< leases

SCHUELKE "28"

Oil · District 08 · Lease #34037

Operator: THREE SPAN OIL & GAS, INC.

Fields: PATIENCE (PENN-REEF)

Cum Oil

89k BBL

Cum Gas

587k MCF

casinghead

Wells

1

Production

1993-12 — 2012-12

Peak Month

1994-05

Production History

Cum Oil: 88,640 BBL Cum Gas: 586,784 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,878 BBL/mo

Di (annual)

54.6%

b-factor

0.4

EUR

67,173 BBL

R-squared

0.729

type

hyperbolic

Operator History (from monthly production reports)

2019-02 — 2026-07 DIAMONDBACK E&P LLC 90 mo
2012-05 — 2019-01 ENERGEN RESOURCES CORPORATION 81 mo
2007-11 — 2012-04 THREE SPAN OIL & GAS, INC. 54 mo
2004-12 — 2007-10 MARINER ENERGY, INC. 35 mo
1993-12 — 2004-11 PARALLEL PETROLEUM CORPORATION 132 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
142-227-34802DIAMONDBACK E&P LLC29,6002001-06-04