深水全电控智能完井工艺研究

Research on Deep Water Full Electric Control Intelligent Completion Technology

深水开发井修井费用高,作业难度大。面对越来越突出的层间矛盾,常规的合采方式已经无法满足生产需求。开发了一种适用于深水的全电控智能完井工艺,该工艺采用全电控方式,通过电缆控制井下调控工作筒,实现了井下温度、压力、流量等信号的实时测试及井下产液量的实时调整。有效地降低了调控作业费用,提高了调控效率,降低了层间矛盾,有利于整体采收率的提高。对深水开发模式下电信号的传输进行调研与研究,通过脐带缆终端设备(UTA)、水下采油树控制模块(SCM模块)、采油树穿越装置等关键设备,实现了深水开发井智能完井的信号传输。

The cost of workover in deep water development wells is high and the operation is difficult.In the face of more and more prominent interlayer contradictions,the conventional combined mining method has been unable to meet the production demand.A kind of full electronic control intelligent completion technology suitable for deep water is developed.The technology adopts full electronic control mode,and the downhole control barrel is controlled by cable,so as to realize the real-time test of downhole temperature,pressure,flow and other signals and the real-time adjustment of downhole liquid production.It effectively reduces the cost of control operation,improves the control efficiency,reduces the contradiction between layers,and is conducive to the improvement of the overall recovery.This paper investigates and studies the transmission of electric signal in deep-water development mode,and realizes the signal transmission of intelligent completion of deep-water development well through key equipment such as umbilical terminal equipment(UTA),SCM module of subsea Christmas tree,Christmas tree crossing device.