DEVON JOHNS UNIT

Oil · District 7B · Lease #31486

Operator: EXTEX OPERATING COMPANY

Cum Oil

47k BBL

Cum Gas

64k MCF

casinghead

Wells

1

Production

2014-05 — 2026-03

Peak Month

2014-06

Production History

Cum Oil: 46,812 BBL Cum Gas: 64,074 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

611 BBL/mo

Di (annual)

14.0%

b-factor

0.0

EUR

52,126 BBL

R-squared

0.690

type

exponential

Operator History (from monthly production reports)

2026-03 — 2026-07 EXTEX OPERATING COMPANY 5 mo
2014-05 — 2026-02 CHOLLA PETROLEUM, INC. 142 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1EXTEX OPERATING COMPANY17,4992014-01-27