WELL · 42-317-43177 · DISTRICT 8

Gunsmoke 1-40 C #3LA

N

Martin County · Spraberry (Trend Area) field  · Horizontal

Gunsmoke 1-40 C #3LA (API 42-317-43177) is a horizontal well in Martin County operated by Diamondback E&P LLC, completed December 2, 2020.

The RRC has issued one drilling permit, issued August 10, 2020, permitted to 10,000 ft.

It was permitted by Guidon Energy Mgmt Services LLC and has since transferred to Diamondback E&P LLC on the wellbore schedule.

Completion filings report 11 formation tops, including Santa Rosa, Yates, Queen, Grayburg.

Its lease has reported 421K barrels of oil and 916K mcf of gas since December 2020, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.

Operator of record

Diamondback E&P LLC

Permitted by Guidon Energy Mgmt Services 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 scheduleDiamondback E&P LLC
Production reportsDiamondback E&P LLCthrough Apr 2026
Latest permitGuidon Energy Mgmt Services LLCAug 10, 2020

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

10,000
total depth, ft
1
permits on file
Aug 10, 2020
last permit issued
Dec 2, 2020
completed
421K
cumulative oil, bbl
916K
cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Dec 2020 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule
OFF SCHEDULE
Completed
Dec 2, 2020
Shut in
—
Plugged
—

Surface location

32.251641, -101.911166

OpenStreetMap → ·  Google Maps →

Permit surface location from the RRC GIS record, in Martin County.

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 2 wells in total, so volumes are shared.Why →

LeaseFieldReporting operatorWellsOil, bblGas, mcfReported
Gunsmoke 1-40 C O-10-55932Spraberry (Trend Area)Diamondback E&P LLC2421K916KDec 2020 – Jul 2026

Oil, barrels lease total

Last 12 months 21,755 · prior 12 39,202(-45%)

05K10K202420252026

Gas, mcf lease total

Last 12 months 164,283 · prior 12 172,985(-5%)

010K20K30K202420252026

Chain of custody

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

  1. 1Diamondback E&P LLCAug 2021 → Apr 2026

Permits

PermitTypeOperatorReceivedIssuedSpudDepth
864474-99DrillGuidon Energy Mgmt Services LLCJul 29, 2020Aug 10, 2020Sep 19, 202010,000

Completions

CompletedLeaseFieldOperatorStatusDepth
—— O-10-55932————
—— O-10-55932————

Formation tops

As filed on W-2/G-1. Subsea from 2,827 ft elevation.Download CSV →

FormationMD ftSubsea
Santa Rosa1,2381,589
Yates2,580247
Queen3,475-648
Grayburg3,595-768
San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H3,952-1,125
Clear ForkCLEARFORK6,294-3,467
Spraberry7,535-4,708
Dean8,854-6,027
Wolfcamp9,061-6,234
Cisco——
Pennsylvanian——

Perforations

Perforated and open-hole intervals.

FromToType
9,34119,340Perforated

Casing

Strings as reported, shallowest first.

Casing inSet atHole inCement
13.3751,42917.51,220 S
10.756,22212.25900 S
5.519,4367.8752,065 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 →

SuffixFiledW-2 / G-1 dateLogs referenced
00Dec 20, 2021Nov 15, 2021Yes
00Aug 18, 2021Jul 22, 2021Yes
00Aug 13, 2021Jul 22, 2021Yes

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.

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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.

Open the cross-section →

Gunsmoke 1-40 (Alloc 1-NH)42-317-43178

0.0 KM · Guidon Energy Mgmt Services LLC · Section with this well →

Santa Rosa1,2381,587
Yates2,580245
Queen3,475-650
Grayburg3,595-770
San Andres3,952-1,127
Clear Fork6,294-3,469
Spraberry7,535-4,710
Dean8,854-6,029

11 TOPS · FIRST 8

Gunsmoke 1-40 B42-317-43440

0.0 KM · Diamondback E&P LLC · Section with this well →

Santa Rosa1,2381,587
Yates2,580245
Queen3,475-650
Grayburg3,595-770
San Andres3,952-1,127
Spraberry7,535-4,710
Pennsylvanian—
Wolfcamp—

10 TOPS · FIRST 8

Gunsmoke 1-40 A42-317-43439

0.0 KM · Diamondback E&P LLC · Section with this well →

Santa Rosa1,2371,589
Yates2,585241
Queen3,682-856
Grayburg4,140-1,314
San Andres4,349-1,523
Clear Fork6,604-3,778
Spraberry7,532-4,706
Dean—

11 TOPS · FIRST 8

Quattle-Rogers 6G42-317-43301

1.3 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa1,2551,596
Yates2,597254
Queen3,423-572
Grayburg3,858-1,007
San Andres4,099-1,248
Spraberry7,522-4,671
Dean8,828-5,977
Wolfcamp9,034-6,183

10 TOPS · FIRST 8

Quattle-Rogers 6B42-317-43296

1.3 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa1,2701,581
Yates2,600251
Queen3,422-571
Grayburg3,857-1,006
San Andres4,095-1,244
Spraberry7,515-4,664
Dean8,826-5,975
Wolfcamp9,000-6,149

10 TOPS · FIRST 8

Quattle-Rogers 6I42-317-43303

1.3 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa1,2681,583
Yates2,602249
Queen3,426-575
Grayburg3,864-1,013
San Andres4,105-1,254
Spraberry7,513-4,662
Dean8,816-5,965
Wolfcamp9,022-6,171

10 TOPS · FIRST 8

Quattle-Rogers 6C42-317-43298

1.3 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa1,2751,576
Yates2,595256
Queen3,425-574
Grayburg3,859-1,008
San Andres4,099-1,248
Spraberry6,248-3,397
Dean8,794-5,943
Wolfcamp8,958-6,107

10 TOPS · FIRST 8

Quattle-Rogers 6D42-317-43300

1.3 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa1,2881,563
Yates2,590261
Queen3,424-573
Grayburg3,855-1,004
San Andres4,094-1,243
Clear Fork6,244-3,393
Spraberry7,506-4,655
Dean8,810-5,959

15 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/31743177, documented in the API reference.