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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Old Dogs, Old Tricks—New Successes: Successful
Re-development of the Lake Washington Field
By
Manager of Exploration
Swift Energy Company
Swift Energy Company (Swift) acquired the Lake Washington
field in March 2001. Lake Washington Field is located in
Plaquemines Parish, Louisiana about 60 miles due-south of New
Orleans. Swift Energy’s team of geoscientists working on exploration
and further development of Lake Washington Field has
employed only-tried-and-true
subsurface
geological methods to
increase production from nearly 700 BOEPD at the time of
acquisition to more than 11,000 BOEPD at year-end 2003.
Located along the Louisiana coast, Lake Washington Field was
originally discovered in the 1930s and is around a shallow
piercement salt feature. Since inception, the field has produced
approximately 350 MMBOE. Swift Energy operates approximately
15,500 gross acres (12,900 net acres) in the field. Since
acquisition, Swift’s geoscientists have employed old-fashioned
geological methods of multiple-level
subsurface
maps
at close
intervals, combined with numerous correlation sections, fault
plane
maps
and net sand
maps
which have enabled the company
to book reserves at a faster pace than originally anticipated.
Although several older generation 2-D seismic lines have been
acquired in the field they proved to be of little use in defining
the close-in-type prospects that have been exploited. Swift has
drilled a total of 90 wells since the acquisition of which 71 wells
have been completed. This is a success rate of almost 79 percent!
The wells drilled since 2001 have intersected 58 different
pay zones, with current completions targeting 25 different
sands. The average net pay per completion has been approximately
138 feet.
Swift’s current plans call for the drilling of an additional 25–30 wells in 2004. Approximately 85% of the drilling to date has targeted reserves above 6,000 feet. The upcoming year will have numerous wells set up for the 6,000 feet to 9,000 feet depth range as well.
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