TEXAS · WELLS · MARTIN COUNTY · CORTESE LEASE · API 42-317-36856 · DISTRICT 7B

Cortese #1

Shut in

Martin County · Spraberry (Trend Area) field · Shut In · Vertical

Fields on the latest permit · any of 3: Field 9172500 · Breedlove,south(strawn) · Spraberry (Trend Area); Not one formation; the well must be completed in one of them, and no target formation is stated.

Cortese #1 (API 42-317-36856) is a well in Martin County operated by Diamondback E&P LLC, completed April 2, 2013 and listed as shut in on the RRC schedule, shut in February 1, 2024.

The RRC has issued one drilling permit (amended twice), issued May 17, 2011, permitted to 11,340 ft.

It was permitted by W&T Offshore, Inc. and has since transferred to Diamondback E&P LLC on the wellbore schedule.

Completion filings report 6 formation tops, including Clear Fork, Spraberry, Dean, Wolfcamp.

Its lease has reported 38K barrels of oil and 37.8K mcf of gas since April 2012, last reporting volume in July 2023.

Operator of record

Diamondback E&P LLC

Permitted by W&T Offshore, Inc.; the EWA schedule now lists a different operator.

Based in: Midland, TX
P-5 status: Active – Extension (X)
P-5 last filed: May 4, 2026
Permits on file: 5,254
Phone: (432) 221-7400

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SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Diamondback E&P LLC
Production reports	Diamondback E&P LLCthrough Jul 2023
Latest permit	W&T Offshore, Inc.May 17, 2011

The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.

11,340: total depth, ft
3: permits on file
May 17, 2011: last permit issued
Apr 2, 2013: completed
38K: cumulative oil, bbl
37.8K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · MAY 2012 THROUGH JUL 2023

On this page13 formation tops Lease production

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Apr 2, 2013
Shut in: Feb 1, 2024
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.

Wells nearby

Withinmiles

Every well with a location on file around this well, in any state, nearest first.

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Texas locations come from drilling permits, so most older Texas wells have none and are not listed.

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
Cortese O-10-43035	Spraberry (Trend Area)	Diamondback E&P LLC	1	38K	37.8K	Apr 2012 – Jul 2023

Oil, barrels lease total

Last 12 months 0 · prior 12 0

Gas, mcf lease total

Last 12 months 0 · prior 12 0

Wells named Cortese

Diamondback E&P LLC's other wells filed under this lease name in Martin County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.

Loading the lease's wells

Chain of custody

Every operator that reported production on this well's lease, in order.

1W&T Offshore, Inc.May 2012 → Dec 2014
2Ajax Resources, LLCJan 2015 → Oct 2018
3Diamondback E&P LLCNov 2018 → Jul 2023

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
716381-97	Drill	W&T Offshore, Inc.	Feb 29, 2012	May 17, 2011	Mar 11, 2012	12,990
716381-98	Drill	W&T Offshore, Inc.	Jun 3, 2011	May 17, 2011	—	12,990
716381-99	Drill	W&T Offshore, Inc.	May 13, 2011	May 17, 2011	—	12,990

Completions

Completed	Lease	Field	Operator	Status	Depth
Apr 2, 2013	Cortese O-10-43035	Spraberry (Trend Area)	Diamondback E&P LLC	Shut In · shut in Feb 1, 2024	11,340

Formation tops

As filed on W-2/G-1. Subsea from 2,887 ft elevation.Download CSV →

Formation	MD ft	Subsea
Clear ForkCLEARFORK	6,175	-3,288
Clear ForkCLEARFORK	7,941	-5,054
Spraberry	8,019	-5,132
Dean	9,388	-6,501
Dean	9,394	-6,507
Wolfcamp	9,518	-6,631
Wolfcamp	9,529	-6,642
WolfcampLOWER WOLFCAMP	10,310	-7,423
WolfcampLOWER WOLFCAMP	10,347	-7,460
Cline	10,499	-7,612
Cline	10,600	-7,713
Strawn	10,945	-8,058
Strawn	10,953	-8,066

Perforations

Perforated and open-hole intervals.

From	To	Type
8,060	10,921	Perforated
9,538	10,921	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	375	17.5	380 S
8.625	5,229	11	600 S
5.5	11,340	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. 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 →

RRC record date	W-2 / G-1 date	Logs referenced
Mar 28, 2018	Mar 23, 2018	—
Jan 17, 2014	Apr 24, 2013	—
Aug 30, 2013	Aug 31, 2012	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 42-317-36856 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-317-36856 → scanned completion filings

Log images filed since 2004 open from the RRC's log search for this well; none are loaded here for it. The University Lands library has no per-well link: then paste it into its search.

Find logs withinmiles of this well:List →Map →

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/31736856, documented in the API reference.