无线智能分层注采技术研究

Intelligent Separate Layer Injection and Production Technology Based on Wireless Telemetry

针对当前油田分层注采技术灵活性差,效率低,调配需要现场施工及工作量大的问题,在室内试验的基础上,研究了一种基于智能测控装置和压力/流量脉冲载波传输的无线智能分层注采技术。试验结果表明:该技术能够高效、灵活地实现对井下分层流量的实时控制,免去了现场井下投捞测试和调配的工作量;通过集成化的井下智能配水器与智能配产器等核心工具,可灵活可靠地对井下流量和压力等生产参数进行测试与控制;利用井口测控装置能够对井筒连续相流体施加压力或流量扰动,产生附带地址和动作信息的可执行脉冲指令,实现井口与井下的无线信号传输;该技术既能实时监测油水井产层流量、压力等生产动态,又可以在线控制分层注采液量,从而有效减少层间干扰、强化层间均衡动用。研究结果可为转流线、调流场以及注采耦合等水驱开发调整模式提供一种便捷的工程技术手段。

The poor flexibility and low efficiency of the current separate layer injection and production technology results in heavy workload.Through the indoor test,a kind of wireless intelligent separate layer injection and production technology based on intelligent measurement and control device and pressure/flow pulse transmission is studied.The test results show that the integrated downhole intelligent water distributor and intelligent production control device can flexibly and reliably measure and control the downhole production parameters such as flow and pressure.The wellhead measurement and control device can apply pressure or flow disturbance to the continuous phase fluid in the wellbore to produce executable pulse command with address and action information,thus realizing wireless signal transmission between the wellhead and the downhole tool.The intelligent separate layer injection and prodution technology can allow not only real-time monitoring the production state of oil and water wells such as flow rate and pressure,but also controlling the amount of injection and production,thereby effectively reducing interlayer interference and enhancing interlayer balance.The developed technology can provide a convenient engineering measure for water flooding development adjustment such as diverting flow line,flow field regulation and injection-production coupling.