42-461-32612

SHIRK, J.H. ESTATE

UPTON County · District 7 · ENDEAVOR ENERGY RESOURCES L.P.

Permits

Max Depth

10,100 ft

First Permit

1986-12-29

Latest Activity

2018-01-25

Lifespan

31 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

RAYDEN 1993-2006→ ENDEAVOR ENERGY RESOURCES L.P. 2006-2020

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil

production & DCA →

Formation Tops (9) Elevation 2,789 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
RUSTLER	1,530 ft	+1,259 ft
GRAYBURG	3,991 ft	-1,202 ft
SAN ANDRES	4,139 ft	-1,350 ft
LEONARD	4,940 ft	-2,151 ft
DEAN	7,470 ft	-4,681 ft
WOLFCAMP	7,568 ft	-4,779 ft
CISCO	8,600 ft	-5,811 ft
STRAWN	9,164 ft	-6,375 ft
BEND	9,485 ft	-6,696 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Offset Well Tops (nearest 8 wells with tops)

What nearby completed wells reported.

Cross-section

✓ 42-461-42761 SCOTT THOMAS · CUSTER & WRIGHT OPERATING, INC.

1.8 mi

Yates 2,790'Grayburg 3,980'San Andres 4,110'Spraberry 5,820'Wolfcamp 7,425'Strawn 8,475'Devonian —Ellenburger —Fusselman —

✓ 42-461-42745 LARISSA 1 · SUMMIT PETROLEUM LLC

3.5 mi

San Andres 4,317'Clear Fork 6,173'Spraberry 6,731'Wolfcamp —Strawn —Grayburg —Yates —Fusselman —Ellenburger —Devonian —

✓ 42-461-42728 TAYLOR 1 · SUMMIT PETROLEUM LLC

4.4 mi

San Andres 4,250'Clear Fork 6,100'Spraberry 6,706'Spraberry 7,364'Ellenburger —Fusselman —Devonian —Wolfcamp —Strawn —Grayburg —Yates —

✓ 42-461-43109 AMACKER 65-124 · CIVITAS PERMIAN OPERATING, LLC

4.4 mi

Yates 2,688'Grayburg 4,373'San Andres 4,599'Clear Fork 6,338'Spraberry 7,218'Wolfcamp 8,428'Strawn 10,190'Devonian 11,443'Fusselman —Ellenburger —

✓ 42-461-03452 JACOBS LIVESTOCK · TXP, INCORPORATED

5.3 mi

Rustler 1,335'San Andres 3,023'San Andres 3,386'Devonian 8,503'Ellenburger 10,405'Fusselman —Yates —Devonian —Wolfcamp —Strawn —Grayburg —Ellenburger — +1 more

✓ 42-461-40482 BYNUM 2 · PETROPLEX ENERGY INC.

6.2 mi

Yates 2,286'San Andres 4,019'Dean 7,911'Wolfcamp 8,056'Strawn 9,541'Wolfcamp —Fusselman —Ellenburger —Spraberry —Devonian —Strawn —Grayburg — +2 more

✓ 42-461-40802 CRUNCHY SNICKERS · CAPSTONE NATURAL RES II, LLC

6.5 mi

Yates 2,137'Grayburg 2,833'San Andres 3,048'Devonian —Fusselman —Strawn —Wolfcamp —Ellenburger —Spraberry —

✓ 42-461-43125 MAKENNA 2 · SUMMIT PETROLEUM LLC

6.6 mi

San Andres 4,112'Clear Fork 5,958'Spraberry 6,676'Spraberry 7,366'Fusselman —Grayburg —Yates —Strawn —Ellenburger —Devonian —Wolfcamp —

Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).

Perforations (1)

Interval	Type
9,583–9,606 ft	Perforated

Casing (3)

Size	Set Depth	Cement
13.375"	647 ft	660 sx
8.625"	4,130 ft	1,920 sx
5.5"	9,761 ft	1,185 sx

Permit History (2)

#835396 Recompletion

SHIRK, J.H. ESTATE · 9,761 ft

2018-01-25

#324213 Drill Final Completion

SHIRK, J. H. ESTATE · 10,100 ft

1986-12-29

Applications (2)

#835396 A ENDEAVOR ENERGY RESOURCES L.P.

received 2018-01-19

#324213 A POGO PRODUCING CO.

received 1986-12-11

Records & Logs

3 completion filings on record · 1 with log images at RRC.

W-2/G-1 2020-09-09

W-2/G-1 1987-03-20 log on file

W-2/G-1 1987-03-31

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

Google Maps → Explorer Map →

Lat 31.272412

Lon -102.160070

Well Details

Well Number: 6
Max Depth: 10,100 ft
Drill Type: Vertical
County: UPTON
District: 7
Operator: ENDEAVOR ENERGY RESOURCES L.P.

Operator

Name: ENDEAVOR ENGY RES L.P
Location: MIDLAND
P-5 Status: Active (filed 2026-06-12)
Cum Oil (all leases): 507,205,629 bbl
Cum Gas (all leases): 70,424,421 mcf
Total Permits: 6,190