42-479-36004

Final Completion

VAQUILLAS RANCH A4

WEBB County · District 4 · CONOCO INC. · VAQUILLAS RANCH (LOBO CONS.)

Permits

Max Depth

12,600 ft

First Permit

1994-01-04

Latest Activity

1997-04-11

Lifespan

3 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1994-04-19

Shut-In

—

Plugged

—

EWA / Production operator mismatch

Scheduling: CONOCO INC. ≠ Production: HILCORP ENERGY COMPANY (reported 2026-04)

Resolved via: production → HILCORP ENERGY COMPANY

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1994-04

Last Production

2026-07

Operator History

Chain of Custody

CONOCO INC. 1994-2002→ CONOCOPHILLIPS COMPANY 2003-2010→ HILCORP ENERGY COMPANY 2019-2026

Lease Production

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

Formation Tops (6) Elevation 652 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
QUEEN CITY	3,986 ft	-3,334 ft
CARRIZO WILCOX (Carrizo)	6,286 ft	-5,634 ft
BASE OF LOWER WILCOX (Wilcox)	10,543 ft	-9,891 ft
BASE OF LWR. WILCOX	10,543 ft	-9,891 ft
LOBO UNCONFORMITY	10,543 ft	-9,891 ft
WILLS POINT	12,164 ft	-11,512 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 (5)

Interval	Type
10,964–10,994 ft	Perforated
11,218–11,222 ft	Perforated
11,218–11,276 ft	Perforated
11,266–11,276 ft	Perforated
12,002–12,030 ft	Perforated

Casing (3)

Size	Set Depth	Cement
9.625"	522 ft	225 sx
7"	8,816 ft	225 sx
5"	12,219 ft	250 sx

Permit History (2)

#460911 Recompletion Final Completion

VAQUILLAS RANCH A4 · 12,223 ft

1997-04-11

Spud 1997-02-13

#419859 Drill Final Completion

VAQUILLAS RANCH A4 · 12,600 ft

1994-01-04

Spud 1994-01-19

Applications (2)

#460911 A CONOCO INC.

received 1997-04-09

#419859 A CONOCO INC.

received 1994-01-04

Records & Logs

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

W-2/G-1 2010-06-08

W-2/G-1 1998-04-06

W-2/G-1 1997-04-09 log on file

W-2/G-1 1997-04-15

W-2/G-1 1994-05-04 log on file

W-2/G-1 1994-08-30

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 WEBB County.

Well Details

Well Number: 121
Max Depth: 12,600 ft
Drill Type: Vertical
County: WEBB
District: 4
Operator: CONOCO INC.
Completed: 1994-04-19

Operator

Name: CONOCO INC
Location: HOUSTON
P-5 Status: Inactive (filed 2011-08-01)
Cum Oil (all leases): 47,167,767 bbl
Cum Gas (all leases): 1,813,222,856 mcf
Total Permits: 4,644