MCMASTER #2

Oil · District 7C · Lease #12164

Operator: UMC PETROLEUM CORPORATION

Cum Oil

30k BBL

Cum Gas

409k MCF

casinghead

Wells

1

Production

1993-01 — 2020-07

Peak Month

1993-04

Production History

Cum Oil: 29,507 BBL Cum Gas: 409,369 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

201 BBL/mo

Di (annual)

7.1%

b-factor

0.0

EUR

33,056 BBL

R-squared

0.935

type

exponential

Operator History (from monthly production reports)

1996-11 — 2026-07 CITATION OIL & GAS CORP. 357 mo
1993-01 — 1996-10 UMC PETROLEUM CORPORATION 46 mo

Wells (1)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2CITATION OIL & GAS CORP.18,5001985-11-18