< leases

LOCKHART "B"

Oil · District 10 · Lease #4892

Operator: UPLAND RESOURCES, INC.

Fields: FELDMAN (TONKAWA)

Cum Oil

68k BBL

Cum Gas

653k MCF

casinghead

Wells

3

Production

1993-01 — 2024-10

Peak Month

2012-05

Production History

Cum Oil: 67,594 BBL Cum Gas: 652,645 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

4,082 BBL/mo

Di (annual)

200.1%

b-factor

0.8

EUR

81,654 BBL

R-squared

0.809

type

hyperbolic

Operator History (from monthly production reports)

2019-07 — 2026-07 PRESIDIO PETROLEUM LLC 85 mo
2012-05 — 2019-06 APACHE CORPORATION 86 mo
2008-01 — 2012-04 GRANITE OPERATING COMPANY 52 mo
1995-03 — 2007-12 UPLAND RESOURCES, INC. 154 mo
1993-01 — 1995-02 CONTINENTAL TREND RESOURCES, INC 26 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
405HB42-211-34966PRESIDIO PETROLEUM LLC17,9002011-10-26
242-211-31434PRESIDIO PETROLEUM LLC18,0001981-12-10
142-211-31365PRESIDIO PETROLEUM LLC17,9001981-07-10