PROPERTIES OF RESERVOIR ROCKS IN DUJIATAI OIL FORMATION, BLOCK HUAN 50, WESTERN LIAOHE DEPRESSION
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摘要: 研究区杜家台油层的储集砂体属近源、快速堆积的扇三角洲成因,主要的储集岩石类型包括细砾岩类、不等粒砂岩类、砂岩类及粉砂岩类。不同岩石类型其物性特征差异较大,岩样分析结果表明,储集岩主要属中低渗透储层,其岩性、物性、电性及含油性具有一定的对应关系,面孔隙度与渗透率也具有较好的正相关性。另外,储集岩石类型的展布明显地受沉积微相的控制。Abstract: The reservoir sandbody of Dujiatai oil formation in the study area can be genetically attributed to anear-sourced and rapidly accumulated fan delta.The main types of reservoir rocks include fine gravelstone,inequigranular sandstone,sandstone and siltstone.Different types of rocks differ significantly inphysical properties.The analytical results of rocks with such a genesis can be middle-low permeabilityreservoirs,and there exists a certain correlative relation among their lithologic characteristics,physicalproperties,electricity and oil potentials;moreover,a direct correlation between porosity and permeabilityis recognized.Obviously the distribution of the reservoir rocks are controlled by sedimentary microfacies.
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[1] 刘宝玲,曾允孚主编.岩相古地理基础和工作方法.北京:地质出版社,1985 [2] 罗蛰潭,王允诚编著.油气储集层的孔隙结构.北京:科学出版社,1986 [3] 陈和平.欢50块杜家台油层储集砂体沉积微相.江汉石油学院学报,1997,19(2)
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