Patent ID: 6076606
Filing Date: 2000-06-20
Classification: E21B

Abstract:
A whipstock system for insertion into an earth wellbore through a first tubular into a second tubular and for selectively setting within the second tubular, the first tubular having a smaller internal diameter than the second tubular and the first tubular disposed above the second tubular, the second tubular having an interior surface, the whipstock system comprisinga concave,anchor apparatus connected to and below the concave,grip apparatus movably disposed within the anchor apparatus,pushing apparatus below the grip apparatus for pushing the grip apparatus upwardly and outwardly from the anchor apparatus for contacting the interior surface of the second tubular to set the whipstock system therein, andfluid flow apparatus for conducting fluid under pressure through the concave and through the anchor apparatus to push up on the pushing apparatus,the anchor apparatus including an anchor body above the grip apparatus, the anchor body having a fluid flow channel therethrough,the anchor body below and spaced apart from a lower end of the concave,the concave having a fluid flow channel therethrough, anda flexible fluid flow member interconnecting and in fluid communication with the fluid flow channel of the concave and the fluid flow channel of the anchor body.