储层损害对致密砂岩气体传质效率影响实验研究  

Effect of formation damage on the mass transfer efficiency in the tight sandstone gas reservoir

作　　者：杨建[1,2] 康毅力[1] 周长林[1,3] 张昌铎[1] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(西南石油大学),成都610500 [2]中国石油西南油气田公司博士后科研工作站,成都610051 [3]中国石油西南油气田公司采气工程研究院,四川广汉618300

出　　处：《成都理工大学学报（自然科学版）》2010年第5期490-493,共4页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：博士后基金资助项目(20090451422);国家重大专项(2008ZX05022-004-04HZ;2008ZX05045-003-01);四川省杰出青年学科带头人培养基金资助项目(07ZQ026-113)

摘　　要：在致密砂岩储层流体敏感性、工作液损害评价基础上,利用岩心流动仪开展储层损害后致密岩样气体传质实验,探讨储层损害程度与类型对致密砂岩气体传质影响。实验结果表明,外来液相、固相侵入储层造成不可逆的储层损害,损害程度越高气体传质效率越低,即使增大驱替压差也不能恢复致密砂岩气体传质能力。研究揭示,实现全过程储层保护将是致密砂岩气藏经济开发的重要保证。Compared with conventional oil/gas reservoirs,tight sandstone gas reservoirs are characterized by low porosity,low permeability,and developed natural fractures.Potential damage factors and mechanisms of tight sandstone gas reservoirs are studied by experiments.The results show that there is middle-serious fluid sensibility;the filtrate invasion will be result in solid phase deposition and plug the pore throat.Once the formation damage happens,it will affect the mass transfer efficiency of tight sandstone gas reservoirs.This paper evaluates the tight sandstone gas reservoirs damaged by working fluid and discusses the effect of the extent and types of formation damage on the mass transfer efficiency through laboratory experiments.The laboratory findings show that formation damage can not be clean out,the higher of the extent of formation damage,the lower of the mass transfer efficiency.Even if the drive pressure was increased the tight sandstone gas mass transfer capacity could not be restored.

关 键 词：致密砂岩 气藏 储层损害 敏感性 传质效率 

分 类 号：TE258.3[石油与天然气工程—油气井工程]