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    • 7. 发明授权
    • Reducing sand production from a well formation
    • 从井井减少砂产量
    • US06431278B1
    • 2002-08-13
    • US09680124
    • 2000-10-05
    • Frederic GuinotJun ZhaoSimon G. James
    • Frederic GuinotJun ZhaoSimon G. James
    • E21B4317
    • E21B49/00E21B43/02E21B43/267
    • A method and apparatus for performing sand control using fracturing is described. A curve is defined that correlates the percentage of flow through out-of-phase perforations (those perforations not aligned with fractures) with the fracture conductivity over formation permeability. Given a desired production flow, formation conductivity may be defined. This allows the well operator to perform the proper fracturing operation to achieve the desired fracture conductivity. Alternatively, after a well has been fractured, and sand production is observed, a critical flow rate and the corresponding drawdown pressure can be calculated to prevent sand production.
    • 描述了使用压裂进行砂控制的方法和装置。 定义了一个曲线,其将通过异相穿孔(那些穿孔与裂缝不对齐)的流量的百分比与断层电导率相比较地层渗透率相关联。 给定期望的生产流程,可以定义地层导电性。 这允许井操作者进行适当的压裂操作以获得所需的断裂导电性。 或者,在井已经断裂并且观察到砂产生之后,可以计算临界流量和相应的压降压力以防止产沙。