ARMSTRONG, ELIZABETH

Oil · District 08 · Lease #26431

Operator: THREE RIVERS OPERATING CO LLC

Cum Oil

136k BBL

Cum Gas

23k MCF

casinghead

Wells

6

Production

1993-01 — 2026-04

Peak Month

2012-04

Production History

Cum Oil: 136,159 BBL Cum Gas: 23,277 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

735 BBL/mo

Di (annual)

21.3%

b-factor

0.0

EUR

41,437 BBL

R-squared

0.695

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
2004-05 — 2010-03 CHESAPEAKE OPERATING, INC. 71 mo
1993-01 — 2004-04 PERMIAN RESOURCES, INC. 136 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9EXTEX OPERATING COMPANY29,0002011-06-29
10EXTEX OPERATING COMPANY29,0002011-06-24
11EXTEX OPERATING COMPANY29,0002011-06-17
7EXTEX OPERATING COMPANY14,8001981-03-24
8EXTEX OPERATING COMPANY14,8001981-03-24
6EXTEX OPERATING COMPANY14,8001980-10-16