DUVAL RANCH, SEC. # 257 A/C 1

Oil · District 04 · Lease #1702

Operator: KILLAM OIL COMPANY

Cum Oil

477k BBL

Cum Gas

19k MCF

casinghead

Wells

6

Production

1993-01 — 2026-01

Peak Month

2007-10

Production History

Cum Oil: 476,620 BBL Cum Gas: 19,107 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,979 BBL/mo

Di (annual)

6.9%

b-factor

0.0

EUR

498,500 BBL

R-squared

0.600

type

exponential

Operator History (from monthly production reports)

1994-04 — 2026-07 KILLAM OIL CO., LTD. 388 mo
1994-01 — 1994-03 KILLAM OIL COMPANY 3 mo
1993-01 — 1993-12 DUNIGAN PETROLEUM, INC. 12 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11KILLAM OIL CO., LTD.38,2721983-08-19
142-131-05991KILLAM OIL CO., LTD.------
10 L42-131-05992KILLAM OIL CO., LTD.------
242-131-05993KILLAM OIL CO., LTD.------
342-131-05994KILLAM OIL CO., LTD.------
6 L42-131-05997KILLAM OIL CO., LTD.------