O'BRIEN

Oil · District 03 · Lease #13545

Operator: RAMTEX ENERGY LLC

Fields: GIDDINGS (AUSTIN CHALK-3)

Cum Oil

24k BBL

Cum Gas

356k MCF

casinghead

Wells

1

Production

1993-01 — 2017-11

Peak Month

1993-03

Production History

Cum Oil: 23,694 BBL Cum Gas: 355,631 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

206 BBL/mo

Di (annual)

10.2%

b-factor

0.0

EUR

24,027 BBL

R-squared

0.437

type

exponential

Operator History (from monthly production reports)

2021-05 — 2026-07 NITRO OIL & GAS, LLC 63 mo

2014-08 — 2021-04 RAMTEX ENERGY LLC 81 mo

2002-12 — 2014-07 CHAPARRAL ENERGY, L.L.C. 140 mo

2001-06 — 2002-11 MISSION RESOURCES CORPORATION 18 mo

1996-04 — 2001-05 BELLWETHER EXPLORATION COMPANY 62 mo

1993-01 — 1996-03 HAMPTON RESOURCES CORPORATION 39 mo

Wells (1)

WELL#	API	OPERATOR	PERMITS	DEPTH	LAST_ISSUED
1	42-051-30807	NITRO OIL & GAS LLC	2	8,662	1988-10-14