准东西泉地区三叠系储层特征及主控因素  

Characteristics and Main Controlling Factors of Triassic Reservoir in Xiquan Area,Eastern Junggar Basin

作　　者：魏彩茹[1] 许学龙[2] 魏东涛[1] 王彦君[1] 郭娟娟[1] 彭文春[1] 何贤英[2] 

机构地区：[1]中国石油勘探开发研究院西北分院,甘肃兰州730020 [2]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《新疆地质》2014年第4期499-504,共6页Xinjiang Geology

基　　金：国家重大专项前陆盆地油气成藏规律;关键技术及目标评价(2011ZX05003)资助

摘　　要：为搞清西泉地区三叠系储层特征及主控因素,运用岩心、铸体薄片、毛管压力等资料,对储层岩石学特征、物性、孔隙结构进行研究,剖析影响储层物性的主要地质因素沉积相、成岩作用、构造应力作用和异常压力。认为:沉积相带、砂岩粒度是影响储层物性关键因素;成岩作用中压实作用、胶结作用是孔渗降低主要原因,溶蚀作用形成次生孔隙,改善储层物性;构造挤压应力及异常高压可导致储集层的压实,使物性变差。构造应力产生的断裂、微裂缝发育、异常高压的存在有利于孔隙的保存,一定程度上可改善物性。In order to find out Characteristics and main controlling factors of Triassic Reservoir of Xiquan, the integrated use of the core, casting thin sections, capillary pressure data, petrological characteristics, physical properties of the reservoir and pore structure characteristic has carried on the detailed research.Characteristics of reservoir physical property are caused by sedimentary facies, diagenesis, structure and abnormal pressure.Among these factors, sedimentary facies and granularity are the key factor to control reservoir physical property. Compaction and cementation of diagenesis are the major cause to reduce porosity and permeability, nevertheless,dissolution could form secondary porosity and improve reservoir physical property.Tectonic compression and abnormal pressure may cause poor physical property by compaction of reservoir,On the other hand,Fracture and microcrack formed by Tectonic compression and abnormal high pressure is in favor of the preservation of the pore and improve reservoir physical property to a certain degree.

关 键 词：准噶尔盆地东部 西泉 三叠系 储层特征 主控因素 

分 类 号：P618.13[天文地球—矿床学]