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    • 8. 发明授权
    • Flow control apparatus and methods
    • 流量控制装置及方法
    • US6112817A
    • 2000-09-05
    • US73328
    • 1998-05-06
    • Benn VollMichael H. JohnsonJohn W. Harrell
    • Benn VollMichael H. JohnsonJohn W. Harrell
    • E21B34/08E21B43/08E21B43/12E21B43/14
    • E21B43/14E21B34/08E21B43/08E21B43/12
    • The present invention provides a method for obtaining equalized production from deviated wellbores. A plurality of spaced apart flow control device are deployed along the length of the wellbore. The fluid from various zones are drawn in a manner that depletes the reservoir uniformly along the entire length of the wellbore. Each flow control device is initially set at a rate determined from initial reservoir simulations or models. The depletion rate, water, oil and gas content, pressure, temperature and other desired parameters are determined over a time period. This data is utilized to update the initial reservoir model, which in turn is utilized to adjust the flow rate from one or more zones so as to equalize the flow rate from the reservoir. The present invention also provides a flow control device which includes an outer shroud that reduces the effect of fluid impact on the flow control device and one or more tortuous paths which carry the formation fluid into the production tubing. A control unit controls the flow output from the flow control device. The control unit may communicate with surface equipment or act autonomously to take actions downhole based on programmed instructions provided to the control unit.
    • 本发明提供了一种从偏斜井筒获得均匀生产的方法。 多个间隔开的流量控制装置沿着井筒的长度展开。 来自各个区域的流体以沿井筒的整个长度均匀地耗尽储层的方式被拉伸。 每个流量控制装置最初设定在从初始储层模拟或模型确定的速率。 在一段时间内确定耗尽率,水,油和气体含量,压力,温度和其他所需参数。 该数据用于更新初始储层模型,其又用于调节来自一个或多个区域的流速,以便使来自储层的流量相等。 本发明还提供了一种流量控制装置,其包括外罩,其减少流体冲击流量控制装置的影响,以及将地层流体运送到生产管道中的一个或多个曲折路径。 控制单元控制从流量控制装置输出的流量。 控制单元可以与地面设备进行通信,或者根据提供给控制单元的编程指令,自主地采取行动以进行井下作用。