Method and apparatus for setting a whipstock
AssigneeAtlantic Richfield Company
InventorsCurtis G. Blount, Charles M. Hightower, Charles D. Hailey
Life of this patent
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Abstract
A method and apparatus for setting a whipstock onto a packer in a wellbore wherein the whipstock is laterally and rotatably movable after it is fixed to the packer, whereby the whipstock can move laterally while rotating so that opposite ends of the whipstock can be made to contact opposing inner walls of the wellbore.
Claims20
In a method for setting a whipstock which has first and second ends onto a packer which is fixed in a wellbore in the earth, said wellbore having a long axis that extends into the earth, the improvement comprising the stage of:
- providing a coiled tubing injection unit carrying coiled tubing for insertion into a well conduit that extends along said long axis;
- providing at one end of said coiled tubing a tool combination comprising a setting tool which carries said whipstock, said whipstock being connected to said setting tool by a shear member, said whipstock carrying a connector that is rotatably and slidably connected to said whipstock so that said whipstock can move laterally to said long axis and rotate about an axis that is transverse to said long axis, said connector carrying a stinger that is adapted to engage said packer;
- passing said tool combination into said wellbore by said coiled tubing until said stinger engages said packer;
- moving said whipstock laterally to said long axis and rotating said whipstock about an axis transverse to said long axis until said first and second ends of said whipstock come into contact with opposing sides of said well conduit;
- and shearing said shear member to separate said setting tool from said whipstock.
Apparatus for setting a whipstock onto a packer in a wellbore comprising a whipstock which has a first sloping end and an opposing second end, said second end carrying a connector, said whipstock having a long axis that extends from said first end to said second end, said connector being rotatably and slidably connected to said whipstock so that said connector can move laterally to said long axis and rotate about an axis that is transverse to said long axis.
Dependencies are inferred from the claim text.