MORRISON -G-

Oil · District 08 · Lease #22658

Operator: ROVER PETROLEUM OPERATING, LLC

Fields: WESTBROOK

Cum Oil

107k BBL

Cum Gas

21 MCF

casinghead

Wells

12

Production

1993-01 — 2026-04

Peak Month

1998-08

Production History

Cum Oil: 107,240 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

818 BBL/mo

Di (annual)

22.6%

b-factor

0.8

EUR

95,312 BBL

R-squared

0.828

type

hyperbolic

Operator History (from monthly production reports)

2024-01 — 2026-07 GRAYROCK ENERGY II, LLC 31 mo
2017-06 — 2023-12 ROVER PETROLEUM OPERATING, LLC 79 mo
2009-10 — 2017-05 MERIT ENERGY COMPANY 92 mo
2006-05 — 2009-09 CIMAREX ENERGY CO. OF COLORADO 41 mo
1997-05 — 2006-04 GRUY PETROLEUM MANAGEMENT CO. 108 mo
1996-08 — 1997-04 BURLINGTON RESOURCES OIL&GAS CO. 9 mo
1993-01 — 1996-07 MERIDIAN OIL INC. 43 mo

Wells (12)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
21GRAYROCK ENERGY II, LLC13,5001997-11-25
22GRAYROCK ENERGY II, LLC13,5001997-11-25
23GRAYROCK ENERGY II, LLC13,5001997-11-25
28GRAYROCK ENERGY II, LLC13,5001997-11-25
29GRAYROCK ENERGY II, LLC13,5001997-11-25
30GRAYROCK ENERGY II, LLC13,5001997-11-25
19WGRAYROCK ENERGY II, LLC13,5001997-10-29
24WGRAYROCK ENERGY II, LLC13,5001997-10-29
26WGRAYROCK ENERGY II, LLC13,5001997-10-29
27WGRAYROCK ENERGY II, LLC13,5001997-10-29
1042-335-30214GRAYROCK ENERGY II, LLC------
942-335-30169GRAYROCK ENERGY II, LLC------