鄂尔多斯盆地胡尖山地区长6段油水分布规律及主控因素分析  

Study on the Distribution Regularity of Oil-Water and Main Controlling Factors in Hujianshan Area,Ordos Basin

作　　者：范泓澈[1] 黄志龙[1] 高岗[1] 李君[2] 吴中彬[3] 刘敬明[4] 

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油勘探开发研究院廊坊分院,河北廊坊065000 [3]中国石油化工股份有限公司胜利油田分公司桩西采油厂,山东东营257237 [4]中国石油新疆油田分公司开发公司,新疆克拉玛依834000

出　　处：《沉积学报》2011年第1期151-157,共7页Acta Sedimentologica Sinica

摘　　要：利用岩芯、录井和测井等基础资料,对胡尖山地区长6段地层沉积相演化特征进行了研究,分析了油水层的分布规律及控制油水层相间分布的地质条件。胡尖山地区砂体微相主要包括水下分流河道、河口坝、远砂坝、河道间四种类型,勘探成果表明不同沉积微相均有油藏分布,厚层叠置砂体多为水层占据,同一时期沉积砂体的不同部位含油性不尽相同。研究区油水的这种复杂分布特征说明沉积相不是控制油水复杂分布的唯一因素。储层内部结构、钙质胶结程度、原油侧向输导能力及不同时期沉积砂体的连通性都对油水层的分布起到一定的控制作用。其中,沉积微相砂体展布特征、原油侧向输导能力及储层内部结构是制约油水分布的主要原因。Based on the fundamental data of core,log and well logging,we studied the sedimentary microfacies types and evolutionary feature of Chang 6 in Hujianshan area and analyzed the distribution regular pattern of the oil and water and geologic condition which controlled the distribution of oil and water layers.The result showed there were four sand-microfacies in Hujianshan area,including the subaqueous distributary channel,channel-mouth bar,distal bar and interdistributary.The schedule of exploration indicates that oil reservoir can be found in different sedimentary microfacies and water layer almost seize thickly-stratified sand.Oil-bearing capability of different parts of sedarenite deposited at the same time is not exactly the same.The complex character about distribution regularity of oil and water shows that sedimentary facies are not the unique factor which controls the complicate distribution of oil and water.Internal reservoir structure,calcarinate degree,the capability of oil lateral migration and the connectivity of sedarenite in different periods all had an effect on distribution regularity of oil and water,but the important reasons were the sand distribution feature,the capability of oil lateral migration and internal reservoir structure.

关 键 词：胡尖山 沉积相 分布规律 储层结构 主控因素 

分 类 号：TE122[石油与天然气工程—油气勘探]