OLDHAM

Oil · District 13 · Lease #186

Operator: CHEK OIL CO., LLC

Cum Oil

77k BBL

Cum Gas

0 MCF

Wells

15

Production

1993-01 — 2026-03

Peak Month

2006-10

Production History

Cum Oil: 77,386 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

325 BBL/mo

Di (annual)

16.5%

b-factor

0.6

EUR

41,001 BBL

R-squared

0.629

type

hyperbolic

Wells (15)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11CHEK OIL CO.11,4002003-09-25
10CHEK OIL CO.11,5002001-08-07
6CHEK OIL CO.11,5001997-03-14
8 ACHEK OIL CO.11,5001996-09-18
7 ACHEK OIL CO.11,4501993-03-24
2CHEK OIL CO.11,6001990-11-30
3 ACHEK OIL CO.11,6001990-11-03
3-ACHEK OIL CO.11,6001990-11-03
1CHEK OIL CO.11,6001990-01-04
6 ACHEK OIL CO.11,6001989-02-14
5CHEK OIL CO.11,6001988-01-18
442-009-80725--------
742-009-80728--------
842-009-80729--------
942-009-80730--------
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