ROCKER B--B-

Oil · District 7C · Lease #4449

Operator: JM COX RESOURCES, L.P.

Cum Oil

93k BBL

Cum Gas

1.5M MCF

casinghead

Wells

13

Production

1993-01 — 2018-08

Peak Month

1995-05

Production History

Cum Oil: 93,270 BBL Cum Gas: 1,468,409 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

895 BBL/mo

Di (annual)

20.0%

b-factor

0.6

EUR

97,583 BBL

R-squared

0.848

type

hyperbolic

Operator History (from monthly production reports)

2018-09 — 2026-07 DISCOVERY NATURAL RESOURCES LLC 95 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
13DISCOVERY NATURAL RESOURCES LLC17,3001991-08-22
12DISCOVERY NATURAL RESOURCES LLC17,4001985-01-28
10DISCOVERY NATURAL RESOURCES LLC17,4001984-10-18
11DISCOVERY NATURAL RESOURCES LLC17,4001984-10-18
9DISCOVERY NATURAL RESOURCES LLC17,3001984-05-07
8DISCOVERY NATURAL RESOURCES LLC17,5001983-05-11
7DISCOVERY NATURAL RESOURCES LLC17,5001983-03-21
1 XDISCOVERY NATURAL RESOURCES LLC17,0001981-06-30
242-383-10066DISCOVERY NATURAL RESOURCES LLC------
342-383-10067DISCOVERY NATURAL RESOURCES LLC------
442-383-10068DISCOVERY NATURAL RESOURCES LLC------
542-383-10069DISCOVERY NATURAL RESOURCES LLC------
642-383-10070DISCOVERY NATURAL RESOURCES LLC------