COOK RANCH 85

Oil · District 7B · Lease #30240

Operator: STASNEY WELL SERVICE, LLC

Fields: COOK RANCH

Cum Oil

6k BBL

Cum Gas

12k MCF

casinghead

Wells

3

Production

2008-11 — 2026-04

Peak Month

2010-05

Production History

Cum Oil: 6,286 BBL Cum Gas: 11,962 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

62 BBL/mo

Di (annual)

21.1%

b-factor

0.2

EUR

4,259 BBL

R-squared

0.593

type

hyperbolic

Operator History (from monthly production reports)

2011-06 — 2026-07 STASNEY WELL SERVICE, LLC 182 mo
2008-11 — 2011-05 STASNEY, H. R. & SONS, LTD. 31 mo

Wells (3)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
71STASNEY WELL SERVICE, LLC12,0002011-03-21
70STASNEY WELL SERVICE, LLC12,0002010-02-22
63STASNEY WELL SERVICE, LLC12,0002008-05-09