摘要
液氮助排是在气藏地层压裂后或者开发中后期过程中一项重要采气工艺,液氮助排可及时排除压裂后井底未及时排出的压裂液,提高压裂液的返排率,降低压裂液对地层和填充裂缝伤害,缩短作业周期,提高气井产量;另外气田开发中后期产生井筒积液会导致气井产量下降甚至停产,及时排出积液,可以提高单井产量,延长生产寿命。
Liquid nitrogen cleanup after gas reservoir fracturing or at mid-late stage of gas reservoir development is an important gas production technology,it can improve fracturing fluid flowback time and flowback rate,reduce the damage of the fracturing fluid to formations and cracks,shorten the working period and improve gas well productivity;In addition wellbore liquid at mid-late stage of gas reservoir development will cause the gas well productivity to decrease and even cause to stop production.Timely discharging liquid can improve the yield of single well and extend the production life.
出处
《辽宁化工》
CAS
2012年第7期733-735,共3页
Liaoning Chemical Industry
关键词
液氮助排
井筒积液
提高产气量
压裂液返排
liquid nitrogen cleanup
wellbore liquid
improving gas production
fracturing fluid flowback
