UMPHRESS,C. F. ET AL

Oil · District 08 · Lease #39361

Operator: RRIG EXPLORATION, LLC

Cum Oil

19k BBL

Cum Gas

148k MCF

casinghead

Wells

2

Production

2009-02 — 2019-03

Peak Month

2010-01

Production History

Cum Oil: 18,713 BBL Cum Gas: 147,878 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,142 BBL/mo

Di (annual)

182.1%

b-factor

0.6

EUR

17,528 BBL

R-squared

0.814

type

hyperbolic

Operator History (from monthly production reports)

2019-03 — 2026-07 RRIG EXPLORATION, LLC 89 mo
2017-06 — 2019-02 ROVER PETROLEUM OPERATING, LLC 21 mo
2013-01 — 2017-05 MERIT ENERGY COMPANY 53 mo
2009-02 — 2012-12 CIMAREX ENERGY CO. OF COLORADO 47 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2MERIT ENERGY COMPANY29,4362009-03-23
1RRIG EXPLORATION LLC29,5002009-03-13