公开(公告)号：US4466617A

公开(公告)日：1984-08-21

申请号：US500213

申请日：1983-06-02

申请人： James W. Montgomery

发明人： James W. Montgomery

IPC分类号： E21B33/122 ,  F16J15/12

CPC分类号： E21B33/122

摘要： A sandwich shaped piston seal is shown for sealing multiple mandrel well packers. The seal has a plate shaped center portion made of a compliant elastomer material having upper and lower surfaces and an outer rim. The center portion is provided with multiple holes for receiving multiple mandrels with the mandrels being arranged perpendicular to the upper and lower surfaces. A pair of external backup rings circumscribe the outer rim of the elastomeric center portion and a pair of internal backup rings circumscribed the interior surface of each of the mandrel holes. A pair of header plates surround the center portion in sandwich fashion, the plates being provided with multiple holes corresponding to the holes in the center portion for receiving the mandrels. The backup ring design prevents extrusion of the elastomeric sealing portion when pressure acts upon the seal.

摘要翻译： 显示了三明治形状的活塞密封件用于密封多个心轴井封隔器。 密封件具有由具有上表面和下表面的外部边缘的柔性弹性体材料制成的板状中心部分。 中心部分设置有多个孔，用于容纳多个心轴，心轴垂直于上表面和下表面布置。 一对外部备用环围绕弹性体中心部分的外边缘以及一对内部支承环，该内部支承环围绕每个心轴孔的内表面。 一对集管板以夹层方式围绕中心部分，这些板设置有与中心部分中的孔对应的多个孔，用于接收心轴。 当压力作用在密封件上时，支撑环设计可以防止弹性体密封部分的挤出。

公开(公告)号：US4078606A

公开(公告)日：1978-03-14

申请号：US750830

申请日：1976-12-15

申请人： James W. Montgomery

发明人： James W. Montgomery

IPC分类号： E21B33/129 ,  E21B33/1295 ,  E21B33/12

CPC分类号： E21B33/12955 ,  E21B33/1294

摘要： Disclosed is pressure responsive holding apparatus for maintaining a first cylindrical element fixed against fluid pressure induced longitudinal movement relative to a second element generally circumscribing the first element. The apparatus includes a gripping device, carried by the first element, and reponsive to fluid pressure between the two elements by moving into anchoring engagement with the second element to hold the first element fixed relative to the second element with force which increases as the fluid pressure increases. In the embodiment shown, the holding apparatus is used to retain a bypass passage through a well packer set in a well conduit closed by preventing fluid pressure from raising a mandrel assembly within the packer body to open the bypass passage.

摘要翻译： 公开了一种压力响应保持装置，用于保持第一圆柱形元件相对于大致围绕第一元件的第二元件固定而不受流体压力引起的纵向移动。 所述装置包括由所述第一元件承载的夹持装置，并且通过与所述第二元件的锚定接合运动而与所述第二元件固定接合，以保持所述第一元件相对于所述第二元件固定的压力，所述夹紧装置随着所述流体压力而增加的力 增加 在所示的实施例中，保持装置用于通过阻止流体压力升高封隔器主体内的心轴组件以打开旁路通道，将旁路通道保持通过密封的井管井中的井封隔器。