42-211-33530

SHUT IN

LOCKHART A 36

HEMPHILL County · District 10 · PRESIDIO PETROLEUM LLC · FELDMAN (TONKAWA)

Permits

Max Depth

12,800 ft

First Permit

2006-03-01

Latest Activity

2007-04-27

Lifespan

1 yrs

Regulatory Status

Schedule

ON SCHEDULE

Completion

2007-05-18

Shut-In

—

Plugged

—

P-5 Org Status: Active

EWA / Permit operator mismatch

Scheduling: PRESIDIO PETROLEUM LLC ≠ Permit: UPLAND RESOURCES, INC.

Resolved via: scheduling → PRESIDIO PETROLEUM LLC

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

ENRON OIL & GAS COMPANY 1993-1997→ UPLAND RESOURCES, INC. 1997-2007→ GRANITE OPERATING COMPANY 2008-2012→ APACHE CORPORATION 2012-2019→ PRESIDIO PETROLEUM LLC 2019-2025

Lease Production

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

Formation Tops (2) Elevation 2,588 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
DOUGLAS	6,988 ft	-4,400 ft
TONKAWA	7,710 ft	-5,122 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
7,717–7,776 ft	Perforated
9,950–10,100 ft	Perforated

Casing (2)

Size	Set Depth	Cement
8.625"	2,032 ft	1,065 sx
4.5"	12,294 ft	630 sx

Permit History (2)

#637387 Recompletion Final Completion

LOCKHART 36 · 7,750 ft

2007-04-27

Spud 2007-04-30

#615042 Drill Final Completion

LOCKHART 36 · 12,800 ft

2006-03-01

Spud 2006-03-06

Applications (2)

#637387 A UPLAND RESOURCES, INC.

received 2007-04-18

#615042 A UPLAND RESOURCES, INC.

received 2006-03-01

Records & Logs

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

W-2/G-1 2007-10-25 log on file

W-2/G-1 2008-02-12

W-2/G-1 2006-11-01 log on file

W-2/G-1 2006-11-13

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: 6
Max Depth: 12,800 ft
Drill Type: Vertical
County: HEMPHILL
District: 10
Operator: PRESIDIO PETROLEUM LLC
Completed: 2007-05-18

Operator

Name: PRESIDIO PETRO LLC
Location: CANADIAN
P-5 Status: Active (filed 2026-05-01)
Cum Oil (all leases): 5,427,043 bbl
Cum Gas (all leases): 184,872,360 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 13