WELL · 42-475-37386 · DISTRICT 8
O Brien G. W. Etal #2021
Ward County · Wagon Wheel (Penn) field · Vertical
O Brien G. W. Etal #2021 (API 42-475-37386) is a well in Ward County operated by Sundown Energy LP, completed January 10, 2018.
The RRC has issued one drilling permit, issued December 1, 2017, permitted to 12,000 ft.
It was permitted by Four Corners Petroleum II, LLC and has since transferred to Sundown Energy LP on the wellbore schedule.
Completion filings report 10 formation tops, including Clear Fork, Delaware, Glorieta, Holt.
Its 2 leases have reported 3.24M barrels of oil and 7.79M mcf of gas since January 1993, last reporting in July 2026. The leases carry 50 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Four Corners Petroleum II, LLC; the EWA schedule now lists a different operator.
Dallas, TX · P-5 Y, filed May 4, 2026 · 300 permits on file · (866) 580-2434
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sundown Energy LP |
| Production reports | Two P Partners, LLCthrough Apr 2026 |
| Latest permit | Four Corners Petroleum II, LLCDec 1, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 1
- permits on file
- Dec 1, 2017
- last permit issued
- Jan 10, 2018
- completed
- 3.24M
- cumulative oil, bbl
- 7.79M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 10, 2018
- Shut in
- —
- Plugged
- —
Surface location
31.590356, -103.001162
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Ward 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 50 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| O'Brien, G. W. Etal O-10-26670 | Wagon Wheel (Penn) | Sundown Energy LP | 40 | 3.03M | 7.17M | Jan 1993 – Jul 2026 |
| O'Brien, G. W. Etal O-10-55623 | Wagon Wheel (Penn) | Two P Partners, LLC | 10 | 208K | 623K | Jan 2021 – Jul 2026 |
Oil, barrels lease total
Last 12 months 215,745 · prior 12 279,475(-23%)
Gas, mcf lease total
Last 12 months 569,536 · prior 12 781,018(-27%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chevron U. S. A. Inc.Jan 1993 → Mar 1999
- 2Celero Energy, L.P.Jun 2005 → Sep 2005
- 3Whiting Oil and Gas CorporationDec 2005 → Feb 2016
- 4Four Corners Petroleum II, LLCAug 2017 → Apr 2021
- 5Two P Partners, LLCJan 2021 → Apr 2026
- 6Sundown Energy LPMay 2021 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 833671-99 | Drill | Four Corners Petroleum II, LLC | Nov 29, 2017 | Dec 1, 2017 | Dec 30, 2017 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-26670 | — | — | — | — |
| — | — O-10-55623 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,668 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK | — | — |
| Delaware | — | — |
| Glorieta | — | — |
| Holt | — | — |
| Queen | — | — |
| Rustler | — | — |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | — | — |
| Seven Rivers | — | — |
| Tubb | — | — |
| Yates | — | — |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 695 | 16 | 466 S |
| 13.375 | 715 | 16 | 466 S |
| 8.625 | 3,932 | 11 | 1,100 S |
| 8.625 | 3,950 | 11 | 1,100 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 | Apr 21, 2021 | Jun 28, 2018 | Yes |
| 00 | Aug 1, 2018 | Jun 28, 2018 | Yes |
| 00 | May 31, 2018 | Apr 19, 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 42-475-37386 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-475-37386 → 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.
G.W. Obrien et AL42-475-37500
0.0 KM · Four Corners Petroleum II, LLC · Section with this well →
| Seven Rivers | 2,777 | -108 |
| Queen | 2,993 | -324 |
| San Andres | 3,675 | -1,006 |
| Holt | 4,994 | -2,325 |
| Clear Fork | 5,617 | -2,948 |
| Tubb | 6,462 | -3,793 |
| Delaware | — | |
| Yates | — |
10 TOPS · FIRST 8
G.W. Obrien et AL42-475-37731
0.5 KM · Four Corners Petroleum II, LLC · Section with this well →
| San Andres | 3,676 | -1,006 |
| Holt | 4,982 | -2,312 |
| Clear Fork | 5,392 | -2,722 |
| Tubb | 6,361 | -3,691 |
| Seven Rivers | — | |
| Glorieta | — | |
| Delaware | — | |
| Queen | — |
10 TOPS · FIRST 8
G.W. O'Brien, et AL42-475-37599
0.6 KM · Four Corners Petroleum II, LLC · Section with this well →
| Holt | 4,964 | -2,294 |
| Clear Fork | 5,432 | -2,762 |
| Tubb | 6,303 | -3,633 |
| Glorieta | — | |
| Queen | — | |
| Rustler | — | |
| San Andres | — | |
| Seven Rivers | — |
10 TOPS · FIRST 8
G.W. O'Brien, et AL42-475-37597
0.6 KM · Four Corners Petroleum II, LLC · Section with this well →
| San Andres | 3,640 | -976 |
| Holt | 5,304 | -2,640 |
| Clear Fork | 5,408 | -2,744 |
| Tubb | 6,310 | -3,646 |
| Wichita-Albany | — | |
| Delaware | — | |
| Glorieta | — | |
| Queen | — |
10 TOPS · FIRST 8
G. W. O'Brien Etal42-475-37486
0.8 KM · Four Corners Petroleum II, LLC · Section with this well →
| Rustler | 999 | 1,657 |
| Yates | 2,502 | 154 |
| Seven Rivers | 2,770 | -114 |
| Queen | 2,989 | -333 |
| San Andres | 3,645 | -989 |
| Holt | 4,992 | -2,336 |
| Clear Fork | 5,508 | -2,852 |
| Tubb | 6,345 | -3,689 |
10 TOPS · FIRST 8
G. W. O'Brien Etal42-475-37453
0.8 KM · Four Corners Petroleum II, LLC · Section with this well →
| Rustler | 1,088 | 1,590 |
| Yates | 2,534 | 144 |
| Seven Rivers | 2,816 | -138 |
| Queen | 3,045 | -367 |
| San Andres | 3,733 | -1,055 |
| Holt | 5,071 | -2,393 |
| Clear Fork | 5,496 | -2,818 |
| Tubb | 6,417 | -3,739 |
10 TOPS · FIRST 8
G W Obrien et AL42-475-37584
0.8 KM · Four Corners Petroleum II, LLC · Section with this well →
| San Andres | 3,636 | -968 |
| Holt | 4,898 | -2,230 |
| Clear Fork | 5,370 | -2,702 |
| Tubb | 6,275 | -3,607 |
| Queen | — | |
| Rustler | — | |
| Seven Rivers | — | |
| Glorieta | — |
10 TOPS · FIRST 8
G.W. Obrien et AL42-475-37644
0.9 KM · Four Corners Petroleum II, LLC · Section with this well →
| San Andres | 3,683 | -1,010 |
| Holt | 4,968 | -2,295 |
| Clear Fork | 5,486 | -2,813 |
| Tubb | 6,388 | -3,715 |
| Seven Rivers | — | |
| Glorieta | — | |
| Rustler | — | |
| Queen | — |
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/47537386, documented in the API reference.