徐深气田中基性火山岩储层孔隙结构及渗流特征  

The Pore Structures and Percolation Characteristics of Intermediate-basic Volcanic Reservoirs in Xushen Gas Field

作　　者：屈洋[1] 

机构地区：[1]中石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《长江大学学报（自科版）（中旬）》2015年第7期7-11,3,共5页Journal of Yangtze University(Nature Science Edition)

基　　金：国家重点基础研究发展计划项目(2009CB219308)

摘　　要：针对徐深气田中基性火山岩储层孔隙结构复杂多样和渗流机理认识不清的问题,以安达-汪家屯地区中基性火山岩储层为研究对象,结合常规与恒速压汞、核磁共振、CT等试验资料,剖析储层孔隙结构及渗流特征,对比单井产能关系。结果表明:中基性火山岩储层孔隙结构差,以Ⅲ类偏细态型和Ⅳ类细态型为主,具有孔喉小、分选较差、连通性差的特点;储层速敏性弱,为亲水岩石,呈两相流特征,气驱水效率低;建议以Ⅲ类、Ⅳ类孔隙结构为主的储层采用水平井开发调整以及大规模缝网压裂改造。In allusion to the problems of complex pore structures and unclear understanding of percolation characteristics in Xushen Gas Field,by taking the intermediate-basic volcanic reservoirs in Anda-Wangjiatun Area as an object of study,the pore structure and reservoir percolation characteristics of the reservors were analyzed and productivity relations of single well was contrasted in combination with conventional and the constant pressure,NMR,CT experimental data.The results show that the pore structure of the intermediate-basic volcanic' gas reservoirs is poor,it is dominated by Type Ⅲ of less fine and TypeⅣ fine ones,it is characterized by small pore throat,poor sorting,and poor connectivity.The reservoir presents a weak velocity sensitivity as ahydrophilic rock with the features of two-phase flow,low efficiency of gas-drivenwater displacement.It is recommended that in the reservoirs with TypeⅢandⅣ pore structures horizontal wells are used for development adjustment and for large-scale network fracturing and reconstruction.

关 键 词：徐深气田 中基性火山岩 孔隙结构 渗流特征 

分 类 号：TE122.2[石油与天然气工程—油气勘探]