WELL · 42-173-36361 · DISTRICT 8
Calverley 12 #1A
Glasscock County · Spraberry (Trend Area) field · Producing · Vertical
Calverley 12 #1A (API 42-173-36361) is a well in Glasscock County operated by Diamondback E&P LLC, completed June 27, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued February 20, 2014, permitted to 12,000 ft.
It was permitted by Adventure Expl Partners II, LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Queen, San Andres, Spraberry.
Its lease has reported 196K barrels of oil and 739K mcf of gas since June 2014, last reporting in July 2026. The lease carries 5 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Adventure Expl Partners II, LLC; the EWA schedule now lists a different operator.
Midland, TX · P-5 Y, filed Mar 4, 2026 · 5,237 permits on file · (855) 247-5920
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Apr 2026 |
| Latest permit | Adventure Expl Partners II, LLCFeb 20, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 12,000
- total depth, ft
- 1
- permits on file
- Feb 20, 2014
- last permit issued
- Jun 27, 2014
- completed
- 196K
- cumulative oil, bbl
- 739K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2014 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 27, 2014
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: 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 lease this well is completed on; they carry 5 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Calverley 12 O-10-45474 | Spraberry (Trend Area) | Diamondback E&P LLC | 5 | 196K | 739K | Jun 2014 – Jul 2026 |
Oil, barrels lease total
Last 12 months 5,869 · prior 12 7,011(-16%)
Gas, mcf lease total
Last 12 months 10,382 · prior 12 17,179(-40%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Adventure Expl Partners II, LLCJun 2014 → Aug 2014
- 2RSP Permian, LLCSep 2014 → Jul 2018
- 3COG Operating LLCAug 2018 → Oct 2019
- 4Diamondback E&P LLCNov 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 778666-99 | Drill | Adventure Expl Partners II, LLC | Jan 31, 2014 | Feb 20, 2014 | Apr 15, 2014 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-45474 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,699 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,130 | 569 |
| Queen | 2,778 | -79 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 3,380 | -681 |
| Spraberry | 6,419 | -3,720 |
| Mississippian | 10,585 | -7,886 |
| Clear ForkCLEARFORK | — | — |
| Glorieta | — | — |
| Grayburg | — | — |
| Santa Rosa | — | — |
| Seven Rivers | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,300 | 11,200 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 422 | 17.5 | 400 S |
| 8.625 | 4,017 | 11 | 1,190 S |
| 5.5 | 11,505 | 7.875 | 1,465 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 | Dec 9, 2014 | Sep 10, 2014 | Yes |
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 42-173-36361 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-173-36361 → 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/17336361, documented in the API reference.