42-501-31495

Final Completion Horizontal

CORNELL UNIT

YOAKUM County · District 8 · HILCORP ENERGY COMPANY · WASSON

Permits

Max Depth

5,600 ft

First Permit

1977-10-04

Latest Activity

2011-08-23

Lifespan

34 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

—

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: HILCORP ENERGY COMPANY ≠ Permit: XTO ENERGY INC.

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

EXXON CORP. 1993-2000→ EXXON MOBIL CORPORATION 2000-2000→ CROSS TIMBERS OPERATING COMPANY 2000-2001→ XTO ENERGY INC. 2001-2025→ HILCORP ENERGY COMPANY 2025-2026

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 (3) Elevation 3,619 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
QUEEN	3,698 ft	-79 ft
GRAYBURG	4,358 ft	-739 ft
SAN ANDRES	4,636 ft	-1,017 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 (1)

Interval	Type
4,711–6,893 ft	Open hole

Casing (2)

Size	Set Depth	Cement
10.75"	383 ft	350 sx
7"	5,390 ft	1,750 sx

Permit History (2)

#722124 Recompletion Final Completion

CORNELL UNIT · 5,600 ft

2011-08-23

Spud 2011-08-19

#9029 Drill

CORNELL UNIT · 5,400 ft

1977-10-04

Spud 1978-04-30

Applications (2)

#722124 A XTO ENERGY INC.

received 2011-08-11

#9029 A CORNELL OIL CO.

received 1977-10-04

Records & Logs

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

W-2/G-1 2011-12-14 log on file

W-2/G-1 1988-09-12

W-2/G-1 1978-08-09

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 YOAKUM County.

Well Details

Well Number: 3181H
Max Depth: 5,600 ft
Drill Type: Horizontal
County: YOAKUM
District: 8
Operator: HILCORP ENERGY COMPANY

Operator

Name: HILCORP ENGY CO
Location: HOUSTON
P-5 Status: X (filed 2026-03-27)
Cum Oil (all leases): 75,699,281 bbl
Cum Gas (all leases): 1,779,939,645 mcf
Activities: CSGD/G, CSGD/P, G/PUR, GTHS/C, GTHS/G, GTHS/O, OPRS/G, OPRS/O
Total Permits: 3,436