孔隙与砂岩组构密切相关，孔隙更容易产生于长石含量高（>37% ）、且胶结物含量低（碳酸盐<5 % ）的中粒砂岩中。
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%).
砂岩中孔隙以次生粒间溶孔为主，发育程度与岩性和次生浊沸石的选择性溶蚀有关。
The secondary porosity develop in sandstone. It is controlled by the lithology and the selective dissolution of laumonite.
长8油层组储层岩性以细—中粒岩屑长石、长石岩屑砂岩为主。
Lithology of the Chang-8 oil reservoirs is mainly fine-medium lithic feldspathic sandstone and feldspathic 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。
The sandstones of reservoir were mainly middle to coarse grain feldspar detritus sandstone, detritus feldspar sandstone 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。
The sandstones of reservoir were mainly middle to coarse grain feldspar detritus sandstone, detritus feldspar sandstone and detritus sandstone.
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