鄂尔多斯盆地苏南盒8段相对高渗砂岩储层特征分析  

Characteristics analysis of the relatively high permeability reservoir in He 8 member,south block of Sulige gasfield,Ordos basin

作　　者：冯炎松[1,2] 郝龙[1,2] 胡薇薇[1,2] 汪淑洁[1,2] 郑小鹏[1,2] 刘道天[1,2] 

机构地区：[1]低渗透油气田勘探开发国家工程实验室,陕西西安710018 [2]中国石油长庆油田分公司,陕西西安710018

出　　处：《石油化工应用》2017年第3期85-89,93,共6页Petrochemical Industry Application

摘　　要：苏里格气田南区盒8段砂岩储层整体致密,单井产量低,平均单井产量约0.5×104m^3/d。近年在局部发现相对高渗区。利用岩心观察、岩心薄片分析等技术手段,结合沉积环境发育特征,研究储层相对高渗特征。结果表明:(1)盒8段储层以岩屑石英砂岩为主,高渗区岩屑石英砂岩中石英岩岩屑含量高于其他地区;(2)盒8储层以岩屑溶孔、晶间孔为主,高渗区发育粒间孔、晶间孔、溶孔孔隙类型;(3)盒8储层高渗区微相类型为三角洲前缘亚相河口坝。The sandstone reservoir of He 8 member in south block of Sulige gasfield is tight,and low production at each single well which average single well output is about 5 000 m^3 each day.In recent years,the relatively high permeability zone has been found in the local.Base on core observation,core experiment analysis and so on,combined with depositional environment,the characteristics of relatively high permeability reservoir was studied.The results are as follows.（1）The rock types of He 8 reservoirs are lithic quartz sandstone,and the quartz rock fragmen of relatively high permeability sandstone is higher.（2）The reservoir space types include dissolved pores and intercrystal pores,and little primary intergranular pores,but intergranular pores is key type in relatively high permeability sandstone.（3）The sedimentary microfacies of relatively high permeability is mouth bar in delta front transition zone.

关 键 词：苏里格气田南区 致密砂岩 三角洲前缘 

分 类 号：P618.13[天文地球—矿床学]