DUVAL RANCH -59-

Oil · District 4 · Lease #1138

Operator: KILLAM OIL COMPANY

Cum Oil

796k BBL

Cum Gas

0 MCF

Wells

21

Production

1993-01 — 2026-03

Peak Month

1993-01

Production History

Cum Oil: 796,251 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

3,756 BBL/mo

Di (annual)

4.2%

b-factor

0.0

EUR

947,511 BBL

R-squared

0.762

type

exponential

Wells (21)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
31KILLAM OIL CO., LTD.12,7002019-09-10
1WKILLAM OIL CO., LTD.49,0002018-06-15
26MOBIL OIL CORPORATION23,0001985-07-09
29MOBIL PRODUCING TX. & N.M. INC.12,3001981-10-29
28MOBIL PRODUCING TX. & N.M. INC.12,3001980-03-18
4MOBIL PRODUCING TX. & N.M. INC.12,3001980-03-18
14MOBIL OIL CORPORATION12,2301979-10-26
25MOBIL OIL CORPORATION12,6001979-03-22
10MOBIL OIL CORPORATION11,9801979-03-15
1142-131-80588--------
1242-131-80589--------
1342-131-05853--------
1542-131-05855--------
2342-131-30435--------
2742-131-80591--------
2W42-131-80585--------
542-131-80587--------
642-131-05846--------
742-131-05847--------
842-131-05848--------
942-131-05849--------
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