辽西低凸起太古宇变质岩潜山储层控制因素研究  

Controlling factors analysis of Archaezoic metamorphic buried hill reservoirs in Liaoxi low salient

作　　者：陈建波 潘玲黎 童凯军 吕坐彬 

机构地区：[1]中海石油(中国)有限公司天津分公司渤海石油研究院,天津塘沽300452

出　　处：《石油地质与工程》2016年第4期30-35,146-147,共6页Petroleum Geology and Engineering

基　　金：国家自然科学基金重点项目“储层裂缝形成机理”(40772089)

摘　　要：在岩心、铸体薄片、成像测井及地震等资料分析基础上,研究了渤海辽西低凸起JZ25-1S太古宇变质岩潜山储层的岩石学特征、储集空间类型及裂缝发育主控影响因素。研究表明:区内潜山岩性为片麻岩类及其碎裂岩类,矿物结晶较粗、暗色矿物含量低、碎裂作用较强,为储集层发育形成提供了良好的物质基础。储集空间类型包括裂缝、溶蚀孔洞和微孔隙,其中以构造裂缝为主。变质岩储集层裂缝的形成是沙三沉积期拉张应力场和东营期右旋走滑应力场叠加作用的结果。此外,储层裂缝发育的其它控制因素包括储集层岩性、古风化作用及后生成岩作用等。Based on the core,thin sections,imaging logging and seismic data,the study on petrography characteristics,the reservoir space types and the main controlling factors of facture development of JZ25-1S,the Archaezoic metamorphic buried hill reservoirs in Liaoxi low salient has been carried out.The results indicate the buried hill's lithology is of gneiss and cataclasite,and it has coarser mineral crystallization,lower dark mineral content and stronger fracture effect,which can provide a good material base for reservoir development and formation.Reservoir space types include fractures,solution caves and micro pores,and structural fractures are the main reservoir space.The formation of the fractures in the metamorphic buried hill reservoir is the superimposed result of the tensile stress field during member 3of Shahejie formation and the right-lateral strike-slip stress field during Dongying formation in Paleocene.In addition,there are other development controlling factors of the fractured reservoirs including reservoir lithology,ancient weathering,and later diagenesis and so on.

关 键 词：渤海海域 辽西低凸起 变质岩潜山 储集层特征 控制因素 

分 类 号：TE112.23[石油与天然气工程—油气勘探]