WASHAM UNIT

Oil · District 7B · Lease #30664

Operator: EXTEX OPERATING COMPANY

Cum Oil

280k BBL

Cum Gas

0 MCF

Wells

1

Production

2011-02 — 2026-03

Peak Month

2020-10

Production History

Cum Oil: 279,905 BBL Cum Gas: 0 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,844 BBL/mo

Di (annual)

13.0%

b-factor

0.1

EUR

187,179 BBL

R-squared

0.560

type

hyperbolic

Operator History (from monthly production reports)

2026-03 — 2026-07 EXTEX OPERATING COMPANY 5 mo
2011-02 — 2026-02 CHOLLA PETROLEUM, INC. 181 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1EXTEX OPERATING COMPANY15,9992010-06-18