岩石的成分成熟度和结构成熟度普遍低，而储层物性通常却很好。
Both compositional and textural maturities of the sandstone are low, whereas such reservoir features as porosity and permeability are generally high.
砂岩成分成熟度高（石英＞90％），结构成熟度中等（杂质为0-10％）。
The compositional maturity of sandstone is highter (Q>90%), but texture maturity is middle (matrix 0 10%).
研究区储层砂岩类型主要为石英砂岩，具有成分成熟度和结构成熟度均较高的特点。
Results indicate that reservoir is mainly quartz sandstone which has high component and texture maturity.
该凹陷沉积的碎屑岩具有矿物成分成熟度低和结构成熟度低的特征，所以其埋藏成岩作用十分强烈。
The clastic rocks in this depression are characterized by low maturation of the mineral composition, and low maturation in structure, thus diagenesis due to burial is very strong.
影响构造微裂缝发育的因素是：所处的构造应力部位，岩石成分成熟度、粒度、压实程度和早期填隙物含量。
The factors which influence the microfractures are the structural position, compositional maturity, grain size, the quantity of cements as well as specific compaction.
岩石类型为成分成熟度较低的岩屑长石砂岩和长石砂岩，并合较多的粘土矿物和硬石膏、方解石、白云石胶结物。
The rocks are lithic arkose and arkose which are in low composition saturation and has high clay content, anhydrite, calcite and dolomite cements.
分析表明：从扇三角洲平原到扇三角洲前缘，矿物成分成熟度呈现递增的趋势，河口坝微相的长石砂岩最为发育；
The results show that the mineral comparative maturity of sandstones increases with the distance from the fan-delta plain to the fan-delta front;
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。
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.
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