梨树断陷十屋-七棵树油田区营Ⅰ-沙Ⅰ段储层微观特征分析  

ANALYSIS OF MICROSCOPIC CHARACTERS OF RESERVOIR OF SHA I AND YING I MEMBERS IN THE SHIWU-QIKESHU OIL FIELD,LISHU FAULT DEPRESSION

作　　者：王黎[1] 王果寿[2] 邱岐[2] 张欣国[2] 王东燕[2] 吕剑虹[2] 

机构地区：[1]成都理工大学能源学院,四川成都610059 [2]中国石化勘探开发研究院无锡石油地质研究所,江苏无锡214126

出　　处：《矿物岩石》2014年第1期114-120,共7页Mineralogy and Petrology

摘　　要：通过对34口钻井270个岩心样品的180个铸体薄片、38个扫描电镜、49个压汞、37个阴极发光、26个X衍射及10个包裹体等测试分析,对研究区营Ⅰ-沙Ⅰ段储层的岩石学特征、孔隙结构特征及储层物性等微观特征进行了较深入地研究。营Ⅰ-沙Ⅰ段储层岩石类型以长石岩屑砂岩和岩屑长石砂岩为主,少量长石砂岩及岩屑砂岩。碎屑颗粒结构以细、中砂为主,少量砂砾岩。岩石颗粒分选较好—中等,呈次棱角状—次圆状,成分、结构成熟度低;营Ⅰ-砂Ⅰ段储层孔隙类型主要有:原生粒间孔、粒间溶蚀扩大孔及少量裂缝的组合,其主要的油气储集空间为原生粒间孔和粒间溶孔;砂岩储层所经历的主要成岩作用有压实作用、胶结作用、溶蚀作用及构造破裂作用;其中对储层物性具建设性的作用主要有溶蚀作用和构造破裂作用;该区储层已进入中成岩阶段A期,其成岩作用相对较强。The characteristics of petrology, pore textures, reservoir physical property of Ying 1 Member and Sha 1 Member in the studied area were studied by means of analysis of casting thin sections,SEM,CL,X-ray and inclusions. It was showed that the Ying 1 Member and Sha 1 Mem- ber were composed of feldspar lithic sandstone and lithic feldspar sandstone. Clastic grains were mainly fine grained and mid grained with minor glutenite,with subangular to subcircular shapes and well developed sorting. Their pore types mainly consist of primitive intergranular pores,inter- granular dissolved pores with minor fissures and the former two types were the accumulation space for oil and gas. Sandstones were experienced diagenesis of compaction, cementation, corro- sion and structural fracturing, with the latter two as the constructive processes for the reservoir property. Reservoir in this area was at the stage of A diagenesis and wag a relative strong diagene- sis.

关 键 词：储层微观特征 砂岩储层 营I一沙I段 七棵树一十屋油田区 梨树断陷 

分 类 号：TE122.23[石油与天然气工程—油气勘探]