WELL · 42-389-36848 · DISTRICT 8
Darlington Unit 11B4 #4H
Reeves County · Wolfbone (Trend Area) field · Producing · Horizontal
Darlington Unit 11b4 #4H (API 42-389-36848) is a horizontal well in Reeves County operated by Vtx Energy Operating LLC, completed February 14, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 18, 2018, permitted to 13,000 ft.
It was permitted by Pri Operating, LLC and has since transferred to Vtx Energy Operating LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Bell Canyon, Delaware, Cherry Canyon, Bone Spring.
Its lease has reported 261K barrels of oil and 728K mcf of gas since September 2018, last reporting in July 2026.
Operator of record
Permitted by Pri Operating, LLC; the EWA schedule now lists a different operator.
Austin, TX · P-5 Y, filed May 4, 2026 · 164 permits on file · (800) 826-8119
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | VTX Energy Operating LLC |
| Production reports | VTX Energy Operating, LLCthrough Apr 2026 |
| Latest permit | Pri Operating, LLCApr 18, 2018 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,000
- total depth, ft
- 1
- permits on file
- Apr 18, 2018
- last permit issued
- Feb 14, 2019
- completed
- 261K
- cumulative oil, bbl
- 728K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 14, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
31.289386, -103.241994
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 |
|---|---|---|---|---|---|---|
| Darlington Unit 11B4 O-10-50828 | Wolfbone (Trend Area) | VTX Energy Operating, LLC | 1 | 261K | 728K | Sep 2018 – Jul 2026 |
Oil, barrels lease total
Last 12 months 11,246 · prior 12 16,379(-31%)
Gas, mcf lease total
Last 12 months 22,635 · prior 12 29,326(-23%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pri Operating, LLCSep 2018 → Aug 2023
- 2VTX Energy Operating, LLCSep 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 836618-99 | Drill | Pri Operating, LLC | Feb 20, 2018 | Apr 18, 2018 | May 30, 2018 | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-50828 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,699 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Bell Canyon | 5,060 | -2,361 |
| Delaware | 5,060 | -2,361 |
| Cherry Canyon | 5,950 | -3,251 |
| Bone SpringBONE SPRINGS | 8,130 | -5,431 |
| Wolfcamp | 10,520 | -7,821 |
| CastileCASTILLE | — | — |
| DelawareDELAWARE CONSOLIDATED GAS | — | — |
| DelawareFORD-DELAWARE | — | — |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,299 | 18,962 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,472 | 17.5 | 1,405 S |
| 9.625 | 10,176 | 12.25 | 2,161 S |
| 5.5 | 18,962 | 8.5 | 3,325 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 | Jun 21, 2019 | Feb 28, 2019 | Yes |
| 00 | Dec 12, 2018 | Oct 30, 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 42-389-36848 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-36848 → 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.
Darlington Unit 11B542-389-36849
0.0 KM · Pri Operating, LLC · Section with this well →
| Delaware | 5,061 | -3,391 |
| Bell Canyon | 5,061 | -3,391 |
| Cherry Canyon | 5,952 | -4,282 |
| Bone Spring | 8,106 | -6,436 |
| Wolfcamp | 10,513 | -8,843 |
| Permian (undifferentiated) | — | |
| Ellenburger | — | |
| Delaware | — |
14 TOPS · FIRST 8
Darlington Unit 11B42-389-34689
0.4 KM · Patriot Resources, Inc. · Section with this well →
| Bell Canyon | 5,062 | -2,396 |
| Delaware | 5,062 | -2,396 |
| Cherry Canyon | 5,990 | -3,324 |
| Bone Spring | 8,107 | -5,441 |
| Wolfcamp | 10,507 | -7,841 |
| Pennsylvanian | — | |
| Permian (undifferentiated) | — | |
| Castile | — |
10 TOPS · FIRST 8
Darlington Unit 11A42-389-38429
0.5 KM · VTX Energy Operating, LLC · Section with this well →
| Bell Canyon | 5,061 | -2,394 |
| Delaware | 5,061 | -2,394 |
| Cherry Canyon | 5,952 | -3,285 |
| Bone Spring | 8,272 | -5,605 |
| Delaware | — | |
| Castile | — | |
| Wolfcamp | — | |
| Permian (undifferentiated) | — |
10 TOPS · FIRST 8
Darlington Unit 11A42-389-36571
0.6 KM · Pri Operating, LLC · Section with this well →
| Delaware | 5,074 | -2,404 |
| Bell Canyon | 5,074 | -2,404 |
| Bone Spring | 8,105 | -5,435 |
| Wolfcamp | 10,556 | -7,886 |
| Permian (undifferentiated) | — | |
| Cherry Canyon | — | |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
Waha42-389-36272
0.6 KM · Parsley Energy Operations, LLC · Section with this well →
| Lamar | 5,060 | -2,395 |
| Bone Spring | 8,228 | -5,563 |
| Wolfcamp | 10,494 | -7,829 |
| Bell Canyon | — | |
| Castile | — | |
| Cherry Canyon | — | |
| Delaware | — | |
| Delaware | — |
10 TOPS · FIRST 8
Waha42-389-36135
0.6 KM · Parsley Energy Operations, LLC · Section with this well →
| Rustler | 828 | 1,837 |
| Lamar | 5,061 | -2,396 |
| Bone Spring | 8,222 | -5,557 |
| Delaware | — | |
| Delaware | — | |
| Cherry Canyon | — | |
| Castile | — | |
| Bell Canyon | — |
10 TOPS · FIRST 8
Ranger 14-7 6442-389-41082
0.7 KM · VTX Energy Operating, LLC · Section with this well →
| Bell Canyon | 5,045 | -2,375 |
| Cherry Canyon | 5,920 | -3,250 |
| Bone Spring | 8,987 | -6,317 |
| Bone Spring | 9,224 | -6,554 |
| Bone Spring | 9,665 | -6,995 |
| Permian (undifferentiated) | — | |
| Castile | — | |
| Delaware | — |
10 TOPS · FIRST 8
Ranger 14-7 3142-389-41081
0.7 KM · VTX Energy Operating, LLC · Section with this well →
| Bell Canyon | 5,025 | -2,355 |
| Cherry Canyon | 5,900 | -3,230 |
| Bone Spring | 8,945 | -6,275 |
| Bone Spring | 9,165 | -6,495 |
| Bone Spring | 9,702 | -7,032 |
| Castile | — | |
| Delaware | — | |
| Delaware | — |
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/38936848, documented in the API reference.