TEXAS · WELLS · DAWSON COUNTY · O'BRIEN "B" LEASE · API 42-115-33145 · DISTRICT 7B
O Brien B #1
Dawson County · Breedlove (Spraberry) field · Producing · Vertical
O Brien B #1 (API 42-115-33145) is a well in Dawson County operated by Ovintiv USA Inc., completed April 4, 2006 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 21, 2005, permitted to 8,447 ft.
It was permitted by Roff Operating Company, LLC and has since transferred to Ovintiv USA Inc. on the wellbore schedule.
Completion filings report 2 formation tops, including Clear Fork, Spraberry.
Its lease has reported 58.7K barrels of oil and 45.2K mcf of gas since April 2006, last reporting volume in April 2026.
Operator of record
Permitted by Roff Operating Company, LLC; the EWA schedule now lists a different operator.
- Based in
- Denver, CO
- P-5 status
- Active (A)
- P-5 last filed
- Dec 12, 2025
- Permits on file
- 1,391
- Phone
- (720) 876-5176
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ovintiv USA Inc. |
| Production reports | Ovintiv USA Inc.through Apr 2026 |
| Latest permit | Roff Operating Company, LLCSep 21, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,447
- total depth, ft
- 1
- permits on file
- Sep 21, 2005
- last permit issued
- Apr 4, 2006
- completed
- 58.7K
- cumulative oil, bbl
- 45.2K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2006 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 4, 2006
- 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 |
|---|---|---|---|---|---|---|
| O'Brien "B" O-10-37713 | Breedlove (Spraberry) | Ovintiv USA Inc. | 1 | 58.7K | 45.2K | Apr 2006 – Apr 2026 |
Oil, barrels lease total
Last 12 months 956 · prior 12 1,018(-6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Roff Operating Company, LLCApr 2006 → Nov 2021
- 2Black Swan Operating, LLCDec 2021 → May 2023
- 3Ovintiv USA Inc.Jun 2023 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 606747-99 | Drill | Roff Operating Company, LLC | Sep 21, 2005 | Sep 21, 2005 | Feb 1, 2006 | 9,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 4, 2006 | O Brien B O-10-37713 | Breedlove (Spraberry) | Ovintiv USA Inc. | Producing | 8,447 |
Formation tops
As filed on W-2/G-1. Subsea from 2,965 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Clear ForkCLEARFORK | 6,034 | -3,069 |
| Spraberry | 7,900 | -4,935 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,192 | 8,206 | Perforated |
| 8,298 | 8,311 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 428 | 17.5 | 450 S |
| 8.625 | 6,010 | 11 | 500 S |
| 5.5 | 8,447 | 7.875 | 470 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. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Sep 19, 2006 | Apr 7, 2006 | Yes |
| 00 | May 18, 2006 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Feb 13, 2007. Resistivity. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| ResistivityHIGH RESOLUTION INDUCTION LOGSpans Clear Fork, Spraberry | TIFF | 200 to 8,430 | Feb 13, 2007run Feb 16, 2006 | — |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-115-33145 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-115-33145 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/11533145, documented in the API reference.