分段延时起爆射孔技术在油田水平井中的应用  

Application of Staged Delayed Detonation Perforation Technology in Horizontal Wells of Oilfield

作　　者：文小娟 WEN Xiaojuan(Logging Company,Sinopec Oilfield Service Jianghan Corporation,Qianjiang,Hubei,433123,China)

机构地区：[1]中石化江汉石油工程有限公司测录井公司,湖北潜江433123

出　　处：《江汉石油职工大学学报》2020年第4期42-44,共3页Journal of Jianghan Petroleum University of Staff and Workers

基　　金：国家科技重大专项大型油气田及煤层气开发(2O16ZXO5O38-OO6).

摘　　要：油管输送射孔在水平井长井段施工中存在以下技术难题:一是射孔层段跨度长、夹层多,大量使用夹层枪将导致作业可靠性降低,且施工成本较高;二是多层段同时起爆,瞬间爆轰能量较大,易损伤套管或下井管柱,施工风险大。为有效地解决以上技术难题,在江汉油田引入多级延时起爆射孔技术,通过重新设计作业管柱,并添加多个压力点火头分段延时起爆,大大降低了水平井油管输送长井段射孔的作业风险和施工成本。There are the following technical challenges for TCP in the long horizontal well section:First,the long span of perforation zones and multiple interlayers,the large number of spacer guns will lead to lower operation reliability and higher job cost;second,with multi-zone blasting at one time,instantaneous detonation energy is large,easy to damage casing or downhole string,and there is a higher operation risk.In order to solve the above technical difficulties effectively,the multi-stage delayed initiation perforating technology is introduced in Jianghan oilfield,and the operation risk and cost of TCP in the long horizontal well section are greatly reduced by redesigning the operation string and adding multiple pressure ignition heads for staged delayed detonation.

关 键 词：水平井 长井段 多层段 油管输送射孔 延时起爆 

分 类 号：TE257.1[石油与天然气工程—油气井工程]