COLEMAN RANCH

Oil · District 8A · Lease #65482

Operator: WALKER OPERATING

Cum Oil

20k BBL

Cum Gas

41 MCF

casinghead

Wells

16

Production

1993-01 — 2026-04

Peak Month

1996-09

Production History

Cum Oil: 20,228 BBL Cum Gas: 41 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

79 BBL/mo

Di (annual)

4.5%

b-factor

0.0

EUR

18,928 BBL

R-squared

0.674

type

exponential

Operator History (from monthly production reports)

2024-10 — 2026-07 IRA TESTERS, LLC 22 mo
2017-11 — 2024-09 WALKER OIL AND GAS LTD 83 mo
2013-02 — 2017-10 WALKER OPERATING 57 mo
2008-03 — 2013-01 CGW OPERATING OIL & GAS, L.L.C. 59 mo
2003-08 — 2008-02 CAIN OPERATING CORPORATION 55 mo
1996-09 — 2003-07 CHAMBERS OPERATING, INC. 83 mo
1996-08 — 1996-08 PATRIOT SERVICES, INC. 1 mo
1993-01 — 1996-07 COALINGA CORPORATION 43 mo

Wells (16)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
17IRA TESTERS, LLC12,0001986-10-20
5IRA TESTERS, LLC12,0001986-10-20
11IRA TESTERS, LLC12,0001986-08-06
12IRA TESTERS, LLC12,0001986-08-06
13IRA TESTERS, LLC12,0001986-08-06
16WSIRA TESTERS, LLC17001986-06-10
14IRA TESTERS, LLC12,0001986-05-28
15IRA TESTERS, LLC12,0001986-05-28
7IRA TESTERS, LLC12,0001986-05-27
10IRA TESTERS, LLC12,0001986-05-23
6IRA TESTERS, LLC12,0001986-04-25
9IRA TESTERS, LLC12,0001986-04-18
8IRA TESTERS, LLC12,0001986-04-16
4IRA TESTERS, LLC12,0001986-03-19
3IRA TESTERS, LLC11,8001985-11-27
2IRA TESTERS, LLC23,7001985-07-19