WELL · 42-353-33142 · DISTRICT 7
Blackstone Sinclair #4
Nolan County · Sweetwater (Canyon Sand) field · Producing · Directional
Blackstone Sinclair #4 (API 42-353-33142) is a well in Nolan County operated by Lone Star Operations LLC, completed October 5, 2010 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued May 24, 2010, permitted to 6,999 ft.
It was permitted by Cholla Petroleum, Inc. and has since transferred to Lone Star Operations LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Flippen, B/Breckenridge, Canyon.
Its lease has reported 175K barrels of oil and 440K mcf of gas since October 2010, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cholla Petroleum, Inc.; the EWA schedule now lists a different operator.
Sweetwater, TX · P-5 Y, filed Jul 4, 2026 · (806) 801-2072
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Lone Star Operations LLC |
| Production reports | Lone Star Operations LLCthrough Mar 2026 |
| Latest permit | Cholla Petroleum, Inc.May 24, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,999
- total depth, ft
- 2
- permits on file
- May 24, 2010
- last permit issued
- Oct 5, 2010
- completed
- 175K
- cumulative oil, bbl
- 440K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 2010 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 5, 2010
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
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; they carry 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Blackstone Sinclair O-8-30610 | Sweetwater (Canyon Sand) | Lone Star Operations LLC | 7 | 175K | 440K | Oct 2010 – Jul 2026 |
Oil, barrels lease total
Last 12 months 1,801 · prior 12 1,335(+35%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cholla Petroleum, Inc.Oct 2010 → May 2024
- 2Lone Star Operations LLCJun 2024 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 696413-98 | Drill | Cholla Petroleum, Inc. | Dec 22, 2016 | May 24, 2010 | Jun 7, 2010 | 6,999 |
| 696413-99 | Drill | Cholla Petroleum, Inc. | May 21, 2010 | May 24, 2010 | Jun 7, 2010 | 6,999 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-30610 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,062 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Flippen | 3,925 | -1,863 |
| B/Breckenridge | 4,029 | -1,967 |
| Canyon | 5,387 | -3,325 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,392 | 5,404 | Perforated |
| 5,412 | 5,414 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 213 | 12.25 | 135 S |
| 4.5 | 4,281 | 7.875 | 650 S |
| 4.5 | 5,545 | 7.875 | 250 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 | Feb 15, 2011 | Oct 25, 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 42-353-33142 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-353-33142 → 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.
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/35333142, documented in the API reference.