TEXAS · WELLS · WHEELER COUNTY · O'BRIEN LEASE · API 42-483-31764 · DISTRICT 08
O Brien #1021
Wheeler County · Lott Ranch (14500) field · Temp Abandoned · Vertical
O Brien #1021 (API 42-483-31764) is a well in Wheeler County operated by Unbridled Resources LLC, completed May 6, 2005 and listed as temp abandoned on the RRC schedule, shut in July 1, 2012.
The RRC has issued one drilling permit, issued September 27, 2004, permitted to 13,100 ft.
It was permitted by Chesapeake Operating, Inc. and has since transferred to Unbridled Resources LLC on the wellbore schedule.
Completion filings report 4 formation tops, including B. Heebner, Tonkawa, Missourian, Des Moines.
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Chesapeake Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Active (A)
- P-5 last filed
- Dec 17, 2025
- Permits on file
- 6
- Phone
- (318) 751-3917
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Unbridled Resources LLC |
| Production reports | Chesapeake Operating, Inc.through Jun 2012 |
| Latest permit | Chesapeake Operating, Inc.Sep 27, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,100
- total depth, ft
- 1
- permits on file
- Sep 27, 2004
- last permit issued
- May 6, 2005
- completed
- 0
- cumulative oil, bbl
- 207K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2005 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 6, 2005
- Shut in
- Jul 1, 2012
- 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 G-14-209982 | Lott Ranch (14500) | Unbridled Resources, LLC | 1 | 0 | 207K | Apr 2005 – Jul 2026 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.May 2005 → Jun 2012
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 551541-99 | Drill | Chesapeake Operating, Inc. | Sep 27, 2004 | Sep 27, 2004 | Mar 21, 2005 | 15,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 6, 2005 | O Brien G-14-209982 | Lott Ranch (14500) | Unbridled Resources LLC | Temp Abandoned · shut in Jul 1, 2012 | 13,100 |
Formation tops
As filed on W-2/G-1. Subsea from 2,489 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| B. Heebner | 8,863 | -6,374 |
| Tonkawa | 9,532 | -7,043 |
| Missourian | 10,054 | -7,565 |
| Des Moines | 11,825 | -9,336 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,885 | 12,995 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 927 | 11 | 610 S |
| 4.5 | 13,100 | 7.875 | 610 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 | Oct 12, 2005 | Jul 12, 2005 | Yes |
| 00 | Aug 11, 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 42-483-31764 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-483-31764 → 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/48331764, documented in the API reference.