RESEARCH AND APPLICATION OF SUSPENSION LINER REINFORCEMENT SUPPORTING TECHNOLOGY IN HORIZONTAL WELL

According to the geology,technology and construction factors which led to the casing damage in Jinzhou oilfield horizontal well,a suspension liner reinforcement supporting technology was developed,it consists of casing detection,hydraulic plastic expanding,casing milling for hole enlargement,wellbore sand cleaning,and liner reinforcement technology.Since 2009,this technology was used in 5 wells,the success rate was 100%,the longest cementing segment was 675m,it has lower construction cost,simple operation,high reinforcing success rate,which could effectively prevent the casing secondary damage,and has good application value.