Apparatus and method for orientating a downhole control tool

Abstract

A downhole well tool ( 1 ) for orientation of a work tool ( 16 ) comprises an anchor ( 6 ), an energy unit ( 2 ) and a controller ( 22 ). The downhole well tool ( 1 ) is equipped with an axial displacement part ( 10 ) and a rotational part ( 14 ), where at least one of the axial displacement part ( 10 ) and the rotational part ( 14 ) is controlled by a programmable controller ( 22 ) and designed to steer the work tool ( 16 ) along any path within a work area.

1 . An apparatus for orientating a work tool; the apparatus comprising an anchor, an energy unit, a programmable controller, an axial displacement part and a rotational part, at least one of the axial displacement part and the rotational part being controllable by the programmable controller so that the work tool can be steered along any path within a work area.  
     
     
         2 . An apparatus as claimed in  claim 1 , wherein the axial displacement part comprises a telescopic member.  
     
     
         3 . An apparatus as claimed in  claim 2 , wherein the relative position of the telescopic member is transmittable to the controller by means of a position transmitter.  
     
     
         4 . An apparatus as claimed in  claim 1 , wherein the relative position of the rotational part is transmittable to the controller by means of an angle transmitter.  
     
     
         5 . An apparatus as claimed in  claim 1 , further comprising a second anchor, the axial displacement part being located between the first anchor and the second anchor.  
     
     
         6 . An apparatus as claimed in  claim 1 , further comprising a work tool operably coupled to the axial displacement part or rotational part.  
     
     
         7 . An apparatus as claimed in  claim 6 , wherein the work tool is a cutting tool.  
     
     
         8 . An apparatus as claimed in  claim 7 , wherein the cutting tool is a high pressure water cutter.  
     
     
         9 . A method of orientating a work tool in a wellbore, comprising: 
 setting an anchor in the wellbore; and    directing the work tool with an axial displacement part and a rotational part operably connected to the anchor;    wherein at least one of the axial displacement part and rotational part are controlled by a programmable controller.