ROCKER B -E-

Oil · District 7C · Lease #4544

Operator: JM COX RESOURCES, L.P.

Cum Oil

67k BBL

Cum Gas

710k MCF

casinghead

Wells

9

Production

1993-01 — 2018-08

Peak Month

1993-12

Production History

Cum Oil: 66,806 BBL Cum Gas: 709,640 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

443 BBL/mo

Di (annual)

7.2%

b-factor

0.0

EUR

72,027 BBL

R-squared

0.657

type

exponential

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 (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11DISCOVERY NATURAL RESOURCES LLC17,3001984-04-30
10DISCOVERY NATURAL RESOURCES LLC17,4001983-12-08
9DISCOVERY NATURAL RESOURCES LLC17,4001983-08-09
1 XDISCOVERY NATURAL RESOURCES LLC17,4001982-04-01
8 XDISCOVERY NATURAL RESOURCES LLC17,4001982-04-01
5 XDISCOVERY NATURAL RESOURCES LLC17,5001981-11-30
1D42-383-10100DISCOVERY NATURAL RESOURCES LLC------
342-383-10083DISCOVERY NATURAL RESOURCES LLC------
7 X42-383-30603DISCOVERY NATURAL RESOURCES LLC------