苏里格桃七区块盒8段储层储集空间特征  

Reservoir Space Characteristics of He 8 Member in Tao 7 Block,Sulige Gasfield

作　　者：饶秦晶 穆曙光[2] 朱心万[3] 何健 王海峰 

机构地区：[1]中国石油川庆钻探公司地质勘探开发研究院,四川成都610051 [2]西南石油大学外语系,四川成都610500 [3]中国石油长庆油田苏里格气田开发第三项目部,四川成都610051

出　　处：《天然气技术》2010年第3期14-16,共3页NATURAL GAS TECHNOLOGY

摘　　要：桃七区块位于苏里格气田东南部,其储层主要是石盒子组盒8段。通过岩心分析、铸体薄片、扫描电镜等手段对盒8段的储集空间特征进行描述:岩性主要以石英砂岩为主;胶结物以泥质、硅质和凝灰质为主,总胶结物含量一般不超过15%;其储集空间以孔隙为主,主要包括原生及残余孔、粒间溶孔、粒内微溶孔等,有少数的微裂缝存在;喉道类型主要以片状和管束状喉道为主。储层孔隙结构具有小孔喉、分选差、排驱压力高、连续相饱和度偏低和主贡献喉道小等特点。Tao 7 block is located at the southeast of Sulige gasfield.He 8 Member of Shihezi Formation in the block is the mainr eservoir.In this paper,it is illustrated from a study on core,castt hin section and SEM that:(1)He 8 Member is mainly composed ofq uartzose sandstone;(2)the cement is dominantly of argillaceous,s iliceous and tuffaceous,and the content of overall cement is oftenn ot more than 15 percent;(3)reservoir space is mainly pore,including primary residual pore,intergranular dissolution pore,intragranular micro dissolution pore and a little microfracture;(4)t hroat types contain sheetlike and tubular throat;(5)porous structure is characterized by small pore throat,poor sorting,high displacement pressure,lower saturation of continuous phase ands mall main throat.

关 键 词：苏里格 盒8段 石英砂岩 孔隙 喉道 排驱压力 

分 类 号：P618.13[天文地球—矿床学]