The Shanbei oil pool in Jiuxi basin with sandstone reservoir beds of the Huoshaogou Formation of the Eogene, has long been taken as an example of hydrodynamically trapped oil pools.
酒西盆地单北油田下第三系火烧沟组砂岩油藏长期以来被认为是水动力圈闭油藏的范例。
So that a large amount of low-mature oil was generated and subsequently migrated into sandstone belt with first secondary porosity created by the formation water released from clays.
这样，大量低成熟石油能够生成，并随着粘土释放出的层间水运移到砂岩的第一次生孔隙密集在中。
A shale formation with sandstone interbedded is also a potential oil bearing formation.
以泥岩为主，夹砂岩的地层也可能是油气层。
It may be concluded that the sedimentary facies, tectogenetic movement, the formation water and geothermic gradient are all important factors to form the oil-bearing sandstone.
结果表明，沉积相、构造运动、地层水的性质及地温梯度等都是促成含油砂岩形成的重要因素。
The main oil-bearing horizons of the No. 2 structural belt of the Nanpu subbasin are sandstone of the First Member of the Paleogene Dongying Formation and Ordovician limestone.
南堡凹陷南堡2号构造带主要含油层段为古近系东营组东一段砂岩及奥陶系灰岩。
It is found that the oil effective permeability of low middle porous sandstone is related with the porosity, water saturation and shale volume of formation.
研究发现，油的有效渗透率与中低孔隙性储层的孔隙度、含水饱和度及泥质含量有关。
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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