WELL · 42-115-33133 · DISTRICT 8
O Brien A #1
Dawson County · Breedlove (Spraberry) field · Vertical
O Brien A #1 (API 42-115-33133) is a well in Dawson County operated by Roff Operating Company LLC, completed April 5, 2005.
The RRC has issued one drilling permit, issued December 29, 2004, permitted to 9,000 ft.
Completion filings report 2 formation tops, including Clear Fork, Spraberry.
Its 2 leases have reported 559K barrels of oil and 289K mcf of gas since April 2005, last reporting in July 2026. The leases carry 12 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Nov 12, 2025
- Permits on file
- 102
- Phone
- (713) 658-1038
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Roff Operating Company LLC |
| Production reports | Ovintiv USA Inc.through Apr 2026 |
| Latest permit | Roff Operating Company, LLCDec 29, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,000
- total depth, ft
- 1
- permits on file
- Dec 29, 2004
- last permit issued
- Apr 5, 2005
- completed
- 559K
- cumulative oil, bbl
- 289K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2005 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 5, 2005
- Shut in
- —
- Plugged
- —
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 2 leases this well is completed on; they carry 12 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| East Milagro Unit O-10-40636 | Breedlove (Spraberry) | Ovintiv USA Inc. | 11 | 538K | 256K | May 2011 – Jul 2026 |
| O'Brien A O-10-37571 | Breedlove (Spraberry) | Roff Operating Company, LLC | 1 | 20.5K | 32.3K | Apr 2005 – Jul 2011 |
Oil, barrels lease total
Last 12 months 7,432 · prior 12 13,663(-46%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Roff Operating Company, LLCApr 2005 → Nov 2021
- 2Black Swan Operating, LLCDec 2021 → May 2023
- 3Ovintiv USA Inc.Jun 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 555360-99 | Drill | Roff Operating Company, LLC | Dec 27, 2004 | Dec 29, 2004 | Mar 9, 2005 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-37571 | — | — | — | — |
| — | — O-10-40636 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| Clear ForkUPPER CLEARFORK | 6,011 |
| Spraberry | 7,900 |
| SpraberrySPRABERRY C | 8,196 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,198 | 8,212 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 417 | 17.5 | 350 S |
| 8.625 | 4,430 | 11 | 1,450 S |
| 5.5 | 8,479 | 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 | Apr 25, 2011 | Jun 30, 2005 | Yes |
| 00 | Jan 12, 2006 | Jun 30, 2005 | Yes |
| 00 | Oct 21, 2005 | — | — |
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 42-115-33133 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-33133 → 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/11533133, documented in the API reference.