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    • 4. 发明申请
    • GALVANICALLY ISOLATED EXIT JOINT FOR WELL JUNCTION
    • GALVANICALY ISOLATED EXIT JOINT FOR WELL JUNCTION
    • WO2012145160A2
    • 2012-10-26
    • PCT/US2012/032029
    • 2012-04-03
    • HALLIBURTON ENERGY SERVICES, INC.ZIMMERMAN, Michael, PaulSTEELE, David, JoeCHEN, Pao-shih
    • ZIMMERMAN, Michael, PaulSTEELE, David, JoeCHEN, Pao-shih
    • E21B19/16E21B17/02E21B7/04
    • E21B41/0042
    • A well system for forming a window in a casing string positioned in a wellbore. The system includes first and second steel casing joints (462, 464) interconnectable within the casing string. An aluminum exit joint (460) is positioned between the first and second steel casing joints (462, 464). The aluminum exit joint (460) has a first interconnection with the first steel casing joint (462) and a second interconnection with the second steel casing joint (464). The aluminum exit joint (460) is operable to have the window formed therethrough. A first sleeve (470) is positioned within the first interconnection to provide galvanic isolation between the aluminum exit joint (460) and the first steel casing joint (462). A second sleeve (472) is positioned within the second interconnection to provide galvanic isolation between the aluminum exit joint (460) and the second steel casing joint (464).
    • 用于在定位在井眼中的套管柱中形成窗口的井系统。 该系统包括可在套管柱内互连的第一和第二钢套管接头(462,464)。 铝出口接头(460)位于第一和第二钢壳接头(462,464)之间。 铝出口接头(460)具有与第一钢壳接头(462)的第一互连和与第二钢壳接头(464)的第二互连。 铝出口接头(460)可操作以使窗口形成为穿过其中。 第一套筒(470)定位在第一互连件内,以在铝出口接头(460)和第一钢套管接头(462)之间提供电隔离。 第二套筒(472)定位在第二互连件内以在铝出口接头(460)和第二钢套管接头(464)之间提供电隔离。