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    • 4. 发明公开
    • APPARATUS AND METHOD FOR DRILLING ANNULAR CAVITIES
    • 用于钻井环境的装置和方法
    • EP3199709A1
    • 2017-08-02
    • EP16153711.3
    • 2016-02-01
    • Blade Offshore Services Ltd.
    • SWINGLER, John RobertRUFFMAN, William Fleet
    • E02D5/80
    • E02D5/80
    • A drilling assembly (2) for forming an annular cavity in a substrate is disclosed. The drilling assembly comprises an annular inner pile (6) including a first annular part (10), an annular outer pile (4) including a second annular part (8) and cutters (16) mounted to an end of the inner pile. The first annular part is located inside the second annular part, and the cutters are moveable relative to the inner pile between a first condition, in which rotation in a first direction of the inner pile causes the cutters to form an annular cavity in the substrate, and a second condition, in which the inner pile and the cutters can be removed from the cavity while leaving the outer pile in the cavity.
    • 公开了一种用于在基底中形成环形空腔的钻孔组件(2)。 该钻探组件包括包括第一环形部件(10)的环形内桩(6),包括第二环形部件(8)的环形外桩(4)以及安装到内桩端部的切割器(16)。 第一环形部分位于第二环形部分的内部,并且刀具可相对于内部桩在第一状态和第二状态之间移动,在第一状态下内部桩的第一方向上的旋转导致切割器在基底中形成环形空腔, 以及第二种情况,其中内桩和刀具可以从空腔中移出,同时使外桩留在空腔中。
    • 5. 发明公开
    • Anchor device and drilling assembly incorporating such anchor member
    • Ankervorrichtung und Bohranordnung mit solch einem Ankerelement
    • EP2813623A1
    • 2014-12-17
    • EP13171510.4
    • 2013-06-11
    • Blade Offshore Services Ltd.
    • Ruffman, William FleetSwingler, John
    • E02D5/80
    • E02D5/80E02D5/801
    • An anchor device (4) adapted to be anchored in an annular cavity (18) is disclosed. The anchor device comprises a body portion (6) and a cutting portion (12) and is adapted to engage a body member (24) to form a drilling assembly (2). The drilling assembly is adapted to cause the cutting portion to form an annular cavity defining a second radially inner surface (20) spaced from a first radially inner surface (30) and a second radially outer surface (22) spaced from a first radially outer surface (8). The drilling assembly defines at least one fluid delivery channel (26) for delivering fluid to a region adjacent the cutting portion to remove drill cuttings from the region via a space (40) between the first radially outer surface and the second radially outer surface. The anchor device is adapted to disengage the body member after formation of the annular cavity.
    • 公开了一种适于锚定在环形空腔(18)中的锚定装置(4)。 锚定装置包括主体部分(6)和切割部分(12),并且适于接合主体部件(24)以形成钻孔组件(2)。 钻孔组件适于使切割部分形成限定与第一径向内表面(30)间隔开的第二径向内表面(20)的环形空腔和与第一径向外表面(22)间隔开的第一径向外表面 (8)。 钻井组件限定至少一个流体输送通道(26),用于将流体输送到邻近切割部分的区域,以经由第一径向外表面和第二径向外表面之间的空间(40)从区域移除钻屑。 锚固装置适于在形成环形空腔之后使主体构件脱离。