公开(公告)号：US09745806B2

公开(公告)日：2017-08-29

申请号：US14891456

申请日：2014-04-09

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Johan Jelgert ,  Lars-Erik Larsson ,  Krister B Eriksson ,  Ola Fredin

IPC: E21B19/16 ,  E21B7/02 ,  E21B19/20

CPC classification number: E21B19/161 ,  E21B7/02 ,  E21B19/164 ,  E21B19/168 ,  E21B19/20

Abstract: A drill rod gripping apparatus to grip and impart rotational motion to a drill rod including a sled axially mounted at a frame and having first and second jaws moveably mounted at the sled to allow a substantially linear lateral movement across the sled to and from one another. A plurality of rod engagers are mounted at each jaw with at least one of the engagers including an abrasive surface formed from a coating to increase the frictional force between the drill rod and the gripping apparatus.

公开(公告)号：US09650849B2

公开(公告)日：2017-05-16

申请号：US14891532

申请日：2014-04-09

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Johan Jelgert ,  Lars-Erik Larsson ,  Per Vilen ,  Kent Evermark

IPC: E21B19/20 ,  E21B19/16 ,  E21B7/02 ,  E21B19/15 ,  E21B19/24

CPC classification number: E21B19/161 ,  E21B7/02 ,  E21B19/15 ,  E21B19/165 ,  E21B19/20 ,  E21B19/24

Abstract: A drill rod handling apparatus is configured to feed rods to and from a drill string created by a drill rig. The apparatus includes a gripper unit configured to contact and hold a rod to be transported to the drill rig and an alignment tool mounted at the gripper unit to provide correct mating of the rod ends during coupling.

公开(公告)号：US10167688B2

公开(公告)日：2019-01-01

申请号：US14891602

申请日：2014-04-09

Applicant: SANDVIK INTELLECTUAL PROPERTY AB

Inventor： Johan Jelgert ,  Lars-Erik Larsson ,  Per Vilen ,  Kent Evermark

IPC: E21B19/16 ,  E21B19/10 ,  E21B19/07 ,  E21B19/20 ,  E21B3/02 ,  E21B7/04 ,  E21B17/00 ,  B25B17/00 ,  E21B19/08 ,  E21B7/02

Abstract: A method and apparatus for disconnecting an end rod from a drill string coupled together by a threaded connection is provided. A rod handling apparatus includes a gripper unit having a floating sled with a sensor unit configured to monitor relative axial position of the sled relative to a frame of the gripper unit to determine a decoupling of the threaded connection and a separation of an end rod from the drill string.