CHALK,MARY

Oil · District 08 · Lease #41221

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

366k BBL

Cum Gas

130k MCF

casinghead

Wells

37

Production

2011-12 — 2026-04

Peak Month

2015-03

Production History

Cum Oil: 366,197 BBL Cum Gas: 130,145 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

2,545 BBL/mo

Di (annual)

4.8%

b-factor

0.2

EUR

631,276 BBL

R-squared

0.360

type

hyperbolic

Operator History (from monthly production reports)

2018-02 — 2026-07 CITATION OIL & GAS CORP. 102 mo
2011-12 — 2018-01 CONOCOPHILLIPS COMPANY 74 mo

Wells (37)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
89CITATION OIL & GAS CORP.14,5002015-05-27
84CITATION OIL & GAS CORP.14,2502013-11-19
83CITATION OIL & GAS CORP.24,4002010-09-16
47CITATION OIL & GAS CORP.13,2002009-06-26
79CITATION OIL & GAS CORP.23,5002008-08-05
69CITATION OIL & GAS CORP.33,4001994-04-01
76WCITATION OIL & GAS CORP.23,3001993-07-02
80CITATION OIL & GAS CORP.13,3001993-06-11
77CITATION OIL & GAS CORP.12,5001988-02-05
72CITATION OIL & GAS CORP.12,5001987-01-22
71CITATION OIL & GAS CORP.12,6001986-11-26
70CITATION OIL & GAS CORP.13,2001986-04-29
67WCITATION OIL & GAS CORP.13,4001985-10-17
63CITATION OIL & GAS CORP.13,1001983-07-28
64CITATION OIL & GAS CORP.13,1001983-07-28
65CITATION OIL & GAS CORP.13,1001983-07-28
60CITATION OIL & GAS CORP.13,1001983-02-15
61CITATION OIL & GAS CORP.13,1001983-02-15
1142-227-02150CITATION OIL & GAS CORP.------
1242-227-02003CITATION OIL & GAS CORP.------
1342-227-02151CITATION OIL & GAS CORP.------
1442-227-02002CITATION OIL & GAS CORP.------
1642-227-03454CITATION OIL & GAS CORP.------
1742-227-02153CITATION OIL & GAS CORP.------
1942-227-02009CITATION OIL & GAS CORP.------
2642-227-02013CITATION OIL & GAS CORP.------
2942-227-04392CITATION OIL & GAS CORP.------
3442-227-10366CITATION OIL & GAS CORP.------
3742-227-10671CITATION OIL & GAS CORP.------
41W42-227-30345CITATION OIL & GAS CORP.------
4242-227-30265CITATION OIL & GAS CORP.------
4342-227-30329CITATION OIL & GAS CORP.------
4442-227-30330CITATION OIL & GAS CORP.------
5442-227-30832CITATION OIL & GAS CORP.------
5542-227-30726CITATION OIL & GAS CORP.------
5742-227-30724CITATION OIL & GAS CORP.------
5942-227-31082CITATION OIL & GAS CORP.------