GRISHAM "21"

Oil · District 08 · Lease #38526

Operator: QEP ENERGY COMPANY

Cum Oil

44k BBL

Cum Gas

54k MCF

casinghead

Wells

1

Production

2007-10 — 2026-04

Peak Month

2008-01

Production History

Cum Oil: 43,810 BBL Cum Gas: 53,974 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

444 BBL/mo

Di (annual)

16.8%

b-factor

0.4

EUR

47,010 BBL

R-squared

0.412

type

hyperbolic

Operator History (from monthly production reports)

2021-10 — 2026-07 DIAMONDBACK E&P LLC 58 mo
2017-12 — 2021-09 QEP ENERGY COMPANY 46 mo
2017-09 — 2017-11 JM COX RESOURCES, L.P. 3 mo
2007-10 — 2017-08 PIONEER NATURAL RES. USA, INC. 119 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1DIAMONDBACK E&P LLC110,0002007-07-17