WELL · 42-269-31566 · DISTRICT 8
Pen Branch (Upper Strawn) Unit #4
King County · Pen Branch (U. Strawn) field · Vertical
Pen Branch (Upper Strawn) Unit #4 (API 42-269-31566) is a plugged well in King County, plugged February 6, 2019, last operated by Miocene Oil & Gas Ltd..
The RRC has issued one drilling permit, issued January 2, 1986, permitted to 6,200 ft.
It was permitted by Crego Exploration and has since transferred to Miocene Oil & Gas Ltd. on the wellbore schedule.
Completion filings report 2 formation tops, including Dotham Ls, Strawn.
Its lease has reported 115K barrels of oil and 7.65K mcf of gas since January 1993, last reporting in July 2026. The lease carries 14 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Crego Exploration; the EWA schedule now lists a different operator.
Englewood, CO · P-5 Y, filed May 29, 2025 · (303) 809-1945
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Miocene Oil & Gas Ltd. |
| Production reports | Miocene Oil & Gas, Ltd.through Feb 2015 |
| Latest permit | Crego ExplorationJan 2, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,200
- total depth, ft
- 1
- permits on file
- Jan 2, 1986
- last permit issued
- Feb 1, 1986
- completed
- 115K
- cumulative oil, bbl
- 7.65K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Feb 1, 1986
- Shut in
- —
- Plugged
- Feb 6, 2019
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 14 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Pen Branch (Upper Strawn) Unit O-11-66110 | Pen Branch (U. Strawn) | Miocene Oil & Gas, Ltd. | 14 | 115K | 7.65K | Jan 1993 – 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.
- 1Hunt Oil CompanyJan 1993 → Mar 2000
- 2BP Prod. Corp.Apr 2000 → Mar 2002
- 3Newton Corp.,theApr 2002 → May 2005
- 4CH-Seon Inc.Jun 2005 → Feb 2006
- 5Miocene Oil & Gas, Ltd.Mar 2006 → Feb 2015
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 294174-99 | Drill | Crego Exploration | Jan 2, 1986 | Jan 2, 1986 | Jan 2, 1986 | 6,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-11-66110 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,712 ft elevation.Download CSV →
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,360 | 5,368 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 222 | 12.25 | 266 S |
| 5.5 | 5,595 | 7.875 | 425 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 | Jan 18, 1988 | Feb 13, 1986 | Yes |
| 00 | Jan 15, 1988 | — | — |
| 00 | Mar 5, 1986 | Feb 13, 1986 | Yes |
| 00 | Feb 25, 1986 | — | — |
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 42-269-31566 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-269-31566 → 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/26931566, documented in the API reference.