SCHWEINLE OIL UNIT

Oil · District 03 · Lease #21857

Operator: TANA OIL AND GAS CORPORATION

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

102k BBL

Cum Gas

422k MCF

casinghead

Wells

1

Production

1993-01 — 2025-06

Peak Month

1993-01

Production History

Cum Oil: 102,283 BBL Cum Gas: 421,767 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,516 BBL/mo

Di (annual)

109.0%

b-factor

0.6

EUR

62,601 BBL

R-squared

0.457

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

1999-11 — 2008-08 EMERALD OPERATING COMPANY, INC. 106 mo

1995-11 — 1999-10 ROSEWOOD RESOURCES, INC. 48 mo

1993-01 — 1995-10 TANA OIL AND GAS CORPORATION 34 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-149-32608	REDBUD E & P INC.	2	13,500	1992-03-31