FORRISTALL -B-

Oil · District 7C · Lease #4896

Operator: THREE RIVERS OPERATING CO LLC

Cum Oil

86k BBL

Cum Gas

1.0M MCF

casinghead

Wells

8

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 86,229 BBL Cum Gas: 1,011,224 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

478 BBL/mo

Di (annual)

6.5%

b-factor

0.0

EUR

84,590 BBL

R-squared

0.672

type

exponential

Operator History (from monthly production reports)

2021-02 — 2026-07 EXTEX OPERATING COMPANY 66 mo
2013-01 — 2021-01 LEGACY RESERVES OPERATING LP 97 mo
2012-08 — 2012-12 COG OPERATING LLC 5 mo
2010-04 — 2012-07 THREE RIVERS OPERATING CO LLC 28 mo
2004-04 — 2010-03 CHESAPEAKE OPERATING, INC. 72 mo
2004-01 — 2004-03 CONCHO EXPLORATION INC 3 mo
2000-03 — 2003-12 RICKS EXPLORATION, INC. 46 mo
1999-01 — 2000-02 RISING STAR ENERGY, L.L.C. 14 mo
1997-03 — 1998-12 ALTURA ENERGY LTD. 22 mo
1993-01 — 1997-02 SHELL WESTERN E&P INC. 50 mo

Wells (8)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8EXTEX OPERATING COMPANY15,1001981-03-19
11EXTEX OPERATING COMPANY36,1951979-08-13
2EXTEX OPERATING COMPANY16,3101978-08-30
142-105-02533EXTEX OPERATING COMPANY------
4W42-105-10962EXTEX OPERATING COMPANY------
542-105-30066EXTEX OPERATING COMPANY------
642-105-30128EXTEX OPERATING COMPANY------
742-105-30173EXTEX OPERATING COMPANY------