公开(公告)号：US4364430A

公开(公告)日：1982-12-21

申请号：US209620

申请日：1980-11-24

申请人： David D. Szarka

发明人： David D. Szarka

IPC分类号： E21B23/00 ,  E21B23/02

CPC分类号： E21B23/006 ,  E21B23/02

摘要： An improved anchor positioner for use with anchors incorporated in a liner or casing of a well bore. The anchor positioner comprises upward-facing spring arms having downward facing shoulders on the exterior thereof, the spring arms, when extended radially outward, engaging a shoulder on an anchor to locate a tool string in a well bore. An indexing head, rotatable in response to axial reciprocation of the tool string, retracts the spring arms from the anchor. A subsequent reciprocation of the tool string will cause the spring arms to extend radially outward and to be locked in the extended position by contact with the indexing head, thus locking them into the anchor against downward movement. Retraction of the spring arms is effected by force from contact with inwardly-inclined faces on the indexing head, and extension of the spring arms is effected by outward force exerted by contact of the inside of the spring arms with axial grooves on the outside of the indexing head. Rotation of the indexing head and therefore change of radial alignment is effected through a pin and slot mechanism.

摘要翻译： 一种改进的锚固定位器，用于结合在井眼的衬套或套管中的锚固件。 锚固定位器包括向上的弹簧臂，在其外部具有向下的肩部，弹簧臂当径向向外延伸时，与锚固件上的肩部接合以将工具柱定位在井眼中。 能够响应于工具串的轴向往复运动而转动的分度头将弹簧臂从锚固件缩回。 随后的工具串的往复运动将导致弹簧臂径向向外延伸并且通过与分度头的接触而被锁定在延伸位置，从而将它们锁定到锚中以防止向下运动。 弹簧臂的缩回是通过与分度头上的向内倾斜面的接触的力来实现的，并且弹簧臂的延伸通过由弹簧臂的内部与外部的轴向凹槽接触而施加的向外的力来实现 索引头 分度头的旋转，因此径向对准的变化通过销和槽机构实现。