WELL · 42-173-31860 · DISTRICT 8
Calverley 26 #13
Glasscock County · Spraberry (Trend Area) field · Producing · Vertical
Calverley 26 #13 (API 42-173-31860) is a well in Glasscock County operated by Crescent Energy Operating LLC, completed June 24, 1985 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued May 24, 1985, permitted to 8,110 ft.
It was permitted by Bta Oil Producers and has since transferred to Crescent Energy Operating LLC on the wellbore schedule.
Completion filings report 6 formation tops, including San Andres, Clear Fork, U. Spraberry, L. Spraberry.
Its 2 leases have reported 679K barrels of oil and 1.32M mcf of gas since January 1993, last reporting in July 2026. The leases carry 13 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by BTA Oil Producers; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Aug 28, 2025
- Permits on file
- 54
- Phone
- (713) 337-4600
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Parsley Energy Operations LLC |
| Production reports | Crescent Energy Operating, LLCthrough Apr 2026 |
| Latest permit | BTA Oil ProducersMay 24, 1985 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,110
- total depth, ft
- 1
- permits on file
- May 24, 1985
- last permit issued
- Jun 24, 1985
- completed
- 679K
- cumulative oil, bbl
- 1.32M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 24, 1985
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 13 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Calverley 26 O-10-52971 | Spraberry (Trend Area) | Crescent Energy Operating, LLC | 4 | 10.1K | 7.18K | Dec 2019 – Jul 2026 |
| 7613 JV-P Calverley -26- O-10-28560 | Blalock Lake, SE (Wolfcamp) | Parsley Energy Operations, LLC | 9 | 669K | 1.31M | Jan 1993 – May 2020 |
Oil, barrels lease total
Last 12 months 1,520 · prior 12 1,643(-7%)
Gas, mcf lease total
Last 12 months 203 · prior 12 18(+1028%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1BTA Oil ProducersJan 1993 → Jan 2008
- 2BTA Oil Producers, LLCFeb 2008 → Sep 2016
- 3Parsley Energy Operations, LLCOct 2016 → Jan 2021
- 4Pioneer Natural Res. USA, Inc.Mar 2021 → Sep 2021
- 5Laredo Petroleum, Inc.Oct 2021 → Jan 2023
- 6Vital Energy, Inc.Feb 2023 → Dec 2025
- 7Crescent Energy Operating, LLCJan 2026 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 276243-99 | Drill | BTA Oil Producers | May 24, 1985 | May 24, 1985 | — | 8,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 24, 1985 | Calverley 26 O-10-52971 | Spraberry (Trend Area) | Crescent Energy Operating LLC | Producing | 8,110 |
| Jun 24, 1985 | 7613 JV-P Calverley -26- O-10-28560 | Blalock Lake SE (Wolfcamp) | Parsley Energy Operations LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,648 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| San Andres | 3,004 | -356 |
| Clear ForkCLEARFORK | 4,832 | -2,184 |
| U. Spraberry | 6,182 | -3,534 |
| L. Spraberry | 6,825 | -4,177 |
| L. Spraberry | 6,825 | -4,177 |
| WolfcampWOLFCAMP SHALE | 7,676 | -5,028 |
| WolfcampWOLFCAMP REEF | 7,938 | -5,290 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,942 | 8,005 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 415 | 17.5 | 450 S |
| 8.625 | 3,000 | 11 | 1,000 S |
| 5.5 | 8,110 | 7.875 | 1,100 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 | Feb 9, 2021 | Feb 2, 2021 | — |
| 00 | Feb 21, 2020 | Jan 6, 2020 | — |
| 00 | Feb 14, 2020 | Jan 6, 2020 | — |
| 00 | Jul 25, 1985 | Jul 2, 1985 | — |
| 00 | Jul 19, 1985 | — | — |
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 42-173-31860 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-31860 → 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/17331860, documented in the API reference.