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    • 4. 发明授权
    • Methods of removing a wellbore isolation device using galvanic corrosion
    • 使用电镀腐蚀去除井筒隔离装置的方法
    • US08905147B2
    • 2014-12-09
    • US13491995
    • 2012-06-08
    • Michael FrippSyed HamidPete Dagenais
    • Michael FrippSyed HamidPete Dagenais
    • E21B29/02
    • E21B33/1208E21B33/12
    • A wellbore isolation device comprises: at least a first material, wherein the first material: (A) is a metal or a metal alloy; and (B) is capable of at least partially dissolving when an electrically conductive path exists between the first material and a second material and at least a portion of the first and second materials are in contact with an electrolyte, wherein the second material: (i) is a metal or metal alloy; and (ii) has a greater anodic index than the first material. A method of removing the wellbore isolation device comprises: contacting or allowing the wellbore isolation device to come in contact with an electrolyte; and allowing at least a portion of the first material to dissolve.
    • 井筒隔离装置包括:至少第一材料,其中第一材料:(A)是金属或金属合金; 和(B)能够在第一材料和第二材料之间存在导电路径时至少部分地溶解,并且第一和第二材料的至少一部分与电解质接触,其中第二材料:(i )是金属或金属合金; 和(ii)具有比第一材料更大的阳极指数。 去除井筒隔离装置的方法包括:使井筒隔离装置接触或允许与电解液接触; 并允许至少一部分第一材料溶解。
    • 10. 发明授权
    • Fluid operated well tool
    • 流体操作好的工具
    • US07806184B2
    • 2010-10-05
    • US12118255
    • 2008-05-09
    • Roger L. SchultzKen MichaelPete DagenaisRobert L. Pipkin
    • Roger L. SchultzKen MichaelPete DagenaisRobert L. Pipkin
    • E21B43/25E21B34/08
    • E21B43/16
    • A well tool is operable to receive a flow of fluid. The well tool includes a first hydraulic area on which the fluid acts tending to move a first body to substantially seal against passage of fluid through an aperture. A second, larger hydraulic area is provided on which the fluid acts tending to move a second body. The second body is movable by the fluid acting on the second hydraulic to displace the first body from substantially sealing against passage of fluid through the aperture. An energy storing device is provided that is configured to store energy from movement of the second body until at least a specified amount of energy is stored and release the energy when the second body is moved to displace the first body from substantially sealing against passage of fluid through the aperture.
    • 井工具可操作以接收流体流。 井工具包括第一液压区域,流体在其上趋于移动第一主体以基本上密封以防止流体通过孔径。 提供第二个更大的液压区域,流体在其上趋于移动第二主体。 第二主体可以通过作用在第二液压上的流体移动,从而使第一主体基本上被密封抵抗流体通过该孔的通道。 提供了一种能量存储装置,其被配置为存储来自第二主体的运动的能量,直到存储至少一定量的能量并释放能量,当第二主体移动以使第一主体基本上被密封以抵抗流体通过 通过光圈。