ROCKER B -D-

Oil · District 7C · Lease #4537

Operator: JM COX RESOURCES, L.P.

Cum Oil

73k BBL

Cum Gas

838k MCF

casinghead

Wells

7

Production

1993-01 — 2018-08

Peak Month

2000-05

Production History

Cum Oil: 72,540 BBL Cum Gas: 838,202 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

610 BBL/mo

Di (annual)

19.2%

b-factor

0.3

EUR

52,296 BBL

R-squared

0.774

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 (7)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
8DISCOVERY NATURAL RESOURCES LLC17,2001997-05-22
7DISCOVERY NATURAL RESOURCES LLC17,4001983-08-09
6DISCOVERY NATURAL RESOURCES LLC17,5001983-05-19
5DISCOVERY NATURAL RESOURCES LLC17,5001983-03-31
3 XDISCOVERY NATURAL RESOURCES LLC17,0001981-06-30
242-383-10081DISCOVERY NATURAL RESOURCES LLC------
442-383-10079DISCOVERY NATURAL RESOURCES LLC------