CHALK ESTATE

Oil · District 08 · Lease #19030

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

153k BBL

Cum Gas

17k MCF

casinghead

Wells

9

Production

1993-01 — 2011-11

Peak Month

1994-07

Production History

Cum Oil: 152,838 BBL Cum Gas: 17,150 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,193 BBL/mo

Di (annual)

14.1%

b-factor

0.7

EUR

180,345 BBL

R-squared

0.742

type

hyperbolic

Operator History (from monthly production reports)

2003-01 — 2012-04 CONOCOPHILLIPS COMPANY 112 mo
1993-01 — 2002-12 CONOCO INC. 120 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
23CITATION OIL & GAS CORP.13,2001986-05-27
23WCITATION OIL & GAS CORP.13,2001986-05-27
24CITATION OIL & GAS CORP.13,2001986-05-27
20CONOCOPHILLIPS COMPANY13,4001985-11-19
21CITATION OIL & GAS CORP.13,4001985-10-28
19CITATION OIL & GAS CORP.13,1001983-05-12
142-227-02412CONOCOPHILLIPS COMPANY------
1442-227-30140CONOCOPHILLIPS COMPANY------
542-227-02408CITATION OIL & GAS CORP.------