CHALK, G. O. -D-

Oil · District 08 · Lease #41216

Operator: CONOCOPHILLIPS COMPANY

Cum Oil

1.1M BBL

Cum Gas

252k MCF

casinghead

Wells

32

Production

2011-12 — 2026-04

Peak Month

2015-03

Production History

Cum Oil: 1,116,341 BBL Cum Gas: 252,027 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

13,370 BBL/mo

Di (annual)

19.8%

b-factor

0.7

EUR

1,586,201 BBL

R-squared

0.943

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 (32)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
37CITATION OIL & GAS CORP.14,6002015-05-21
29CITATION OIL & GAS CORP.14,6002014-12-11
35CITATION OIL & GAS CORP.14,6002014-08-16
33CITATION OIL & GAS CORP.14,3002014-07-24
36CITATION OIL & GAS CORP.15,0002014-07-24
34CITATION OIL & GAS CORP.15,0002013-01-03
31CITATION OIL & GAS CORP.15,0002012-07-06
28CITATION OIL & GAS CORP.24,6002011-10-25
27CITATION OIL & GAS CORP.24,6002011-03-04
26 WCITATION OIL & GAS CORP.13,3001989-05-03
15ACITATION OIL & GAS CORP.13,3001989-05-02
12ACITATION OIL & GAS CORP.13,3001988-05-06
10ACITATION OIL & GAS CORP.13,3001988-05-02
11ACITATION OIL & GAS CORP.13,3001988-05-02
13ACITATION OIL & GAS CORP.13,3001988-05-02
14ACITATION OIL & GAS CORP.13,3001988-05-02
22CITATION OIL & GAS CORP.23,2501988-04-26
22WCITATION OIL & GAS CORP.23,2501988-04-26
24CITATION OIL & GAS CORP.26,5001987-09-16
17CITATION OIL & GAS CORP.13,9001983-05-04
17 WCITATION OIL & GAS CORP.13,9001983-05-04
19CITATION OIL & GAS CORP.13,9001983-05-04
21CITATION OIL & GAS CORP.13,2501980-06-05
1A42-227-00985CITATION OIL & GAS CORP.------
442-227-00379CITATION OIL & GAS CORP.------
4A42-227-00990CITATION OIL & GAS CORP.------
542-227-00512CITATION OIL & GAS CORP.------
5A42-227-00991CITATION OIL & GAS CORP.------
642-227-00510CITATION OIL & GAS CORP.------
6A42-227-10551CITATION OIL & GAS CORP.------
7A42-227-10552CITATION OIL & GAS CORP.------
8A42-227-10553CITATION OIL & GAS CORP.------