< leases

AMACKER "15"

Oil · District 7C · Lease #11216

Operator: UMC PETROLEUM CORPORATION

Fields: SPRABERRY (TREND AREA CL. FK.)

Cum Oil

65k BBL

Cum Gas

26k MCF

casinghead

Wells

3

Production

1993-01 — 2026-03

Peak Month

2023-06

Production History

Cum Oil: 64,581 BBL Cum Gas: 26,141 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,203 BBL/mo

Di (annual)

197.3%

b-factor

0.0

EUR

7,331 BBL

R-squared

0.737

type

exponential

Operator History (from monthly production reports)

2010-04 — 2026-07 ATLAS OPERATING LLC 196 mo
2008-02 — 2010-03 PIONEER EXPLORATION, LLC 26 mo
2001-07 — 2008-01 PIONEER EXPLORATION, LTD. 79 mo
1997-04 — 2001-06 PIONEER EXPLORATION COMPANY 51 mo
1993-01 — 1997-03 UMC PETROLEUM CORPORATION 51 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
342-461-42177ATLAS OPERATING LLC18,9992022-06-21
142-461-31689ATLAS OPERATING LLC29,0001985-08-22
242-461-31869ATLAS OPERATING LLC29,0001984-12-10