TEXAS · WELLS · PECOS COUNTY · ALLISON LEASE · API 42-371-38196 · DISTRICT 7B
Allison #23
Pecos County · Pinon (Overthrust) field · Producing · Vertical
Allison #23 (API 42-371-38196) is a well in Pecos County operated by Longfellow Energy LP, completed June 29, 2008 and listed as producing on the RRC schedule, shut in October 1, 2025.
The RRC has issued one drilling permit, issued February 13, 2008, permitted to 9,697 ft.
It was permitted by Sandridge Energy, Inc. and has since transferred to Longfellow Energy LP on the wellbore schedule.
Completion filings report 6 formation tops, including Wolfcamp, Tesnus, Tesnus Lm, Up-Right 2nd Cab.
Its lease has reported 24 barrels of oil and 87.3K mcf of gas since June 2008, last reporting volume in September 2025.
Operator of record
Permitted by Sandridge Energy, Inc.; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 26, 2026
- Permits on file
- 38
- Phone
- (972) 590-9900
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Longfellow Energy LP |
| Production reports | Longfellow Energy, LPthrough Sep 2025 |
| Latest permit | Sandridge Energy, Inc.Feb 13, 2008 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,697
- total depth, ft
- 1
- permits on file
- Feb 13, 2008
- last permit issued
- Jun 29, 2008
- completed
- 24
- cumulative oil, bbl
- 87.3K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2008 THROUGH Sep 2025
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 29, 2008
- Shut in
- Oct 1, 2025
- 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 |
|---|---|---|---|---|---|---|
| Allison G-10-245314 | Pinon (Overthrust) | Longfellow Energy, LP | 1 | 24 | 87.3K | Jun 2008 – Sep 2025 |
Gas, mcf lease total
Last 12 months 695 · prior 12 792(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Sandridge Energy, Inc.Jun 2008 → May 2009
- 2Sandridge Expl. and Prod., LLCJun 2009 → Feb 2016
- 3Occidental W TX Overthrust, Inc.Mar 2016 → Dec 2021
- 4Longfellow Energy, LPJan 2022 → Sep 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 654639-99 | Drill | Sandridge Energy, Inc. | Feb 5, 2008 | Feb 13, 2008 | Apr 6, 2008 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 29, 2008 | Allison G-10-245314 | Pinon (Overthrust) | Longfellow Energy LP | Producing · shut in Oct 1, 2025 | 9,697 |
Formation tops
As filed on W-2/G-1. Subsea from 4,213 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wolfcamp | 3,226 | 987 |
| Tesnus | 6,326 | -2,113 |
| Tesnus LM | 7,752 | -3,539 |
| UP-Right 2ND Cab | 8,418 | -4,205 |
| Woods Hollow Limestone Marker | 9,012 | -4,799 |
| Over-Turned 2ND Cab | 9,129 | -4,916 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,170 | 4,208 | Perforated |
| 4,720 | 4,740 | Perforated |
| 9,020 | 9,060 | Perforated |
| 9,156 | 9,366 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,450 | 12.25 | 930 S |
| 7 | 7,895 | 8.75 | 805 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 | Mar 10, 2009 | Jan 26, 2009 | Yes |
| 00 | Mar 2, 2009 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Jun 6, 2011. Sonic. 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 |
|---|---|---|---|---|
| ACOUSTIC POROSITYSpans Tesnus Lm, Up-Right 2nd Cab, Woods Hollow Limestone Marker, Over-Turned 2nd Cab | TIFF | 7,882 to 9,692 | Jun 6, 2011run May 17, 2008 | 2.47 |
"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 42-371-38196 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-38196 → 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/37138196, documented in the API reference.