摘要
为实现压裂液的合理、连续、自动返排,克服传统返排方式带来的诸多弊端,进行了压裂液智能返排实时监控技术研究。根据井口压力变化,实时判断压裂液最佳返排时机,实时计算不同压力下最小临界出砂返排流量,自动调节返排阀门开度,自动控制返排流量大小,同时可将返排过程中的压力、排量等数据进行显示、存贮、远程传输。现场试验表明,该技术明显提高了压裂液返排效果和管理效率。
In order to realize rational,continuous and automatic recovery of fracturing fluid,and overcome the drawbacks of traditional method,real-time monitoring of intelligent recovery of fracturing fluid is studied.This technique can judge the optimum backflow timing of fracturing fluid according to wellhead pressure,calculate the minimum critical backflow volume with sand production under different pressure,automatically adjust the opening of backflow valve,automatically control the size of backflow volume,and display,store and transmit data like pressure and discharge volume during backflow process.Field test shows that this technique has obviously improved fracturing fluid backflow and management efficiency.
出处
《特种油气藏》
CAS
CSCD
2007年第5期88-90,93,共4页
Special Oil & Gas Reservoirs
关键词
压裂液
返排
裂缝强制闭合
机理
实射监控系统
fracturing fluid
backflow
forced closing of fracture
mechanism
real-time monitoring system
