ROCKER B -L-

Oil · District 7C · Lease #4861

Operator: JM COX RESOURCES, L.P.

Cum Oil

68k BBL

Cum Gas

1.2M MCF

casinghead

Wells

7

Production

1993-01 — 2018-08

Peak Month

1996-10

Production History

Cum Oil: 67,834 BBL Cum Gas: 1,188,136 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

586 BBL/mo

Di (annual)

65.1%

b-factor

0.1

EUR

11,957 BBL

R-squared

0.598

type

hyperbolic

Operator History (from monthly production reports)

2018-09 — 2019-01 DISCOVERY NATURAL RESOURCES LLC 5 mo
2003-10 — 2018-08 JM COX RESOURCES, L.P. 179 mo
1993-11 — 2003-09 COX, JOHN L. 119 mo
1993-01 — 1993-10 GRAHAM ROYALTY, LTD. 10 mo

Wells (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7DISCOVERY NATURAL RESOURCES LLC110,0002013-05-07
6DISCOVERY NATURAL RESOURCES LLC17,3001985-11-19
5DISCOVERY NATURAL RESOURCES LLC17,5001985-03-04
4DISCOVERY NATURAL RESOURCES LLC17,3001983-09-15
142-383-10761DISCOVERY NATURAL RESOURCES LLC------
242-383-10770DISCOVERY NATURAL RESOURCES LLC------
342-383-10785DISCOVERY NATURAL RESOURCES LLC------