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    • 3. 发明授权
    • Single-phase annulus-operated sliding sleeve
    • 单相环形滑套
    • US6112816A
    • 2000-09-05
    • US113764
    • 1998-07-10
    • Diana L. OrzechowskiBilly R. Newman
    • Diana L. OrzechowskiBilly R. Newman
    • E21B34/00E21B34/10E21B34/14
    • E21B34/101E21B34/102E21B34/14
    • A sliding sleeve is provided to control the flow of fluids through a tubular conduit. The sliding sleeve may include a housing having a longitudinal bore, at least one annulus pressure port, and at least one fluid flow port. An inner sleeve is disposed for axial movement within the longitudinal bore of the housing, and includes at least one fluid flow port for sealably cooperating with the fluid flow port in the housing to control the flow of fluids through the tubing string. A piston is associated with the inner sleeve and the housing. The piston is initially releasably secured to the housing. The sliding sleeve is initially provided with the fluid flow ports in a closed position, and is actuated by applying annulus pressure to the piston through the at least one annulus pressure port in the housing. The annulus pressure releases the piston from the housing and forces the piston and inner sleeve upwardly to establish fluid communication through the fluid flow ports.
    • 提供滑动套筒以控制通过管状导管的流体流动。 滑动套筒可以包括具有纵向孔,至少一个环形压力端口和至少一个流体流动端口的壳体。 内套筒设置成在壳体的纵向孔内轴向移动,并且包括至少一个流体流动端口,用于与壳体中的流体流动端口密封配合,以控制通过管柱的流体流动。 活塞与内套管和外壳相连。 活塞最初可释放地固定在壳体上。 滑动套筒最初设置有处于关闭位置的流体流动端口,并且通过在壳体中的至少一个环形压力端口对活塞施加环空压力来致动。 环形压力将活塞从壳体释放并迫使活塞和内部套筒向上以建立通过流体流动端口的流体连通。