SHADROCK, H. B.

Oil · District 01 · Lease #10481

Operator: UNDERBRINK OIL

Fields: FAIRFIELD

Cum Oil

1k BBL

Cum Gas

18 MCF

casinghead

Wells

8

Production

1993-01 — 2017-10

Peak Month

2004-08

Production History

Cum Oil: 1,176 BBL Cum Gas: 18 MCF

RRC production reported through Apr 2026 · recent months incomplete

Operator History (from monthly production reports)

2021-06 — 2026-07 PETROSAURUS, INC. 62 mo

2010-01 — 2021-05 CIVRON PETROLEUM RES., LLC 137 mo

2004-06 — 2009-12 UNDERBRINK OIL 67 mo

1993-01 — 2004-05 CALK, ROGER D. 137 mo

Wells (8)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-029-36348	PETROSAURUS INC.	1	1,650	1985-03-11
2	42-029-36345	PETROSAURUS INC.	1	1,650	1985-03-11
3	42-029-36344	PETROSAURUS INC.	1	1,650	1985-03-11
4	42-029-36343	PETROSAURUS INC.	1	1,650	1985-03-11
5	42-029-36342	PETROSAURUS INC.	1	1,650	1985-03-11
6	42-029-36341	PETROSAURUS INC.	1	1,650	1985-03-11
7	42-029-36340	PETROSAURUS INC.	1	1,650	1985-03-11
8	42-029-36346	PETROSAURUS INC.	1	1,650	1985-03-11