OLDHAM

Oil · District 09 · Lease #25642

Operator: CHEK OIL CO., LLC

Cum Oil

74k BBL

Cum Gas

46 MCF

casinghead

Wells

5

Production

1993-01 — 2026-04

Peak Month

1995-05

Production History

Cum Oil: 74,234 BBL Cum Gas: 46 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

399 BBL/mo

Di (annual)

6.8%

b-factor

0.3

EUR

80,969 BBL

R-squared

0.838

type

hyperbolic

Operator History (from monthly production reports)

2019-06 — 2026-07 CHEK OIL CO., LLC 86 mo
2019-02 — 2019-05 CHEK OIL CO. 4 mo
1993-01 — 2019-01 BYTEX OIL COMPANY 313 mo

Wells (5)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5BCHEK OIL CO., LLC11,5002005-11-22
B 4CHEK OIL CO., LLC11,5001999-09-30
B 3CHEK OIL CO., LLC11,4001995-02-08
B 2CHEK OIL CO., LLC11,4001985-10-28
100CHEK OIL CO., LLC11,4001983-07-05