WELL · 42-003-41566 · DISTRICT 8
Uls BB 4-10 #1
Andrews County · Spraberry (Trend Area) field · Producing · Vertical
Uls BB 4-10 #1 (API 42-003-41566) is a well in Andrews County operated by Sabalo II Operating LLC, completed July 23, 2010 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued March 31, 2010, permitted to 11,232 ft.
It was permitted by Devon Energy Production CO, L.P. and has since transferred to Sabalo II Operating LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Clear Fork, Wolfcamp, Strawn.
Its lease has reported 28.2K barrels of oil and 33.7K mcf of gas since July 2010, last reporting in July 2026.
Operator of record
Permitted by Devon Energy Production Co, L.P.; the EWA schedule now lists a different operator.
- Based in
- Corpus Chrsti, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 25, 2026
- Permits on file
- 73
- Phone
- (361) 888-7708
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Sabalo II Operating LLC |
| Production reports | Sabalo II Operating, LLCthrough Apr 2026 |
| Latest permit | Devon Energy Production Co, L.P.Mar 31, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,232
- total depth, ft
- 2
- permits on file
- Mar 31, 2010
- last permit issued
- Jul 23, 2010
- completed
- 28.2K
- cumulative oil, bbl
- 33.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jul 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 23, 2010
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
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 |
|---|---|---|---|---|---|---|
| Uls BB 4-10 O-10-40556 | Spraberry (Trend Area) | Sabalo II Operating, LLC | 1 | 28.2K | 33.7K | Jul 2010 – Jul 2026 |
Oil, barrels lease total
Last 12 months 699 · prior 12 881(-21%)
Gas, mcf lease total
Last 12 months 1,039 · prior 12 1,012(+3%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Production Co, L.P.Jul 2010 → Aug 2016
- 2Pioneer Natural Res. USA, Inc.Sep 2016 → Jan 2017
- 3Zarvona Energy LLCFeb 2017 → Sep 2025
- 4Sabalo II Operating, LLCOct 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 693735-98 | Drill | Devon Energy Production Co, L.P. | Sep 21, 2010 | Mar 31, 2010 | May 5, 2010 | 11,400 |
| 693735-99 | Drill | Devon Energy Production Co, L.P. | Mar 30, 2010 | Mar 31, 2010 | May 5, 2010 | 11,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 23, 2010 | Uls BB 4-10 O-10-40556 | Spraberry (Trend Area) | Sabalo II Operating LLC | Producing | 11,232 |
Formation tops
As filed on W-2/G-1. Subsea from 3,095 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK | 7,950 | -4,855 |
| Wolfcamp | 9,990 | -6,895 |
| Strawn | 10,988 | -7,893 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,050 | 10,500 | Perforated |
| 10,612 | 11,050 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 12.75 | 324 | 14.75 | 150 S |
| 8.625 | 4,962 | 11 | 1,425 S |
| 5.5 | 11,232 | 7.875 | 955 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 6, 2011 | Nov 11, 2010 | 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 42-003-41566 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-003-41566 → 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.
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/00341566, documented in the API reference.