ROCKER B -F-

Oil · District 7C · Lease #4577

Operator: JM COX RESOURCES, L.P.

Cum Oil

103k BBL

Cum Gas

885k MCF

casinghead

Wells

10

Production

1993-01 — 2018-10

Peak Month

2014-11

Production History

Cum Oil: 103,382 BBL Cum Gas: 884,858 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,530 BBL/mo

Di (annual)

77.7%

b-factor

0.4

EUR

38,807 BBL

R-squared

0.709

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 (10)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11DISCOVERY NATURAL RESOURCES LLC112,0002014-05-17
10DISCOVERY NATURAL RESOURCES LLC210,0002011-11-22
8DISCOVERY NATURAL RESOURCES LLC17,3001985-01-16
9DISCOVERY NATURAL RESOURCES LLC17,3001985-01-16
7DISCOVERY NATURAL RESOURCES LLC17,2001984-10-10
6 XDISCOVERY NATURAL RESOURCES LLC17,5001982-03-03
3 XDISCOVERY NATURAL RESOURCES LLC17,5001981-11-30
142-383-10089DISCOVERY NATURAL RESOURCES LLC------
242-383-10090DISCOVERY NATURAL RESOURCES LLC------
542-383-10092DISCOVERY NATURAL RESOURCES LLC------