SRUBAR OIL UNIT

Oil · District 03 · Lease #21923

Operator: TANA OIL AND GAS CORPORATION

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

202k BBL

Cum Gas

852k MCF

casinghead

Wells

2

Production

1993-02 — 2025-10

Peak Month

1993-05

Production History

Cum Oil: 202,352 BBL Cum Gas: 852,220 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

5,816 BBL/mo

Di (annual)

133.7%

b-factor

0.6

EUR

119,570 BBL

R-squared

0.611

type

hyperbolic

Operator History (from monthly production reports)

2025-06 — 2026-07 REDBUD E & P, INC. 14 mo

2019-08 — 2025-05 INEOS USA OIL & GAS LLC 70 mo

2017-09 — 2019-07 CRAWFORD HUGHES OPERATING CO. 23 mo

2008-09 — 2017-08 ENERVEST OPERATING, L.L.C. 108 mo

1999-09 — 2008-08 EMERALD OPERATING COMPANY, INC. 108 mo

1995-11 — 1999-08 ROSEWOOD RESOURCES, INC. 46 mo

1993-02 — 1995-10 TANA OIL AND GAS CORPORATION 33 mo

Wells (2)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-149-32721	REDBUD E & P, INC.	2	12,000	1993-01-11
1U	42-149-32721	REDBUD E & P, INC.	2	12,000	1993-01-11