WELL · 42-389-38134 · DISTRICT 8
Little Big Chief Unit #4901H
Reeves County · Hoefs T-K (Wolfcamp) field · Producing · Horizontal
Little Big Chief Unit #4901H (API 42-389-38134) is a horizontal well in Reeves County operated by Scout Energy Management LLC, completed December 22, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 28, 2019, permitted to 10,700 ft.
It was permitted by Cog Operating LLC and has since transferred to Scout Energy Management LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Delaware, Castile, Bell Canyon, Cherry Canyon.
Its lease has reported 687K barrels of oil and 1.38M mcf of gas since August 2015, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by COG Operating LLC; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed Aug 4, 2025 · 483 permits on file · (888) 493-2118
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Scout Energy Management LLC |
| Production reports | Scout Energy Management LLCthrough Apr 2026 |
| Latest permit | COG Operating LLCFeb 28, 2019 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,700
- total depth, ft
- 1
- permits on file
- Feb 28, 2019
- last permit issued
- Dec 22, 2019
- completed
- 687K
- cumulative oil, bbl
- 1.38M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Aug 2015 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 22, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.052197, -103.467090
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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Little Big Chief Unit O-10-47167 | Hoefs T-K (Wolfcamp) | Scout Energy Management LLC | 2 | 687K | 1.38M | Aug 2015 – Jul 2026 |
Oil, barrels lease total
Last 12 months 32,020 · prior 12 27,747(+15%)
Gas, mcf lease total
Last 12 months 154,300 · prior 12 87,034(+77%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCAug 2015 → Feb 2025
- 2Scout Energy Management LLCMar 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 850387-99 | Drill | COG Operating LLC | Feb 25, 2019 | Feb 28, 2019 | Mar 12, 2019 | 10,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-47167 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,923 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| DelawareFORD-DELAWARE | 2,500 | 423 |
| CastileCASTILLE | 2,800 | 123 |
| Delaware | 5,247 | -2,324 |
| Bell Canyon | 5,287 | -2,364 |
| Cherry Canyon | 6,070 | -3,147 |
| DelawareDELAWARE CONSOLIDATED GAS | 6,500 | -3,577 |
| Bone SpringBONE SPRINGS | 7,995 | -5,072 |
| Wolfcamp | 10,177 | -7,254 |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,599 | 22,026 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,825 | 17.5 | 1,450 S |
| 9.625 | 9,796 | 12.25 | 1,105 S |
| 5.5 | 22,139 | 8.5 | 4,100 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 | May 26, 2020 | Feb 20, 2020 | 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 42-389-38134 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-38134 → 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.
White Crow Unit42-389-36539
1.5 KM · COG Operating LLC · Section with this well →
| Delaware | 2,500 | 444 |
| Castile | 2,800 | 144 |
| Delaware | 5,269 | -2,325 |
| Bell Canyon | 5,329 | -2,385 |
| Cherry Canyon | 6,054 | -3,110 |
| Delaware | 6,500 | -3,556 |
| Bone Spring | 7,999 | -5,055 |
| Wolfcamp | 10,089 | -7,145 |
10 TOPS · FIRST 8
White Crow Unit42-389-38191
1.7 KM · COG Operating LLC · Section with this well →
| Castile | 2,800 | 140 |
| Delaware | 5,272 | -2,332 |
| Bell Canyon | 5,297 | -2,357 |
| Cherry Canyon | 6,063 | -3,123 |
| Delaware | 6,500 | -3,560 |
| Bone Spring | 7,975 | -5,035 |
| Wolfcamp | 10,085 | -7,145 |
| Permian (undifferentiated) | 11,300 | -8,360 |
10 TOPS · FIRST 8
White Crow Unit42-389-37088
1.7 KM · COG Operating LLC · Section with this well →
| Delaware | 5,284 | -2,335 |
| Bell Canyon | 5,339 | -2,390 |
| Cherry Canyon | 6,059 | -3,110 |
| Bone Spring | 8,004 | -5,055 |
| Wolfcamp | 10,098 | -7,149 |
| Delaware | — | |
| Castile | — | |
| Delaware | — |
10 TOPS · FIRST 8
White Crow Unit42-389-38192
1.8 KM · COG Operating LLC · Section with this well →
| Delaware | 2,500 | 440 |
| Castile | 2,800 | 140 |
| Delaware | 5,272 | -2,332 |
| Bell Canyon | 5,297 | -2,357 |
| Cherry Canyon | 6,063 | -3,123 |
| Delaware | 6,500 | -3,560 |
| Bone Spring | 7,975 | -5,035 |
| Wolfcamp | 10,085 | -7,145 |
10 TOPS · FIRST 8
Left Hand Bull Unit42-389-36336
1.8 KM · COG Operating LLC · Section with this well →
| Delaware | 2,500 | 394 |
| Castile | 2,800 | 94 |
| Delaware | 5,214 | -2,320 |
| Bell Canyon | 5,288 | -2,394 |
| Cherry Canyon | 6,069 | -3,175 |
| Delaware | 6,500 | -3,606 |
| Bone Spring | 8,012 | -5,118 |
| Wolfcamp | 10,204 | -7,310 |
10 TOPS · FIRST 8
Powderhorn Unit42-389-39715
2.1 KM · COG Operating LLC · Section with this well →
| Delaware | 2,500 | 418 |
| Delaware | 2,500 | 418 |
| Castile | 2,800 | 118 |
| Bell Canyon | 5,297 | -2,379 |
| Cherry Canyon | 6,054 | -3,136 |
| Delaware | 6,500 | -3,582 |
| Bone Spring | 8,708 | -5,790 |
| Wolfcamp | 10,069 | -7,151 |
10 TOPS · FIRST 8
Powderhorn Unit42-389-39714
2.1 KM · COG Operating LLC · Section with this well →
| Castile | 2,500 | 405 |
| Delaware | 2,500 | 405 |
| Delaware | 5,221 | -2,316 |
| Bell Canyon | 5,289 | -2,384 |
| Delaware | 6,000 | -3,095 |
| Cherry Canyon | 6,056 | -3,151 |
| Bone Spring | 8,740 | -5,835 |
| Wolfcamp | 10,090 | -7,185 |
10 TOPS · FIRST 8
Powderhorn Unit42-389-39709
2.1 KM · COG Operating LLC · Section with this well →
| Castile | 2,500 | 401 |
| Delaware | 2,500 | 401 |
| Delaware | 5,216 | -2,315 |
| Bell Canyon | 5,284 | -2,383 |
| Delaware | 6,000 | -3,099 |
| Cherry Canyon | 6,057 | -3,156 |
| Bone Spring | 7,820 | -4,919 |
| Wolfcamp | 10,149 | -7,248 |
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/38938134, documented in the API reference.