O'BRIEN, G. W. ETAL

Oil · District 08 · Lease #26670

Operator: WHITING OIL AND GAS CORPORATION

Cum Oil

3.0M BBL

Cum Gas

7.2M MCF

casinghead

Wells

40

Production

1993-01 — 2026-03

Peak Month

2019-10

Production History

Cum Oil: 3,030,980 BBL Cum Gas: 7,167,534 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

60,940 BBL/mo

Di (annual)

88.5%

b-factor

2.0

EUR

6,991,690 BBL

R-squared

0.853

type

hyperbolic

Operator History (from monthly production reports)

2021-05 — 2026-07 SUNDOWN ENERGY LP 63 mo
2016-11 — 2021-04 FOUR CORNERS PETROLEUM II, LLC 54 mo
2005-10 — 2016-10 WHITING OIL AND GAS CORPORATION 133 mo
2004-11 — 2005-09 CELERO ENERGY, L.P. 11 mo
2003-09 — 2004-10 BC OPERATING, INC. 14 mo
1993-01 — 2003-08 CHEVRON U. S. A. INC. 128 mo

Wells (40)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
2010SUNDOWN ENERGY LP112,0002019-03-01
2011SUNDOWN ENERGY LP112,0002019-03-01
2054SUNDOWN ENERGY LP212,0002019-03-01
2008SUNDOWN ENERGY LP312,0002018-12-07
2009SUNDOWN ENERGY LP112,0002018-12-07
2048SUNDOWN ENERGY LP112,0002018-12-07
2037SUNDOWN ENERGY LP112,0002018-11-09
2044SUNDOWN ENERGY LP112,0002018-11-09
2019SUNDOWN ENERGY LP111,5002018-08-30
2036SUNDOWN ENERGY LP111,5002018-08-30
2034SUNDOWN ENERGY LP111,5002018-08-13
2035SUNDOWN ENERGY LP111,5002018-08-13
2039SUNDOWN ENERGY LP111,5002018-08-13
2043SUNDOWN ENERGY LP111,5002018-07-26
2038SUNDOWN ENERGY LP111,5002018-06-29
2013SUNDOWN ENERGY LP111,5002018-06-28
2014SUNDOWN ENERGY LP111,0002018-06-14
2017TWO P PARTNERS, LLC212,0002018-03-28
2021RSUNDOWN ENERGY LP112,0002018-03-27
2020SUNDOWN ENERGY LP112,0002018-03-15
2029SUNDOWN ENERGY LP112,0002018-02-28
2025SUNDOWN ENERGY LP112,0002018-02-22
2023SUNDOWN ENERGY LP212,0002018-02-21
2024SUNDOWN ENERGY LP112,0002018-02-12
2026SUNDOWN ENERGY LP212,0002018-01-30
2027SUNDOWN ENERGY LP212,0002018-01-30
2018SUNDOWN ENERGY LP112,0002017-12-01
2021TWO P PARTNERS, LLC112,0002017-12-01
2022TWO P PARTNERS, LLC112,0002017-11-15
2002TWO P PARTNERS, LLC111,1502017-03-31
2007SUNDOWN ENERGY LP211,5002017-03-31
2000TWO P PARTNERS, LLC111,1502017-03-28
2001TWO P PARTNERS, LLC211,1502017-03-28
1218SUNDOWN ENERGY LP515,8502013-06-14
1519SUNDOWN ENERGY LP29,7002012-05-01
1226SUNDOWN ENERGY LP412,5762011-06-30
1600TWO P PARTNERS, LLC212,0002005-03-02
1227TWO P PARTNERS, LLC29,3001999-04-08
1223TWO P PARTNERS, LLC19,3001981-07-09
1220TWO P PARTNERS, LLC19,6001981-06-09