KEY (SPRABERRY) UNIT

Oil // district 11 // lease#66772

op: GREAT WESTERN DRILLING COMPANY

cum_oil

51k BBL

cum_gas

0 MCF

wells

9

production

1993-01 — 2015-08

peak_month

1994-06

-- production_history

cum_oil: 50,524 BBL cum_gas: 0 MCF

-- 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

-- wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1GREAT WESTERN DRLG. CO.11,2001992-06-24
102GREAT WESTERN DRLG. CO.17,2501991-08-19
202GREAT WESTERN DRLG. CO.17,1001991-08-19
402GREAT WESTERN DRLG. CO.17,1001991-08-19
502GREAT WESTERN DRLG. CO.27,0371991-08-19
201PENWELL ENERGY, INC.28,8001988-08-18
10142-115-10214--------
30142-115-00946--------
40142-115-10258--------
EOF // multi-state drilling data platform // 2026