昆北油田切12区E31碎屑岩储层特征及控制因素  

Characteristics and control factors of the E_3~1 clastic rock reservoir in the Q12 block of the Kunbei oilfield

作　　者：林伶[1] 牟中海[1] 马达德[2] 寇福德[2] 景海权[1] 

机构地区：[1]西南石油大学,四川成都610500 [2]中油青海油田分公司,甘肃敦煌736202

出　　处：《特种油气藏》2011年第4期26-29,136,共4页Special Oil & Gas Reservoirs

基　　金：中国石油天然气股份有限公司重大科技项目"柴达木盆地油气勘探开发关键技术研究"(07-01Z-01-02)

摘　　要：通过对昆北油田切12区下干柴沟组下段(E31)储层岩石学特征、储集空间特征、孔隙结构、物性特征及控制因素的分析和研究,认为工区储层岩石类型以岩屑长石砂岩、长石岩屑砂岩为主;储集空间以原生粒间孔为主,次生溶孔和裂缝次之,属低孔特低渗储层。影响研究区储层物性的因素有沉积相、成岩作用、构造运动,其中沉积相和胶结作用是主要的控制因素。储层特征及控制因素的研究有助于进一步认识和预测工区储层的发育规律。The lower member of the lower Ganchaigou formation(E31) in the Q12 block of the Kunbei oilfield is studied for petrology,reservoir space,pore structure,physical properties and control factors.It is revealed that in the work area the dominant lithology includes lithic-arkose and arkose-lithic sandstones;the dominant reservoir space is primary intergranular pores,the next is secondary dissolved pores and fractures,representing low porosity and ultra-low permeability reservoir.Sedimentary facies,diagenesis and tectonic movement are the factors affecting reservoir property,with sedimentary facies and cementation as the main control factors.The study on reservoir characteristics and control factors is helpful to further understanding and prediction of the trend of reservoir development.

关 键 词：储层特征 储层物性 控制因素 下干柴沟组 昆北油田 

分 类 号：TE122.2[石油与天然气工程—油气勘探]