 2023 | Mar 16, 2023 | — |
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 42-211-35666 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-211-35666 → 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.
Risley, Mamie Pearl42-211-35667
5.3 KM · Bracken Operating, L.L.C. · Section with this well →
| Brown Dolomite | 4,250 | -1,563 |
| Douglas | 7,540 | -4,853 |
| Tonkawa | 8,317 | -5,630 |
| Kansas City | 8,901 | -6,214 |
| Cleveland | 9,289 | -6,602 |
| Oswego | 10,459 | -7,772 |
| Pennsylvanian | 10,803 | -8,116 |
| Pennsylvanian | — |
10 TOPS · FIRST 8
J.W. Campbell Unit42-211-31270
5.6 KM · Lone Tree Oil & Gas LLC · Section with this well →
| Marmaton | 9,188 | -6,664 |
| Granite Wash | 9,849 | -7,325 |
| St. Clair (Granite Wash) | 10,027 | -7,503 |
Little-Pyeatt 30-19 ME EX42-211-35658
6.8 KM · Blackbeard Operating, LLC · Section with this well →
| Brown Dolomite | 4,230 | -1,531 |
| Douglas | 7,459 | -4,760 |
| Kansas City | 8,817 | -6,118 |
| Cleveland | 9,445 | -6,746 |
| Pennsylvanian | 9,725 | -7,026 |
| Oswego | — | |
| Brownsville | — | |
| Topeka | — |
10 TOPS · FIRST 8
Little 30-43 ME EX42-211-35657
6.8 KM · Blackbeard Operating, LLC · Section with this well →
| Brown Dolomite | 4,223 | -1,524 |
| Douglas | 7,415 | -4,716 |
| Cleveland | 7,723 | -5,024 |
| Kansas City | 8,824 | -6,125 |
| Pennsylvanian | 9,960 | -7,261 |
| Brownsville | — | |
| Topeka | — | |
| Tonkawa | — |
10 TOPS · FIRST 8
Little-Pyeatt 30-19 ME WX42-211-35590
6.9 KM · Tecolote Energy Operating, LLC · Section with this well →
| Brown Dolomite | 4,330 | -1,552 |
| Topeka | 6,739 | -3,961 |
| Brownsville | 6,844 | -4,066 |
| Pennsylvanian | 7,274 | -4,496 |
| Douglas | 7,478 | -4,700 |
| Tonkawa | 8,246 | -5,468 |
| Kansas City | 8,834 | -6,056 |
| Cleveland | 9,477 | -6,699 |
10 TOPS · FIRST 8
Young 51-66 MD EX42-211-35598
7.5 KM · Tecolote Energy Operating, LLC · Section with this well →
| Brown Dolomite | 4,784 | -2,166 |
| Topeka | 6,836 | -4,218 |
| Brownsville | 6,976 | -4,358 |
| Douglas | 7,765 | -5,147 |
| Tonkawa | 8,545 | -5,927 |
| Pennsylvanian | 8,900 | -6,282 |
| Kansas City | 9,125 | -6,507 |
| Cleveland | 9,800 | -7,182 |
10 TOPS · FIRST 8
Young 51-66 ME EX42-211-35597
7.5 KM · Tecolote Energy Operating, LLC · Section with this well →
| Brown Dolomite | 4,788 | -2,170 |
| Topeka | 6,838 | -4,220 |
| Brownsville | 6,978 | -4,360 |
| Douglas | 7,768 | -5,150 |
| Tonkawa | 8,548 | -5,930 |
| Pennsylvanian | 8,903 | -6,285 |
| Kansas City | 9,128 | -6,510 |
| Cleveland | 9,802 | -7,184 |
10 TOPS · FIRST 8
Young 51-66 MG EX42-211-35595
7.5 KM · Tecolote Energy Operating, LLC · Section with this well →
| Brown Dolomite | 4,794 | -2,176 |
| Topeka | 6,843 | -4,225 |
| Brownsville | 6,983 | -4,365 |
| Douglas | 7,773 | -5,155 |
| Tonkawa | 8,553 | -5,935 |
| Pennsylvanian | 8,908 | -6,290 |
| Kansas City | 9,133 | -6,515 |
| Cleveland | 9,808 | -7,190 |
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/21135666, documented in the API reference.