ROCKER B -K-

Oil · District 7C · Lease #4686

Operator: JM COX RESOURCES, L.P.

Cum Oil

167k BBL

Cum Gas

1.4M MCF

casinghead

Wells

13

Production

1993-01 — 2018-10

Peak Month

1995-05

Production History

Cum Oil: 167,463 BBL Cum Gas: 1,411,891 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,012 BBL/mo

Di (annual)

11.8%

b-factor

1.2

EUR

214,254 BBL

R-squared

0.567

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 (13)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
14DISCOVERY NATURAL RESOURCES LLC17,2001985-08-08
13DISCOVERY NATURAL RESOURCES LLC17,4001985-04-22
11DISCOVERY NATURAL RESOURCES LLC17,2001984-05-31
12DISCOVERY NATURAL RESOURCES LLC17,2001984-05-31
10DISCOVERY NATURAL RESOURCES LLC17,4001984-03-26
9DISCOVERY NATURAL RESOURCES LLC17,4001984-01-30
6 XDISCOVERY NATURAL RESOURCES LLC17,5001982-04-19
5 XDISCOVERY NATURAL RESOURCES LLC17,3001981-09-25
142-383-10302DISCOVERY NATURAL RESOURCES LLC------
342-383-10546DISCOVERY NATURAL RESOURCES LLC------
442-383-10573DISCOVERY NATURAL RESOURCES LLC------
742-383-10547DISCOVERY NATURAL RESOURCES LLC------
842-383-10504DISCOVERY NATURAL RESOURCES LLC------