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US 4,058,166 AGranted
Well setting tool
AssigneeOtis Engineering Corporation
InventorCharles D. Crickmer
Life of this patent
Estimating the term…
Abstract
A well tool and more particularly a hanger or setting tool actuating assembly for hanging a liner in a well or setting various other well equipment in a desired sub-surface position. The actuating assembly includes a magnet which is moved by means controlled remotely therefrom to cause a member magnetically coupled thereto to correspondingly move resulting in setting of the well equipment in the desired location.
Claims24
A well tool and setting tool assembly comprising:
- a well tool mandrel, at least a portion of which is of non-magnetic material;
- a setting tool mandrel coaxially and releasably positioned within said well tool mandrel;
- magnet means carried on the exterior of said setting tool mandrel and movable adjacent said non-magnetic portion of said well tool mandrel between a first and a second axial position;
- setting means carried on the exterior of said well tool mandrel;
- a magnetic-follower member of magnetic material carried on the exterior of said non-magnetic portion of said well tool mandrel and axially movable with respect thereto;
- said magnet means and said member being magnetically coupled wherein axial movement of said magnet means causes corresponding axial movement of said member;
- and said member being connected to said setting means to set said well tool at a desired location upon axial movement of said member from said first to said second axial position.
4 more elements
A well tool comprising:
- an elongated tubular mandrel including at least a portion formed of a non-magnetic material;
- a magnetic-follower member positioned on the exterior of said tubular mandrel and axially movable along that portion formed of a non-magnetic material between a first position and a second position in response to movement of a magnet within said tubular mandrel;
- at least one element of a non-magnetic, insulating material positioned around said tubular mandrel and adjacent each axial end of said magnetic-follower member for confining the magnetic lines of flux to said magnetic-follower member when said magnetic-follower member is affected by a magnet within said tubular mandrel;
- means connected to said magnetic-follower member for setting said tool in a desired location when said magnetic-follower member moves from said first position to said second position;
- and
- means for releasably connecting said tubular mandrel to an actuating tool so that said actuating tool may be positioned within said tubular mandrel and include at least a portion adjacent said magnetic-follower member.
3 more elements
A setting tool comprising:
- an elongated setting tool mandrel;
- a magnet structure movable along the exterior of said setting tool mandrel in a direction parallel to the axis of said setting tool mandrel between a first and second position;
- actuating means, selectively actuatable remotely from said setting tool mandrel, for moving said magnet structure from said first position to said second position;
- and
- means for releasably connecting said setting tool mandrel to a well tool to be set in a well so that said well tool may be positioned around said setting tool and include at least a portion adjacent said magnet structure.
2 more elements
A setting tool comprising:
- an elongated setting tool mandrel;
- a magnet structure movable along the exterior of said mandrel in a direction parallel to the axis of said mandrel between a first and second position, said magnet structure including an annular permanent magnet assembly having annular radially outwardly extending pole pieces on the axial extremeties thereof;
- and
- actuating means, selectively actuatable remotely from said mandrel, for moving said magnet structure from said first position to said second position.
1 more element
A setting tool comprising:
- an elongated setting tool mandrel;
- a magnet structure movable along the exterior of said mandrel in a direction parallel to the axis of said mandrel between a first and second position;
- actuating means, selectively actuatable remotely from said mandrel, for moving said magnet structure from said first position to said second position, said actuating means comprising fluid piston-cylinder means mechanically communicating with said magnet structure for moving said magnet structure from said first position to said second position upon at least a minimum fluid pressure being applied to said piston-cylinder means.
A method of setting a well tool utilizing a remotely controlled setting tool in a sub-surface location comprising the steps of:
- magnetically coupling a permanent magnet portion of said setting tool to a magnet-follower portion of said well tool by means of a permanent magnetic field prior to positioning said well tool in a well;
- positioning the well tool and setting tool therefor at a desired sub-surface location in a well;
- moving said permanent magnet portion of said setting tool to correspondingly move said magnetic field with respect to a non-magnetic portion of said well tool located intermediate said setting tool and said magnetic-follower portion to thereby cause said magnetic-follower portion of said well tool to move axially of said non-magnetic portion;
- and
- setting said well tool at said sub-surface location in response to the axial movement of said magnetic-follower portion.
2 more elements
A method of setting a well tool utilizing a remotely controlled setting tool in a sub-surface location comprising the steps of:
- magnetically coupling a magnet portion of said setting tool to a magnetic-follower portion of said well tool by means of a magnetic field;
- positioning the well tool and setting tool therefor at a desired location;
- pressurizing a fluid within said setting tool to accomplish a moving of said magnet portion of said setting tool to correspondingly move said magnetic field with respect to a non-magnetic portion of said well tool located intermediate said setting tool and said magnetic-follower portion to thereby cause said magnetic-follower portion of said well tool to move axially of said non-magnetic portion;
- and
- setting said well tool at said location in response to the axial movement of said magnetic-follower portion.
2 more elements
Dependencies are inferred from the claim text.