42-115-32378

Final Completion

ECHOLS (SPRABERRY) UNIT

DAWSON County · District 8 · CGS OPERATING LLC · ECHOLS (SPRABERRY)

Permits

Max Depth

9,000 ft

First Permit

1986-04-24

Latest Activity

2020-12-07

Lifespan

35 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

2022-01-03

Shut-In

—

Plugged

2022-03-10

EWA / Production operator mismatch

Scheduling: CGS OPERATING LLC ≠ Production: MAMMOTH EXPLORATION LLC (reported 2021-09)

EWA / Permit operator mismatch

Scheduling: CGS OPERATING LLC ≠ Permit: MAMMOTH EXPLORATION LLC

Resolved via: scheduling → CGS OPERATING LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2023-05

Injection / Disposal

DAWSON County disposal market →

H-1 Injection Plugged 2022-03-24 UIC #000068862 permitted 1995-01-11

Permitted Volume

500 bbl/d

Max Pressure

1,000 psi

Injection Interval

8,195–8,316 ft

Injected (12mo)

—

Monthly injected volume (bbl, from H-10 filings through 2021-08-01)

Seismicity: no M2+ earthquakes recorded within 10 km in the last 24 months · TexNet catalog

Operator History

Chain of Custody

BRIDGE OIL COMPANY, L. P. 1993-1994→ PARKER & PARSLEY DEVELOPMENT L.P 1994-1995→ PARKER & PARSLEY PRODUCING L.P. 1995-1997→ PIONEER RESOURCES PRODUCING, L.P 1997-1998→ GREAT WESTERN DRILLING COMPANY 1998-2005→ APEX MINERALS CO. 2005-2005→ KIMBROUGH ENGINEERING CO, LLC 2005-2008→ SAGEBRUSH OILANDGAS COMPANY,LLC 2008-2010→ SABER OIL & GAS VENTURES, LLC 2010-2018→ MAMMOTH EXPLORATION LLC 2018-2021

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 (5) Elevation 2,958 ft (KB)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	2,790 ft	+168 ft
SAN ANDRES	4,370 ft	-1,412 ft
CLEARFORK (Clear Fork)	6,272 ft	-3,314 ft
U/SPRAYBERRY	7,879 ft	-4,921 ft
L/SPRAYBERRY	8,449 ft	-5,491 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

✓ 42-115-33878 B&E 268 · MID-STATES OPERATING COMPANY

0.4 mi

Yates 2,777'San Andres 4,700'Canyon —Dean —Mississippian —Devonian —Pennsylvanian —Silurian (undifferentiated) —Wolfcamp —Spraberry —

✓ 42-115-32230 ECHOLS (SPRABERRY) UNIT · MAMMOTH EXPLORATION LLC

0.6 mi

Yates 2,765'San Andres 4,340'San Andres 4,344'Clear Fork 6,198'Clear Fork 6,210'Spraberry 7,828'U/SPRABERRY 7,838'Spraberry 8,400'L/SPRABERRY 8,406'

✓ 42-115-34030 EAGLE RARE 3-23 · BURLESON PETROLEUM, INC.

1.3 mi

Yates 2,763'San Andres 4,460'Spraberry 7,867'Silurian (undifferentiated) —Dean —Mississippian —Devonian —Pennsylvanian —Wolfcamp —Canyon —

✓ 42-115-33524 CLAY 10 · PARSLEY ENERGY OPERATIONS, LLC

1.3 mi

Spraberry 7,890'Wolfcamp 9,373'Strawn 10,666'Mississippian 11,011'Fusselman 11,976'Fusselman 12,082'Fusselman 12,170'

✓ 42-115-33793 CROCKETT · EXL PETROLEUM OPERATING INC.

1.4 mi

San Andres 5,127'Spraberry 8,289'Dean 9,252'Wolfcamp 9,437'Yates —Canyon —Mississippian —Devonian —Pennsylvanian —Silurian (undifferentiated) —

✓ 42-115-33896 ACRADIA A UNIT · EOG RESOURCES, INC.

1.5 mi

Silurian (undifferentiated) —Spraberry —Dean —San Andres —Canyon —Yates —Mississippian —Devonian —Pennsylvanian —Wolfcamp —

✓ 42-115-33895 ACRADIA A UNIT · EOG RESOURCES, INC.

1.5 mi

Yates 2,802'San Andres 4,437'Clear Fork 6,328'Spraberry 7,924'Dean —Canyon —Wolfcamp —Pennsylvanian —Mississippian —Devonian —

✓ 42-115-34012 PATRICIA BRINE · TALL CITY BRINE LLC

1.8 mi

Yates 2,720'Devonian —Pennsylvanian —Wolfcamp —Silurian (undifferentiated) —Spraberry —San Andres —Canyon —Dean —Mississippian —

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 (2)

Interval	Type
8,195–8,203 ft	Perforated
8,304–8,316 ft	Perforated

Casing (3)

Size	Set Depth	Cement
13.375"	365 ft	350 sx
9.625"	4,450 ft	600 sx
4.5"	9,000 ft	1,150 sx

Permit History (2)

#866260 Reclass Final Completion

ECHOLS (SPRABERRY) UNIT · 9,000 ft

2020-12-07

Spud 1986-05-25

#301404 Drill Final Completion

ECHOLS, CARSON "B" · 9,000 ft

1986-04-24

Applications (2)

#866260 A MAMMOTH EXPLORATION LLC

received 2020-12-01

#301404 A DAVIS & CARR ENERGY CO.

received 1986-04-22

Records & Logs

6 completion filings on record · 2 with log images at RRC.

W-2/G-1 2022-01-10

W-2/G-1 1990-05-25

W-2/G-1 1986-11-05 log on file

W-2/G-1 1989-09-21

W-2/G-1 1986-11-05 log on file

W-2/G-1 1986-11-13

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 32.577128

Lon -102.040788

Well Details

Well Number: 801
Max Depth: 9,000 ft
Drill Type: Vertical
County: DAWSON
District: 8
Operator: CGS OPERATING LLC
Completed: 2022-01-03

Operator

Name: CGS OPER, LLC
Location: KILGORE
P-5 Status: Inactive (filed 2023-10-18)
Cum Oil (all leases): 540,900 bbl
Cum Gas (all leases): — mcf
Total Permits: 45