The reservoir sandstones consist mostly of lithic sandstones and feldspathic litharenite with lower mineral maturity.
储集砂岩类型主要为矿物成熟度较低的岩屑砂岩和长石岩屑砂岩。
The main types of clastic sandstones are feldspathic litharenite and lithic arkose in the Cretaceous of the Songliao basin.
松辽盆地白垩系砂岩以长石岩屑砂岩和岩屑长石砂岩为特征。
The reservoir lithology of oil bearing Huagang formation on Sudi structural belt in Xihu depression is mainly lithic arkose, feldspathic litharenite and feldspathic quartzitic sandstone.
西湖凹陷苏堤构造带花港组油层储集岩主要为岩屑长石砂岩、长石岩屑砂岩、长石石英砂岩，岩屑含量较少，岩石成分成熟度和结构成熟度均较高。
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