CHALK -B- DUNCAN

Oil · District 08 · Lease #41227

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

25k BBL

Cum Gas

3k MCF

casinghead

Wells

6

Production

2011-12 — 2014-12

Peak Month

2012-05

Production History

Cum Oil: 25,311 BBL Cum Gas: 2,996 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,533 BBL/mo

Di (annual)

218.1%

b-factor

1.1

EUR

46,129 BBL

R-squared

0.785

type

hyperbolic

Operator History (from monthly production reports)

2011-12 — 2017-02 CONOCOPHILLIPS COMPANY 63 mo

Wells (6)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
5WCITATION OIL & GAS CORP.13,3501988-05-20
7CITATION OIL & GAS CORP.13,2001988-05-18
8CITATION OIL & GAS CORP.13,2001988-05-18
1W42-227-00987CITATION OIL & GAS CORP.------
2W42-227-00989CITATION OIL & GAS CORP.------
342-227-10123CONOCOPHILLIPS COMPANY------