公开(公告)号：US07252143B2

公开(公告)日：2007-08-07

申请号：US10853595

申请日：2004-05-25

申请人： Freddie L. Sellers ,  Stanley R. Thomas, Jr. ,  Lucio N. Tello

发明人： Freddie L. Sellers ,  Stanley R. Thomas, Jr. ,  Lucio N. Tello

IPC分类号： E21B47/00

CPC分类号： E21B47/09 ,  E21B23/01

摘要： A free point tool has at least one sensor to measure deformation of a stuck conduit in a borehole. A set of anchors is located adjacent to and on each side of the sensor. The anchors include anchor arms that move from a stowed position to an extended position. Each of the anchor arms has a pad, which pad has a contact face. The contact face is structured and arranged to engage the conduit. The pad is coupled to the respective anchor arm in an articulating manner, such as by a pin joint or a ball and socket joint. The pad can be easily coupled to or disconnected from the arm. This allows the pad to be selected for the downhole conditions, including conduit physical characteristics and environmental conditions downhole. The anchors also include cam arms coupled between the anchor arms and an actuator. There are provided at least two sets of anchor linkages of cam arms and anchor arms so as to adapt to the conduit inside diameter.

摘要翻译： 自由点工具具有至少一个传感器，用于测量钻孔中卡住导管的变形。 一组锚固件邻近传感器的每一侧定位。 锚固件包括从收起位置移动到延伸位置的锚臂。 每个锚臂具有垫，该垫具有接触面。 接触面被构造和布置成接合导管。 衬垫以铰接方式联接到相应的锚臂，例如通过销接头或球窝接头连接。 垫可以容易地联接到或与臂断开。 这允许为井下条件选择焊盘，包括管道物理特性和井下环境条件。 锚固件还包括联接在锚臂和致动器之间的凸轮臂。 提供至少两组凸轮臂和锚臂的锚固连杆，以适应导管内径。