The rock types of Chang 4 5 in this region are mostly arkose or lithic arkose sandstone.
研究区内长45储层的岩石类型主要为长石砂岩或岩屑质长石砂岩。
Analysis results of a number of testing data indicated that: sandstone reservoir of Fu-Yang oil-bearing layer has lower composition maturity, mainly are feldspathic arenite and lithic arkose.
大量化验测试资料分析结果表明，扶杨油层砂岩储层成份成熟度较低，岩石类型以岩屑质长石砂岩和长石质岩屑砂岩为主。
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。
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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