42-391-01055

O'BRIEN, J.M.

REFUGIO County · District 2 · CAMBRIAN MANAGEMENT, LTD.

Permits

2

Max Depth

4,387 ft

First Permit

1988-02-24

Latest Activity

2009-05-07

Lifespan

21 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

Shut-In

Plugged

Production Summary

Cum Oil

bbl

Cum Gas

mcf

First Production

1993-01

Last Production

2017-03

Lease Production

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

Formation Tops (2) Elevation 66 ft (GR)

CSV
FormationTop Depth (MD)Subsea (+above / −below SL)
L-4 SAND1,870 ft-1,804 ft
L-13 SAND2,570 ft-2,504 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)

IntervalType
1,870–1,880 ftPerforated

Casing (6)

SizeSet DepthCement
13.375"305 ft
13.375"305 ft
10.75"1,297 ft
10.75"1,297 ft
7"4,366 ft650 sx
7"4,366 ft650 sx

Permit History (2)

Applications (2)

#680677 A CAMBRIAN MANAGEMENT, LTD.
received 2009-04-23
#341678 A SUN EXPL. & PROD. CO.-CORPUS
received 1988-01-21

Records & Logs

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

W-2/G-1 1988-05-09 log on file
W-2/G-1 1988-07-01
W-2/G-1 1975-06-04
W-2/G-1 1984-01-12

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 REFUGIO County.

Well Details

Well Number
52
Max Depth
4,387 ft
Drill Type
Vertical
County
REFUGIO
District
2

Operator

Location
MCCAULLEY
P-5 Status
Active (filed 2025-06-17)
Cum Oil (all leases)
3,829,799 bbl
Cum Gas (all leases)
1,544,534 mcf
Activities
OPRS/O
Total Permits
107