42-371-32453

Final Completion

CHALKLEY

PECOS County · District 8 · OLSEN ENERGY INC. · LEHN-APCO SOUTH (ELLEN)

Permits

Max Depth

4,850 ft

First Permit

1977-12-30

Latest Activity

1991-06-07

Lifespan

13 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1978-02-03

Shut-In

—

Plugged

—

EWA / Permit operator mismatch

Scheduling: OLSEN ENERGY INC. ≠ Permit: PEDCO RESOURCES COMPANY

Resolved via: production → OLSEN ENERGY INC.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

1993-01

Last Production

2026-07

Operator History

Chain of Custody

PEDCO RESOURCES COMPANY 1993-1995→ MBR RESOURCES, INC. 1995-2006→ UNIT PETROLEUM COMPANY 2006-2014→ OLSEN ENERGY INC. 2016-2026

Lease Production

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

Formation Tops (4) Elevation 2,462 ft (GL)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
QUEENS	1,640 ft	+822 ft
SAN ANDRES	2,490 ft	-28 ft
WICHITA ALBANY (Wichita-Albany)	4,540 ft	-2,078 ft
ELLENBERGER (Ellenburger)	4,790 ft	-2,328 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
4,560–4,570 ft	Perforated
?–4,850 ft	Perforated

Casing (3)

Size	Set Depth	Cement
13.375"	425 ft	350 sx
5.5"	4,789 ft	560 sx
5.5"	4,789 ft	2,420 sx

Permit History (2)

#386695 Recompletion Final Completion

CHALKLEY · 4,850 ft

1991-06-07

Spud 1991-03-21

#15210 Drill Long String Casing

CHALKLEY · 4,750 ft

1977-12-30

Spud 1978-01-14

Applications (2)

#386695 A PEDCO RESOURCES COMPANY

received 1991-04-12

#15210 A LOVELADY, I. W.

received 1977-12-30

Records & Logs

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

W-2/G-1 1991-04-10 log on file

W-2/G-1 1978-02-24

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library 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 PECOS County.

Well Details

Well Number: 4
Max Depth: 4,850 ft
Drill Type: Vertical
County: PECOS
District: 8
Operator: OLSEN ENERGY INC.
Completed: 1978-02-03

Operator

Name: OLSEN ENGY INC
Location: BOERNE
P-5 Status: X (filed 2026-05-26)
Cum Oil (all leases): 4,690,558 bbl
Cum Gas (all leases): 40,548,531 mcf
Activities: OPRS/G, OPRS/O
Total Permits: 243