42-353-31765

Final Completion

COCHRAN-RAILROAD UNIT

NOLAN County · District 7 · GOODROCK NATURAL RESOURCES LLC · SUGGS (ELLENBURGER)

Permits

Max Depth

7,000 ft

First Permit

1985-02-13

Latest Activity

1995-11-22

Lifespan

11 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1985-04-23

Shut-In

—

Plugged

2001-09-26

EWA / Permit operator mismatch

Scheduling: GOODROCK NATURAL RESOURCES LLC ≠ Permit: ROBERTSON RESOURCES, INC.

Resolved via: scheduling → GOODROCK NATURAL RESOURCES LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2023-05

Injection / Disposal

H-1 Injection Plugged 2001-10-12 UIC #000084760 permitted 1996-04-29

Permitted Volume

1,000 bbl/d

Max Pressure

2,050 psi

Injection Interval

4,118–4,125 ft

Injected (12mo)

—

Operator History

Chain of Custody

ORYX ENERGY COMPANY 1993-1994→ SAMSON RESOURCES COMPANY 1994-1995→ SAMSON HYDROCARBONS COMPANY 1995-1996→ ROBERTSON RESOURCES, INC. 1995-1996→ SAMSON LONE STAR LP 1996-2007→ SAMSON LONE STAR, LLC 2007-2010→ THREE RIVERS OPERATING CO LLC 2011-2012→ COG OPERATING LLC 2012-2012→ LEGACY RESERVES OPERATING LP 2013-2018→ GOODROCK NATURAL RESOURCES, LLC 2018-2019

Lease Production

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

Formation Tops (1) Elevation 2,330 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
ELLENBURGER	6,657 ft	-4,327 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 ↗

Perforations (2)

Interval	Type
4,118–4,125 ft	Perforated
6,657–6,736 ft	Perforated

Casing (2)

Size	Set Depth	Cement
9.625"	363 ft	300 sx
5.5"	6,895 ft	1,650 sx

Permit History (2)

#442109 Recompletion Final Completion

COCHRAN, J. H. · 6,895 ft

1995-11-22

Spud 1995-11-28

#266829 Drill Final Completion

COCHRAN-RAILROAD UNIT · 7,000 ft

1985-02-13

Spud 1985-03-16

Applications (2)

#442109 A ROBERTSON RESOURCES, INC.

received 1995-11-20

#266829 A SUN EXPL. & PROD. CO.-ABILENE

received 1985-02-12

Records & Logs

4 completion filings on record.

W-2/G-1 1996-09-26

W-2/G-1 1985-06-06

W-2/G-1 1985-07-23

Completion packets + logs ↗ Wellbore filings ↗

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

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in NOLAN County.

Well Details

Well Number: 8A
Max Depth: 7,000 ft
Drill Type: Vertical
County: NOLAN
District: 7
Operator: GOODROCK NATURAL RESOURCES LLC
Completed: 1985-04-23

Operator

Name: GOODROCK NATURAL RES, LLC
Location: TULSA
P-5 Status: X (filed 2025-11-25)
Cum Oil (all leases): 499,198 bbl
Cum Gas (all leases): 30,099 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 59