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公开(公告)号：US5468153A
公开(公告)日：1995-11-21
申请号：US168816
申请日：1993-12-15
CPC分类号： E21B17/05 , E21B17/028 , H01R39/64
摘要： A rotatable electrical connector or swivel is used in a substantially vertical subterranean portion of a drill string within a drill pipe. The swivel has an enclosed oil filled chamber having a first shaft concentrically mounted therein. The first shaft protrudes from the chamber and is electrically connected to one end of a wireline which is used for electrical connection between the surface and instruments located downhole. Within the interior of the oil filled chamber the first shaft is attached to a first member disposed within the complementary surface of a second member concentrically aligned with the first member. The second member includes a second shaft which protrudes from the oil filled chamber and is connected to the other end of the wireline. One of the two shafts is rotatably mounted in bearing within the chamber so that the complementary surfaces of the first and second members are in the relationship of a rotor and stator. Continuous, electrical contact between the rotor and stator surfaces are assured by placement of a plurality of berrylium copper wire spring wipers between the rotors and stators. The enclosure of the oil filled chamber, includes an elastic member which permits equalization of the internal oil pressure within the chamber with the external hydrostatic pressure of the drilling fluid or other fluid present in the drill pipe.
摘要翻译： 可旋转的电连接器或旋转件用于钻杆内的钻柱的基本垂直的地下部分。 旋转体具有封闭的充满油的腔室，其具有同心地安装在其中的第一轴。 第一轴从腔室突出并且电连接到电缆的一端，该线缆用于位于井下的表面和仪器之间的电连接。 在充油室的内部，第一轴附接到设置在与第一构件同心对准的第二构件的互补表面内的第一构件。 第二构件包括从充油室突出并连接到电缆的另一端的第二轴。 两个轴中的一个可旋转地安装在腔室内的轴承中，使得第一和第二构件的互补表面处于转子和定子的关系。 通过在转子和定子之间放置多个berrylium铜线弹簧擦拭器来确保转子和定子表面之间的连续的电接触。 充油室的外壳包括弹性构件，其允许室内的内部油压与钻井液中存在的钻井液或其它流体的外部静水压力平衡。
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