< leases

HALFF "47"

Oil · District 7C · Lease #10523

Operator: UMC PETROLEUM CORPORATION

Fields: SPRABERRY (TREND AREA CL. FK.)

Cum Oil

138k BBL

Cum Gas

252k MCF

casinghead

Wells

6

Production

1993-01 — 2026-03

Peak Month

1993-03

Production History

Cum Oil: 138,291 BBL Cum Gas: 252,374 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,174 BBL/mo

Di (annual)

84.4%

b-factor

0.0

EUR

16,681 BBL

R-squared

0.525

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 (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
742-461-41719ATLAS OPERATING LLC18,9902021-03-02
442-461-31695ATLAS OPERATING LLC29,0001984-12-17
142-461-31692ATLAS OPERATING LLC29,0001984-07-02
642-461-31839ATLAS OPERATING LLC29,0001984-07-02
342-461-31694ATLAS OPERATING LLC29,0001983-12-19
542-461-31838ATLAS OPERATING LLC29,0001983-12-19