WELL · 42-389-35340 · DISTRICT 8
Big Gipper State B #2507H
Reeves County · Wolfbone (Trend Area) field · Producing · Horizontal
Big Gipper State B #2507H (API 42-389-35340) is a horizontal well in Reeves County operated by U.S. Energy Development Corp, completed December 9, 2016 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued August 12, 2016, permitted to 10,900 ft.
It was permitted by Cog Operating LLC and has since transferred to U.S. Energy Development Corp on the wellbore schedule.
Completion filings report 8 formation tops, including Delaware, Castile, Bell Canyon, Cherry Canyon.
Its lease has reported 382K barrels of oil and 595K mcf of gas since December 2016, last reporting in July 2026.
Operator of record
Permitted by COG Operating LLC; the EWA schedule now lists a different operator.
Fort Worth, TX · P-5 Y, filed Jan 5, 2026 · 225 permits on file · (800) 357-9165
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | U.S. Energy Development Corp |
| Production reports | U.S. Energy Development Corpthrough Apr 2026 |
| Latest permit | COG Operating LLCAug 12, 2016 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,900
- total depth, ft
- 2
- permits on file
- Aug 12, 2016
- last permit issued
- Dec 9, 2016
- completed
- 382K
- cumulative oil, bbl
- 595K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Dec 2016 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 9, 2016
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.301847, -103.435342
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Reeves 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 Gipper State B O-10-49383 | Wolfbone (Trend Area) | U.S. Energy Development Corp | 1 | 382K | 595K | Dec 2016 – Jul 2026 |
Oil, barrels lease total
Last 12 months 9,579 · prior 12 8,861(+8%)
Gas, mcf lease total
Last 12 months 23,496 · prior 12 27,177(-14%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCDec 2016 → Mar 2025
- 2U.S. Energy Development CorpApr 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 817638-98 | Drill | COG Operating LLC | Aug 4, 2017 | Aug 12, 2016 | Aug 22, 2016 | 10,900 |
| 817638-99 | Drill | COG Operating LLC | Aug 10, 2016 | Aug 12, 2016 | Aug 22, 2016 | 10,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-49383 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,557 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| DelawareFORD-DELAWARE | 2,500 | 57 |
| CastileCASTILLE | 2,800 | -243 |
| Delaware | 4,895 | -2,338 |
| Bell Canyon | 4,936 | -2,379 |
| Cherry Canyon | 5,872 | -3,315 |
| DelawareDELAWARE CONSOLIDATED GAS | 6,500 | -3,943 |
| Bone SpringBONE SPRINGS | 8,028 | -5,471 |
| Wolfcamp | 10,490 | -7,933 |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,909 | 18,315 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,627 | 17.5 | 1,630 S |
| 9.625 | 9,984 | 12.25 | 1,900 S |
| 5.5 | 18,440 | 8.5 | 3,920 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 15, 2018 | Feb 22, 2017 | 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 42-389-35340 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35340 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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 Gipper State Unit A42-389-35237
0.0 KM · COG Operating LLC · Section with this well →
| Delaware | 2,500 | 56 |
| Castile | 2,800 | -244 |
| Bell Canyon | 4,947 | -2,391 |
| Delaware | 5,700 | -3,144 |
| Cherry Canyon | 5,890 | -3,334 |
| Delaware | 6,500 | -3,944 |
| Bone Spring | 8,052 | -5,496 |
| Wolfcamp | 10,659 | -8,103 |
10 TOPS · FIRST 8
Gutterballs State 14-1542-389-40290
2.3 KM · Blue OX Resources Operating LLC · Section with this well →
| Delaware | 942 | 1,651 |
| Delaware | 3,290 | -697 |
| Castile | 4,204 | -1,611 |
| Bell Canyon | 5,004 | -2,411 |
| Delaware | 5,551 | -2,958 |
| Cherry Canyon | 5,988 | -3,395 |
| Bone Spring | 8,147 | -5,554 |
| Bone Spring | 8,147 | -5,554 |
13 TOPS · FIRST 8
Gutterballs State 14-1542-389-40291
2.3 KM · Blue OX Resources Operating LLC · Section with this well →
| Delaware | 942 | 1,651 |
| Bone Spring | 2,747 | -154 |
| Delaware | 3,290 | -697 |
| Castile | 4,204 | -1,611 |
| Bell Canyon | 5,004 | -2,411 |
| Delaware | 5,551 | -2,958 |
| Cherry Canyon | 5,988 | -3,395 |
| Bone Spring | 8,147 | -5,554 |
13 TOPS · FIRST 8
Hold MY Fosters 1042-389-41501
2.5 KM · Greenlake Energy Operating, LLC · Section with this well →
| Bell Canyon | 5,000 | -2,389 |
| Cherry Canyon | 5,949 | -3,338 |
| Brushy Canyon | 7,075 | -4,464 |
| Bone Spring | 8,044 | -5,433 |
| Bone Spring | 9,685 | -7,074 |
| Permian (undifferentiated) | — | |
| Castile | — | |
| Delaware | — |
10 TOPS · FIRST 8
Hold MY Fosters B 1042-389-41502
2.6 KM · Greenlake Energy Operating, LLC · Section with this well →
| Bell Canyon | 4,994 | -2,382 |
| Cherry Canyon | 5,941 | -3,329 |
| Brushy Canyon | 7,064 | -4,452 |
| Bone Spring | 8,038 | -5,426 |
| Bone Spring | 9,675 | -7,063 |
| Delaware | — | |
| Castile | — | |
| Delaware | — |
10 TOPS · FIRST 8
King Fisher SWD SE42-389-36369
2.9 KM · Rosetta Resources Operating LP · Section with this well →
| Rustler | 944 | 1,628 |
| Salado | 1,390 | 1,182 |
| Delaware | 4,966 | -2,394 |
| Bell Canyon | 4,998 | -2,426 |
| Cherry Canyon | 5,943 | -3,371 |
| Brushy Canyon | 6,960 | -4,388 |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
Toyah West 4-942-389-37169
3.2 KM · OXY USA WTP LP · Section with this well →
| Castile | 958 | 1,656 |
| Permian (undifferentiated) | 958 | 1,656 |
| Delaware | 4,981 | -2,367 |
| Bell Canyon | 4,981 | -2,367 |
| Delaware | 5,004 | -2,390 |
| Delaware | 5,101 | -2,487 |
| Cherry Canyon | 5,951 | -3,337 |
| Bone Spring | 8,084 | -5,470 |
10 TOPS · FIRST 8
Toyah East 4-942-389-37170
3.2 KM · OXY USA WTP LP · Section with this well →
| Permian (undifferentiated) | 958 | 1,656 |
| Castile | 958 | 1,656 |
| Delaware | 4,983 | -2,369 |
| Bell Canyon | 4,983 | -2,369 |
| Delaware | 5,010 | -2,396 |
| Delaware | 5,112 | -2,498 |
| Cherry Canyon | 5,958 | -3,344 |
| Bone Spring | 8,078 | -5,464 |
11 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/38935340, documented in the API reference.