42-211-31295

Final Completion

HEFLEY

HEMPHILL County · District 10 · APACHE CORPORATION · BUFFALO WALLOW (GRANITE WASH)

Permits

Max Depth

14,800 ft

First Permit

1980-11-18

Latest Activity

2002-10-10

Lifespan

22 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

2013-01-11

EWA / Production operator mismatch

Scheduling: APACHE CORPORATION ≠ Production: GRANITE OPERATING COMPANY (reported 2011-05)

EWA / Permit operator mismatch

Scheduling: APACHE CORPORATION ≠ Permit: UPLAND RESOURCES, INC.

Resolved via: scheduling → APACHE CORPORATION

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2013-01

Operator History

Chain of Custody

CAMBRIDGE PRODUCTION, INC. 1993-2002→ UPLAND RESOURCES, INC. 2002-2007→ GRANITE OPERATING COMPANY 2008-2011

Lease Production

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

Formation Tops (1) Elevation 2,604 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
GRANITE WASH	11,438 ft	-8,834 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
11,438–12,107 ft	Perforated
14,224–14,234 ft	Perforated

Casing (3)

Size	Set Depth	Cement
8.625"	3,207 ft	2,600 sx
2.875"	13,350 ft	—
5.5"	14,060 ft	500 sx

Permit History (2)

#524438 Recompletion Final Completion

HEFLEY · 14,800 ft

2002-10-10

Spud 2002-10-22

#99608 Drill Final Completion

HEFLEY · 14,800 ft

1980-11-18

Spud 1981-01-10

Applications (2)

#524438 A UPLAND RESOURCES, INC.

received 2002-10-08

#99608 A CAMBRIDGE & NAIL

received 1980-11-18

Records & Logs

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

W-2/G-1 2003-07-18 log on file

W-2/G-1 2003-09-05

W-2/G-1 1981-04-10

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 HEMPHILL County.

Well Details

Well Number: 1039
Max Depth: 14,800 ft
Drill Type: Vertical
County: HEMPHILL
District: 10
Operator: APACHE CORPORATION

Operator

Name: APC OPER PARTNERSHIP
Location: HOUSTON
P-5 Status: Active (filed 2025-12-03)
Cum Oil (all leases): 615,928,793 bbl
Cum Gas (all leases): 2,702,742,169 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 9,664