WELL · 42-317-41388 · DISTRICT 8
Billy 135A #4
Martin County · Spraberry (Trend Area) R 40 Exc field · Producing · Vertical
Billy 135a #4 (API 42-317-41388) is a well in Martin County operated by Owl Ops LLC, completed November 19, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 10, 2018, permitted to 12,000 ft.
It was permitted by Crownquest Operating, LLC and has since transferred to Owl Ops LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Grayburg, San Andres, Spraberry.
Its lease has reported 98.1K barrels of oil and 358K mcf of gas since January 2018, 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.
Midland, TX · P-5 Y, filed Dec 4, 2025 · (432) 201-4773
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Owl Ops LLC |
| Production reports | Owl Ops LLCthrough Apr 2026 |
| Latest permit | Crownquest Operating, LLCMay 10, 2018 |
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
- May 10, 2018
- last permit issued
- Nov 19, 2018
- completed
- 98.1K
- cumulative oil, bbl
- 358K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 19, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
32.305451, -102.072285
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Martin 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 |
|---|---|---|---|---|---|---|
| Billy 135A O-10-51439 | Spraberry (Trend Area) R 40 Exc | Owl Ops LLC | 2 | 98.1K | 358K | Jan 2018 – Jul 2026 |
Oil, barrels lease total
Last 12 months 4,878 · prior 12 9,484(-49%)
Gas, mcf lease total
Last 12 months 27,871 · prior 12 43,762(-36%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Crownquest Operating, LLCJan 2018 → Jul 2024
- 2Oxyrock Operating, LLCAug 2024 → Mar 2026
- 3Owl Ops LLCApr 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 838400-99 | Drill | Crownquest Operating, LLC | Apr 4, 2018 | May 10, 2018 | Jun 21, 2018 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-51439 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,829 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,866 | -37 |
| Grayburg | 4,484 | -1,655 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,800 | -1,971 |
| Spraberry | 8,006 | -5,177 |
| Dean | 9,300 | -6,471 |
| Wolfcamp | 9,538 | -6,709 |
| Atoka | 11,395 | -8,566 |
| Cisco | — | — |
| Queen | — | — |
| Santa Rosa | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,619 | 11,160 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 373 | 17.5 | 425 S |
| 8.625 | 5,437 | 11 | 1,175 S |
| 5.5 | 11,700 | 7.875 | 1,400 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 28, 2019 | Apr 9, 2019 | 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 42-317-41388 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-41388 → 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.
Billy 135A42-317-40954
0.5 KM · Crownquest Operating, LLC · Section with this well →
| Yates | 2,866 | -37 |
| Grayburg | 4,484 | -1,655 |
| San Andres | 4,800 | -1,971 |
| Spraberry | 8,006 | -5,177 |
| Strawn | 10,949 | -8,120 |
| Atoka | 11,370 | -8,541 |
| Cisco | — | |
| Santa Rosa | — |
10 TOPS · FIRST 8
Dove L42-317-39217
1.0 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,382 | 1,478 |
| Yates | 2,865 | -5 |
| Queen | 3,777 | -917 |
| Grayburg | 4,305 | -1,445 |
| San Andres | 4,418 | -1,558 |
| Spraberry | 8,973 | -6,113 |
| Dean | 9,368 | -6,508 |
| Wolfcamp | 9,644 | -6,784 |
10 TOPS · FIRST 8
Alldale A42-317-42335
1.6 KM · Diamondback E&P LLC · Section with this well →
| Santa Rosa | 1,396 | 1,431 |
| Yates | 2,874 | -47 |
| Queen | 3,819 | -992 |
| Grayburg | 3,969 | -1,142 |
| San Andres | 4,299 | -1,472 |
| Spraberry | 7,984 | -5,157 |
| Dean | 9,264 | -6,437 |
| Wolfcamp | 9,511 | -6,684 |
10 TOPS · FIRST 8
Paper Rings 136-137 A42-317-43110
1.7 KM · Diamondback E&P LLC · Section with this well →
| Yates | 2,855 | -24 |
| Grayburg | 3,967 | -1,136 |
| San Andres | 4,458 | -1,627 |
| Clear Fork | 6,559 | -3,728 |
| Spraberry | 7,931 | -5,100 |
| Dean | 9,242 | -6,411 |
| Wolfcamp | 9,510 | -6,679 |
| Queen | — |
10 TOPS · FIRST 8
Orson-Billy 139A42-317-44422
1.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,427 | 1,425 |
| Yates | 2,828 | 24 |
| Queen | 3,645 | -793 |
| Grayburg | 4,093 | -1,241 |
| San Andres | 4,430 | -1,578 |
| Clear Fork | 6,578 | -3,726 |
| Spraberry | 7,947 | -5,095 |
| Wolfcamp | — |
11 TOPS · FIRST 8
Orson-Billy 139B42-317-43099
1.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,427 | 1,425 |
| Yates | 2,823 | 29 |
| Queen | 3,643 | -791 |
| Grayburg | 4,096 | -1,244 |
| San Andres | 4,448 | -1,596 |
| Spraberry | 7,940 | -5,088 |
| Cisco | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
Orson-Billy 139C42-317-44424
1.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,426 | 1,425 |
| Yates | 2,827 | 24 |
| Queen | 3,648 | -797 |
| Grayburg | 4,100 | -1,249 |
| San Andres | 4,438 | -1,587 |
| Spraberry | 7,929 | -5,078 |
| Pennsylvanian | — | |
| Cisco | — |
10 TOPS · FIRST 8
Orson-Billy 139D42-317-44425
1.9 KM · Pioneer Natural Res. USA, Inc. · Section with this well →
| Santa Rosa | 1,427 | 1,425 |
| Yates | 2,828 | 24 |
| Queen | 3,638 | -786 |
| Grayburg | 4,101 | -1,249 |
| San Andres | 4,432 | -1,580 |
| San Andres | 4,432 | -1,580 |
| Spraberry | 7,938 | -5,086 |
| Cisco | — |
12 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/31741388, documented in the API reference.