KEY (SPRABERRY) UNIT

Oil · District 8A · Lease #66772

Operator: GREAT WESTERN DRILLING COMPANY

Cum Oil

51k BBL

Cum Gas

133 MCF

casinghead

Wells

9

Production

1993-01 — 2012-04

Peak Month

1994-06

Production History

Cum Oil: 50,524 BBL Cum Gas: 133 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

1,099 BBL/mo

Di (annual)

81.3%

b-factor

0.5

EUR

30,943 BBL

R-squared

0.816

type

hyperbolic

Operator History (from monthly production reports)

1993-01 — 2015-08 GREAT WESTERN DRILLING COMPANY 272 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1GREAT WESTERN DRILLING COMPANY11,2001992-06-24
102GREAT WESTERN DRILLING COMPANY17,2501991-08-19
202GREAT WESTERN DRILLING COMPANY17,1001991-08-19
402GREAT WESTERN DRILLING COMPANY17,1001991-08-19
502GREAT WESTERN DRILLING COMPANY27,0371991-08-19
201GREAT WESTERN DRILLING COMPANY28,8001988-08-18
10142-115-10214GREAT WESTERN DRILLING COMPANY------
30142-115-00946GREAT WESTERN DRILLING COMPANY------
40142-115-10258GREAT WESTERN DRILLING COMPANY------