济阳坳陷第三系不同成因类型砂岩体孔隙分布特征及孔隙演化史——以孤东油田、胜坨油田、东辛油田为例  

Pore distribution characteristics and evolution history of Tertiary sand bodies of different genetic types in Jiyang depression——taking Gudong oilfield,Shengtuo oilfield,and Dongxin oilfield as an examples

作　　者：王朴[1] 魏广振[1] 谢忠怀[1] 郝运轻[1] 刘宝军[1] 

机构地区：[1]中国石化胜利油田分公司地质科学研究院,山东东营257015

出　　处：《石油地质与工程》2008年第1期9-11,共3页Petroleum Geology and Engineering

摘　　要：主要利用薄片、物性等资料,以孤东、胜坨、东辛油田诸砂岩体为例,分析了不同时代、埋深和成岩阶段的砂岩体孔隙分布特征。由于成因和成岩史的差异,时代新、埋藏浅、成岩弱的河流相砂岩体为原生孔隙储油;时代、埋深和成岩居中的三角洲砂岩体储集层多为原生孔隙储油,也有次生孔隙储油者;时代老、埋藏深和成岩强的浊流砂岩体储层以次生孔隙和微孔隙储油为主,砂体不同微相的孔隙分布也有明显差别。在此基础上以深层浊积砂岩为例建立了随埋深(或地温)的增大,其孔隙类型按原生孔隙→混合孔隙→次生孔隙和微孔隙→残余孔隙的演化模式。On the basis of slices,SEM,X-diffraction and physi- cal properties of sandstones from the sand bodies of Gudong, Shengtuo and Dongxin oilfields,analyses were performed on the pore distribution characteristics of sand body of different epochs,burial depths and diagenetie stages.The results in- dicate that the fluvial facies sand body of earlier epoch,shal- lower burial depth and weak diagenesis history is of the pri- mary porosity oil storage,and the delta sand body reservoir of medium geologic epoch,burial depth and diagenesis histo- ry is of the primary porosity oil storage with the secondary porosity oil storage.The turbidite reservoir of later epoch, deeper burial depth and higher diagenesis history is of the secondary porosity and micropore oil storage.The pore dis- tribution characteristics of different microfacies are of obvi- ous difference.Based on the above understanding,an evolu- tionary pattern of pores in the deep turbitc reservoir is estab- lished:with the increase of the burial depth (geotherm),the pore type evolves from the primary pore,the composite one, to the secondary one,and/or the micropore to the residual one.

关 键 词：济阳坳陷第三系 砂岩体 孔隙分布特征 孔隙演化史 

分 类 号：TE112.23[石油与天然气工程—油气勘探]