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    • 7. 发明授权
    • Apparatus for isolating and completing multi-zone frac packs
    • 用于隔离和完成多区域压克力包装的装置
    • US08371370B2
    • 2013-02-12
    • US12634577
    • 2009-12-09
    • Richard Y. Xu
    • Richard Y. Xu
    • E21B33/13
    • E21B33/13E03B3/15E03B3/24E21B27/02E21B33/1208E21B43/04E21B43/08
    • A plurality of zones are gravel packed together and then isolated from each other in the gravel annulus by formation of a barrier in the gravel annulus. The screen assembly carries a series of chambers internally that are located between the producing zones generally in the area of blank pipe between the zones. The wash pipe has a shifter associated with it so that extraction of the wash pipe after gravel packing will serially shift pistons that reduce chamber volume where the chemical is stored. The chemical will exit through a rupture disc and nozzle and will commingle with the gravel and make an impervious annular barrier.
    • 多个区域是砂砾堆放在一起,然后通过在砾石环中形成屏障而在砾石环中彼此隔离。 筛网组件内部具有一系列位于生产区之间的腔室,通常在区域之间的空白管道区域中。 洗涤管具有与其相关联的移位器,使得在砾石填充之后提取洗涤管将串联移动活塞,其减少储存化学物质的室体积。 化学物质将通过破裂盘和喷嘴排出,并与砾石混合并形成不透水的环形屏障。