< leases

OBRIEN, G. W., ETAL

Oil · District 10 · Lease #20910

Operator: WHITING OIL AND GAS CORPORATION

Fields: WARD-ESTES, NORTH (HOLT)

Cum Oil

19k BBL

Cum Gas

0 MCF

Wells

24

Production

1993-01 — 2026-03

Peak Month

2013-05

Production History

Cum Oil: 18,874 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

500 BBL/mo

Di (annual)

187.4%

b-factor

0.8

EUR

10,590 BBL

R-squared

0.648

type

hyperbolic

Wells (24)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
584W42-495-01550WHITING OIL AND GAS CORPORATION44,8002021-06-23
1218D42-475-32214WHITING OIL AND GAS CORPORATION515,8502013-06-14
195642-495-33459WHITING OIL AND GAS CORPORATION18,8002012-09-25
191942-495-33446WHITING OIL AND GAS CORPORATION18,8002012-07-10
191442-495-33426WHITING OIL AND GAS CORPORATION18,8002012-05-08
114242-475-30489WHITING OIL AND GAS CORPORATION38,8002012-05-01
151942-475-33683WHITING OIL AND GAS CORPORATION29,7002012-05-01
191542-495-33427WHITING OIL AND GAS CORPORATION18,8002012-04-28
191642-495-33428WHITING OIL AND GAS CORPORATION18,8002012-04-28
191742-475-36093WHITING OIL AND GAS CORPORATION18,8002012-04-28
191842-495-33429WHITING OIL AND GAS CORPORATION18,8002012-04-28
122642-475-32396WHITING OIL AND GAS CORPORATION412,5762011-06-30
1226W42-475-32396WHITING OIL AND GAS CORPORATION412,5762011-06-30
188442-475-35838WHITING OIL AND GAS CORPORATION18,5002011-06-29
188542-475-35839WHITING OIL AND GAS CORPORATION18,5002011-06-29
188642-475-35840WHITING OIL AND GAS CORPORATION18,0002011-06-29
188742-475-35841WHITING OIL AND GAS CORPORATION18,5002011-06-29
188842-475-35842WHITING OIL AND GAS CORPORATION18,5002011-06-29
188942-475-35843WHITING OIL AND GAS CORPORATION18,5002011-06-29
189042-475-35844WHITING OIL AND GAS CORPORATION18,5002011-06-29
110542-475-30076WHITING OIL AND GAS CORPORATION25,0002007-08-17
31942-475-01464CHEVRON U. S. A. INC.28,0002001-02-26
319D42-475-01464CHEVRON U. S. A. INC.28,0002001-02-26
158142-475-34272CHEVRON U. S. A. INC.66,0001999-05-07
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