DUVAL RANCH -59-

Oil · District 04 · Lease #1138

Operator: KILLAM OIL COMPANY

Cum Oil

798k BBL

Cum Gas

21 MCF

casinghead

Wells

21

Production

1993-01 — 2026-04

Peak Month

1993-01

Production History

Cum Oil: 797,598 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

3,836 BBL/mo

Di (annual)

4.4%

b-factor

0.0

EUR

937,784 BBL

R-squared

0.759

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 (21)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
31KILLAM OIL CO., LTD.12,7002019-09-10
1WKILLAM OIL CO., LTD.49,0002018-06-15
26KILLAM OIL CO., LTD.23,0001985-07-09
29KILLAM OIL CO., LTD.12,3001981-10-29
28KILLAM OIL CO., LTD.12,3001980-03-18
4KILLAM OIL CO., LTD.12,3001980-03-18
14KILLAM OIL CO., LTD.12,2301979-10-26
25KILLAM OIL CO., LTD.12,6001979-03-22
10KILLAM OIL CO., LTD.11,9801979-03-15
1142-131-80588KILLAM OIL CO., LTD.------
1242-131-80589KILLAM OIL CO., LTD.------
1342-131-05853KILLAM OIL CO., LTD.------
1542-131-05855KILLAM OIL CO., LTD.------
2342-131-30435KILLAM OIL CO., LTD.------
2742-131-80591KILLAM OIL CO., LTD.------
2W42-131-80585KILLAM OIL CO., LTD.------
542-131-80587KILLAM OIL CO., LTD.------
642-131-05846KILLAM OIL CO., LTD.------
742-131-05847KILLAM OIL CO., LTD.------
842-131-05848KILLAM OIL CO., LTD.------
942-131-05849KILLAM OIL CO., LTD.------