< leases

EVANS "34"

Oil · District 08 · Lease #26348

Operator: WESTAR ENERGY, INC.

Fields: SPRABERRY (TREND AREA)

Cum Oil

99k BBL

Cum Gas

130k MCF

casinghead

Wells

2

Production

1993-01 — 2025-04

Peak Month

2011-05

Production History

Cum Oil: 98,992 BBL Cum Gas: 130,487 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,283 BBL/mo

Di (annual)

41.6%

b-factor

0.4

EUR

59,541 BBL

R-squared

0.678

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2018-09 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 76 mo
2017-12 — 2018-08 DE3 OPERATING LLC 9 mo
2014-09 — 2017-11 DIAMONDBACK E&P LLC 39 mo
2011-09 — 2014-08 BLUESTEM ENERGY HOLDINGS, LLC 36 mo
2009-03 — 2011-08 ADVENTURE EXPLORATION PTRS, LLC 30 mo
2006-01 — 2009-02 REX ENERGY OPERATING CORP. 38 mo
1993-01 — 2005-12 WESTAR ENERGY, INC. 156 mo

Wells (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
242-173-33817DIAMONDBACK E&P LLC210,4002010-11-18
142-173-31076DIAMONDBACK E&P LLC18,6001980-07-17