WELL · 42-173-31585 · DISTRICT 8
Calverley 36B #1
Glasscock County · Spraberry (Trend Area) field · Vertical
Calverley 36b #1 (API 42-173-31585) is a well in Glasscock County operated by Crescent Energy Operating LLC, completed April 26, 1984.
The RRC has issued 2 drilling permits between 1984 and 2019, permitted to 8,300 ft.
It was permitted by Parsley Energy Operations, LLC and has since transferred to Crescent Energy Operating LLC on the wellbore schedule.
Completion filings report 7 formation tops, including Anhydrite, Yates, San Andres, Clear Fork.
Its 3 leases have reported 90K barrels of oil and 40.1K mcf of gas since January 1993, last reporting in July 2026. The leases carry 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Parsley Energy Operations, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed May 4, 2026 · 54 permits on file · (713) 953-8604
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Crescent Energy Operating LLC |
| Production reports | Laredo Petroleum, Inc.through Mar 2022 |
| Latest permit | Parsley Energy Operations, LLCMar 14, 2019 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,300
- total depth, ft
- 2
- permits on file
- Mar 14, 2019
- last permit issued
- Apr 26, 1984
- completed
- 90K
- cumulative oil, bbl
- 40.1K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 26, 1984
- Shut in
- —
- Plugged
- —
Surface location
31.886557, -101.599124
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Glasscock County.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 3 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Calverley 36B G-10-292431 | Spraberry (Trend Area) | Crescent Energy Operating, LLC | 1 | 0 | 60 | Mar 2022 – Jul 2026 |
| Calverley 36B O-10-51368 | Spraberry (Trend Area) | Crescent Energy Operating, LLC | 2 | 5.21K | 5.37K | May 2017 – Jul 2026 |
| 8102 JV-P Calverley -36- O-10-28900 | Blalock Lake, SE (Wolfcamp) | Parsley Energy Operations, LLC | 1 | 84.8K | 34.7K | Jan 1993 – Jul 2019 |
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.
- 1BTA Oil ProducersJan 1993 → Jan 2008
- 2BTA Oil Producers, LLCFeb 2008 → Sep 2016
- 3Parsley Energy Operations, LLCOct 2016 → Nov 2020
- 4Laredo Petroleum, Inc.Oct 2021 → Mar 2022
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 851038-99 | Field transfer | Parsley Energy Operations, LLC | Mar 13, 2019 | Mar 14, 2019 | Apr 6, 1984 | 8,230 |
| 234065-99 | Drill | BTA Oil Producers | Mar 29, 1984 | Mar 29, 1984 | — | 8,300 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-292431 | — | — | — | — |
| — | — O-10-28900 | — | — | — | — |
| — | — O-10-51368 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,706 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Anhydrite | 1,260 | 1,446 |
| Yates | 1,990 | 716 |
| San Andres | 3,080 | -374 |
| Clear Fork | 4,826 | -2,120 |
| U. Spraberry | 6,269 | -3,563 |
| U. Sprayberry | 6,269 | -3,563 |
| WolfcampWOLFCAMP LIME | 8,004 | -5,298 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,046 | 8,072 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 405 | 17.5 | 450 S |
| 8.625 | 3,030 | 11 | 1,200 S |
| 5.5 | 8,230 | 7.875 | 1,200 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 | May 27, 2022 | Mar 30, 2022 | — |
| 00 | May 17, 2019 | Apr 30, 2019 | — |
| 00 | Jun 4, 1984 | May 3, 1984 | — |
| 00 | May 15, 1984 | May 3, 1984 | — |
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 42-173-31585 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-31585 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Calverley 36B-25A-A42-173-37624
0.2 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 2,878 | -164 |
| Clear Fork | 5,012 | -2,298 |
| Spraberry | 6,288 | -3,574 |
| Santa Rosa | — | |
| Yates | — | |
| Wichita-Albany | — | |
| Seven Rivers | — | |
| Queen | — |
10 TOPS · FIRST 8
Calverley 36B-25A-A42-173-37623
0.2 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 2,875 | -161 |
| Clear Fork | 5,009 | -2,295 |
| Spraberry | 6,286 | -3,572 |
| Seven Rivers | — | |
| Yates | — | |
| Wichita-Albany | — | |
| Glorieta | — | |
| Santa Rosa | — |
10 TOPS · FIRST 8
Calverley 36B-25A-A42-173-37621
0.2 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 2,839 | -125 |
| Clear Fork | 5,003 | -2,289 |
| Spraberry | 6,274 | -3,560 |
| Queen | — | |
| Seven Rivers | — | |
| Wichita-Albany | — | |
| Yates | — | |
| Santa Rosa | — |
10 TOPS · FIRST 8
Calverley 36B42-173-32642
0.5 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 2,942 | -240 |
| Clear Fork | 4,726 | -2,024 |
| U. Spraberry | 6,232 | -3,530 |
| L. Spraberry | 6,848 | -4,146 |
| Wolfcamp | 7,802 | -5,100 |
| Wolfcamp | 7,802 | -5,100 |
| Wolfcamp | 7,956 | -5,254 |
| Wolfcamp | 7,956 | -5,254 |
FT Sumter42-173-38949
1.2 KM · Crownquest Operating, LLC · Section with this well →
| Rustler | 1,141 | 1,562 |
| Yates | 1,943 | 760 |
| Grayburg | 3,053 | -350 |
| San Andres | 3,480 | -777 |
| Glorieta | 4,089 | -1,386 |
| Clear Fork | 4,492 | -1,789 |
| Spraberry | 6,344 | -3,641 |
| Seven Rivers | — |
10 TOPS · FIRST 8
Calverley 36A42-173-32776
1.2 KM · Parsley Energy Operations, LLC · Section with this well →
| U. Sprby | 6,146 | -3,451 |
| U. Sprayberry | 6,146 | -3,451 |
| U. Spraberry | 6,146 | -3,451 |
| L. Spraberry | 6,780 | -4,085 |
| L. Sprby | 6,780 | -4,085 |
| L.sprayberry | 6,780 | -4,085 |
| Wolfcamp | 7,620 | -4,925 |
| Wlfcmp Shale | 7,620 | -4,925 |
12 TOPS · FIRST 8
FT Sumter42-173-38948
1.2 KM · Crownquest Operating, LLC · Section with this well →
| Rustler | 1,143 | 1,560 |
| Yates | 1,947 | 756 |
| Grayburg | 3,060 | -357 |
| San Andres | 3,478 | -775 |
| Glorieta | 4,108 | -1,405 |
| Clear Fork | 4,517 | -1,814 |
| Spraberry | 6,337 | -3,634 |
| Seven Rivers | — |
10 TOPS · FIRST 8
FT Sumter42-173-38947
1.2 KM · Crownquest Operating, LLC · Section with this well →
| Rustler | 1,113 | 1,591 |
| Yates | 1,934 | 770 |
| Wolfcamp | 7,817 | -5,113 |
| Strawn | — | |
| Santa Rosa | — | |
| Cambrian | — | |
| Precambrian (Undifferentiated) | — | |
| Pennsylvanian | — |
10 TOPS · FIRST 8
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/17331585, documented in the API reference.