WELL · 42-173-30238 · DISTRICT 8

Calverley E #2

Calverley E #2 (API 42-173-30238) is a permitted well in Glasscock County filed by JM Cox Resources, L.P.; no completion report is on file yet.

The RRC has issued one drilling permit, issued August 21, 2014, permitted to 8,600 ft.

Its 2 leases have reported 223K barrels of oil and 827K mcf of gas since January 1993, last reporting in July 2026. The leases carry 9 wells, so these are lease totals, not this well alone.

Operator of record

JM Cox Resources, L.P.

Midland, TX · P-5 Y, filed Dec 7, 2018 · 180 permits on file · (432) 682-9435

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	none
Production reports	Diamondback E&P LLCthrough Apr 2026
Latest permit	JM Cox Resources, L.P.Aug 21, 2014

8,600: total depth, ft
1: permits on file
Aug 21, 2014: last permit issued
—: completed
223K: cumulative oil, bbl
827K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: —
Shut in: —
Plugged: —

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 9 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
Calverley -E- O-10-23419	Spraberry (Trend Area)	RSP Permian, LLC	4	27K	88.1K	Jan 1993 – Mar 2015

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.

1Cox, John L.Jan 1993 → Sep 2003
2JM Cox Resources, L.P.Oct 2003 → Aug 2014
3Adventure Expl Partners II, LLCJun 2014 → Aug 2014
4RSP Permian, LLCSep 2014 → Jul 2018
5COG Operating LLCAug 2018 → Oct 2019
6Diamondback E&P LLCNov 2019 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
788543-99	Recompletion	JM Cox Resources, L.P.	Jun 3, 2014	Aug 21, 2014	—	8,600

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-10-23419	—	—	—	—
—	— O-10-45474	—	—	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
—	8,314	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	2,285	11	1,400 S
4.5	8,380	7.875	650 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 29, 2015	May 2, 1975	—
00	Jan 12, 1984	May 2, 1975	—

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 42-173-30238 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-173-30238 → 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/17330238, documented in the API reference.