COCHRAN, J. H. "A"

Oil · District 7B · Lease #28105

Operator: ROBERTSON RESOURCES, INC.

Cum Oil

844 BBL

Cum Gas

930 MCF

casinghead

Wells

1

Production

1997-02 — 1998-01

Peak Month

1997-02

Production History

Cum Oil: 844 BBL Cum Gas: 930 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

186 BBL/mo

Di (annual)

570.6%

b-factor

0.1

EUR

439 BBL

R-squared

0.906

type

hyperbolic

Operator History (from monthly production reports)

2015-10 — 2026-07 BUSTAMANTE OIL COMPANY 130 mo
1997-02 — 2015-09 ROBERTSON RESOURCES, INC. 224 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11BUSTAMANTE OIL COMPANY16,8001996-12-04