Reservoir
Characterization of Low-Permeability Turbidites to Improve Waterflooding in the
Jenkins, Creties D.1, Don
Michel2, David Simmons3, Nitin Srivastava3,
Shahin Al-Sharif4, Randy Harris5, John Weisgram6
(1) DeGolyer and MacNaughton, Dallas, TX (2) DeGolyer and MacNaughton, (3) OXY
Long Beach Inc, (4) Occidental Oil and Gas Corporation, (5) THUMS Long Beach
Company, (6) Bainbridge Petroleum Consulting,
The U-P Ford zone in the Long Beach Unit
of the East Wilmington Field consists of low-permeability (2-50 millidarcies)
turbidites that have been waterflooded since field start-up. Forty years of
successes and failures have provided valuable lessons about how to best produce
these sandstones given their thin-bedded nature, lateral and vertical changes
in reservoir quality, and formation damage susceptibility. This work has become
more challenging with time as thinner bedded, more heterogeneous sandstones
have been targeted for their remaining oil. In this talk, we discuss work
conducted over the past three years to more closely integrate the geology, 3-D
seismic, petrophysics, numerical simulation, and drilling/completion practices
to identify bypassed oil and effectively waterflood these sandstones.
AAPG Search and Discover Article #90063©2007 AAPG Annual Convention, Long Beach, California