With the discovory of a hundred million tons’heavey oil
reservor in Wangzhuan area of north steep slope in Dongying
depression ,gritstone fan subtle heavey-oil reservoir has become
one of the key aim and reserves mounting . In this article :
taking the methods of sediment and log and seism , through the
researching on the charateristics of gritstone fan body in
Wangzhuan area , The conclusion is : Wangzhuan area came
mainly into being upper kinetic energy 3rd and 4rd member of the
Shahejie formation gritstone fan sediment body (alluvial fan , fan
delta , nearshore subaqueous fan ) during early-tertiary ; And
the fan delta gritstone body is the main types of gritstone body in
Wangzhuan area ; and it has the preferable reservor capability
and is the dominating reservoir in Wangzhuan area . The
gritstone fan sediment was mightily controlled by the boundary
structure condition in Wangzhuan area . Both the gritstone fan
sediment and it’s configuration were controlled by deposit facies
; and it has the changeful character and is the straightforward
cause of forming the changeful of mass and distribution of
reservoir character in Wangzhuan area .
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