CHALK, OTIS

Oil · District 08 · Lease #18996

Operator: WESTPORT OIL AND GAS COMPANY, LP

Cum Oil

798k BBL

Cum Gas

261k MCF

casinghead

Wells

20

Production

1993-01 — 2011-11

Peak Month

2002-07

Production History

Cum Oil: 797,759 BBL Cum Gas: 260,963 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

7,335 BBL/mo

Di (annual)

37.8%

b-factor

2.0

EUR

1,216,960 BBL

R-squared

0.875

type

hyperbolic

Operator History (from monthly production reports)

2007-04 — 2015-10 APACHE CORPORATION 103 mo
2006-03 — 2007-03 KERR-MCGEE OIL & GAS ONSHORE LP 13 mo
2002-03 — 2006-02 WESTPORT OIL AND GAS COMPANY, LP 48 mo
1995-07 — 2002-02 WESTPORT OIL AND GAS COMPANY INC 80 mo
1993-01 — 1995-06 CHEVRON U. S. A. INC. 30 mo

Wells (20)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1419APACHE CORPORATION23,4002009-09-23
1418APACHE CORPORATION23,4002008-11-18
1416APACHE CORPORATION33,8002001-07-03
25WAPACHE CORPORATION13,4002001-06-08
20WAPACHE CORPORATION13,4002001-06-07
21WAPACHE CORPORATION13,4002001-06-07
21WUAPACHE CORPORATION13,4002001-06-07
22WAPACHE CORPORATION13,4002001-06-07
23WAPACHE CORPORATION13,4002001-06-07
24WAPACHE CORPORATION13,4002001-06-07
12APACHE CORPORATION13,2952001-06-06
13APACHE CORPORATION43,8002001-05-22
1315APACHE CORPORATION43,8002001-05-22
3APACHE CORPORATION13,9001999-09-22
5WAPACHE CORPORATION13,3001998-11-16
1317APACHE CORPORATION23,2001996-10-22
642-227-04103APACHE CORPORATION------
742-227-04102APACHE CORPORATION------
842-227-04391APACHE CORPORATION------
942-227-04104APACHE CORPORATION------