The sandstones of reservoir were mainly middle to coarse grain feldspar detritus sandstone, detritus feldsparsandstone and detritus sandstone.
储层岩石类型主要为粗岩屑砂岩、中粒岩屑石英砂岩、细粒岩屑砂岩。
2
Pores are closely correlated with sandstone fabric, and are more easily generated in medium grained sandstone where feldspar content is high(>37%) and cement content is low(carbonate<50%).