COOK, W. I. ESTATES SEC. /139A/

Oil · District 7B · Lease #3573

Operator: YOUNG, MARSHALL R., OIL CO.

Fields: COOK RANCH

Cum Oil

31k BBL

Cum Gas

21 MCF

casinghead

Wells

24

Production

1993-01 — 2002-07

Peak Month

1994-06

Production History

Cum Oil: 31,479 BBL Cum Gas: 21 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

804 BBL/mo

Di (annual)

52.3%

b-factor

0.2

EUR

22,969 BBL

R-squared

0.950

type

hyperbolic

Operator History (from monthly production reports)

2010-04 — 2026-07 STASNEY WELL SERVICE, LLC 196 mo
1998-11 — 2010-03 STASNEY, H. R. & SONS, LTD. 137 mo
1993-01 — 1998-10 YOUNG, MARSHALL R., OIL CO. 70 mo

Wells (24)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
7ASTASNEY WELL SERVICE LLC12,0002017-02-10
34STASNEY H. R. & SONS LTD.22,0001995-09-22
33STASNEY WELL SERVICE LLC12,0001989-10-23
30STASNEY WELL SERVICE LLC12,0001988-06-10
31STASNEY WELL SERVICE LLC12,0001988-06-10
28STASNEY WELL SERVICE LLC12,0001988-04-08
9STASNEY WELL SERVICE LLC11,4501988-02-04
27STASNEY WELL SERVICE LLC12,0001988-02-03
26STASNEY WELL SERVICE LLC12,0001987-10-29
25STASNEY WELL SERVICE LLC12,0001987-09-03
24STASNEY WELL SERVICE LLC12,0001987-06-24
22STASNEY WELL SERVICE LLC11,8001987-05-19
21STASNEY WELL SERVICE LLC11,8001987-05-18
14STASNEY WELL SERVICE LLC11,4681987-05-11
20STASNEY WELL SERVICE LLC11,4781987-04-13
142-417-08683STASNEY WELL SERVICE LLC------
1042-417-01621STASNEY WELL SERVICE LLC------
1142-417-08680STASNEY WELL SERVICE LLC------
1342-417-31488STASNEY WELL SERVICE LLC------
1542-417-31544STASNEY WELL SERVICE LLC------
1642-417-31568STASNEY WELL SERVICE LLC------
1742-417-31581STASNEY WELL SERVICE LLC------
1842-417-31602STASNEY WELL SERVICE LLC------
842-417-08681STASNEY WELL SERVICE LLC------