WELL · 42-227-38976 · DISTRICT 8
Muhly B 1612 #4HA
Howard County · Spraberry (Trend Area) field · Shut IN · Horizontal
Muhly B 1612 #4HA (API 42-227-38976) is a horizontal well in Howard County operated by Oxyrock Operating LLC, completed February 14, 2018 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued January 23, 2017, permitted to 10,000 ft.
It was permitted by Crownquest Operating, LLC and has since transferred to Oxyrock Operating LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, San Andres, Glorieta, Clear Fork.
Its lease has reported 485K barrels of oil and 1.16M mcf of gas since October 2017, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Crownquest Operating, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Mar 4, 2026 · 392 permits on file · (713) 215-7000
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Oxyrock Operating LLC |
| Production reports | Oxyrock Operating, LLCthrough Apr 2026 |
| Latest permit | Crownquest Operating, LLCJan 23, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,000
- total depth, ft
- 2
- permits on file
- Jan 23, 2017
- last permit issued
- Feb 14, 2018
- completed
- 485K
- cumulative oil, bbl
- 1.16M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2017 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 14, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
32.254428, -101.616014
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Howard 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 |
|---|---|---|---|---|---|---|
| Muhly B 1612 O-10-49637 | Spraberry (Trend Area) | Oxyrock Operating, LLC | 2 | 485K | 1.16M | Oct 2017 – Jul 2026 |
Gas, mcf lease total
Last 12 months 159,061 · prior 12 149,000(+7%)
Oil, barrels lease total
Last 12 months 14,083 · prior 12 16,606(-15%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Crownquest Operating, LLCOct 2017 → Jul 2024
- 2Oxyrock Operating, LLCAug 2024 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 821990-98 | Drill | Crownquest Operating, LLC | Jul 20, 2018 | Jan 23, 2017 | Oct 7, 2017 | 10,000 |
| 821990-99 | Drill | Crownquest Operating, LLC | Jan 11, 2017 | Jan 23, 2017 | Oct 7, 2017 | 10,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-49637 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,494 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 1,756 | 738 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 3,285 | -791 |
| Glorieta | 4,227 | -1,733 |
| Clear ForkCLEARFORK - SEVERE WATER FLOWS | 4,791 | -2,297 |
| Spraberry | 6,349 | -3,855 |
| Dean | 7,626 | -5,132 |
| Wolfcamp | 7,706 | -5,212 |
| Coleman Junction | — | — |
| Leonard | — | — |
| Seven Rivers | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,671 | 16,344 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 950 | 17.5 | 1,100 S |
| 9.625 | 7,904 | 12.25 | 800 S |
| 5.5 | 16,364 | 8.5 | 2,125 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 | Sep 12, 2018 | Jul 7, 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 42-227-38976 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-227-38976 → 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.
Muhly B 161242-227-38910
0.1 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,760 | 739 |
| San Andres | 3,313 | -814 |
| Glorieta | 4,495 | -1,996 |
| Clear Fork | 5,244 | -2,745 |
| Spraberry | 7,149 | -4,650 |
| Dean | 8,739 | -6,240 |
| Wolfcamp | 8,833 | -6,334 |
| Leonard | — |
10 TOPS · FIRST 8
Muhly 1612B42-227-39086
0.2 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,759 | 739 |
| San Andres | 3,196 | -698 |
| Glorieta | 4,222 | -1,724 |
| Clear Fork | 4,791 | -2,293 |
| Spraberry | 6,339 | -3,841 |
| Dean | 7,625 | -5,127 |
| Wolfcamp | 7,711 | -5,213 |
| Seven Rivers | — |
10 TOPS · FIRST 8
Muhly 1612 Unit42-227-38874
0.3 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,757 | 744 |
| San Andres | 3,193 | -692 |
| Glorieta | 4,161 | -1,660 |
| Clear Fork | 4,775 | -2,274 |
| Spraberry | 6,340 | -3,839 |
| Wolfcamp | 7,522 | -5,021 |
| Dean | 7,635 | -5,134 |
| Coleman Junction | — |
10 TOPS · FIRST 8
Miscanthus 161242-227-39307
0.6 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,799 | 692 |
| San Andres | 3,189 | -698 |
| Glorieta | 4,282 | -1,791 |
| Clear Fork | 4,788 | -2,297 |
| Spraberry | 6,348 | -3,857 |
| Dean | 7,648 | -5,157 |
| Wolfcamp | 7,722 | -5,231 |
| Leonard | — |
10 TOPS · FIRST 8
WRS Wild Rye 212442-227-39359
0.6 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,800 | 696 |
| San Andres | 3,207 | -711 |
| Glorieta | 4,239 | -1,743 |
| Clear Fork | 4,772 | -2,276 |
| Spraberry | 6,356 | -3,860 |
| Dean | 7,642 | -5,146 |
| Wolfcamp | 7,718 | -5,222 |
| Silurian (undifferentiated) | — |
15 TOPS · FIRST 8
WRS Wild Rye 2124C42-227-39357
0.6 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,780 | 716 |
| San Andres | 3,178 | -682 |
| Glorieta | 4,278 | -1,782 |
| Clear Fork | 4,809 | -2,313 |
| Spraberry | 6,356 | -3,860 |
| Dean | 7,640 | -5,144 |
| Wolfcamp | 7,722 | -5,226 |
| Coleman Junction | — |
10 TOPS · FIRST 8
WRS Wheatgrass 212442-227-39379
0.6 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,804 | 692 |
| San Andres | 3,207 | -711 |
| Glorieta | 4,240 | -1,744 |
| Clear Fork | 4,774 | -2,278 |
| Spraberry | 6,356 | -3,860 |
| Dean | 7,638 | -5,142 |
| Wolfcamp | 7,722 | -5,226 |
| Seven Rivers | — |
10 TOPS · FIRST 8
Come-Thou-Fount 2223B42-227-39280
0.7 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 1,822 | 691 |
| San Andres | 3,215 | -702 |
| Glorieta | 4,209 | -1,696 |
| Clear Fork | 4,784 | -2,271 |
| Spraberry | 6,351 | -3,838 |
| Dean | 7,640 | -5,127 |
| Wolfcamp | 7,720 | -5,207 |
| Leonard | — |
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/22738976, documented in the API reference.