CHALK, G. O. "A"

Oil · District 08 · Lease #18987

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

76k BBL

Cum Gas

33k MCF

casinghead

Wells

2

Production

1993-01 — 2011-11

Peak Month

1995-10

Production History

Cum Oil: 76,248 BBL Cum Gas: 32,502 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

616 BBL/mo

Di (annual)

22.9%

b-factor

1.7

EUR

113,778 BBL

R-squared

0.634

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 (2)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
11CITATION OIL & GAS CORP.13,1501977-09-06
1042-227-31070CITATION OIL & GAS CORP.------