Resources Contact Us Home
Whipstock casing milling system

Image Number 2 for United States Patent #6880631.

This invention relates to a whipstock casing milling system and, more particularly, to such a system in which a window mill is secured to a whipstock so that the system may be run into a well, set and operated to open a window in a casing during a single trip. The milling system of the present invention comprises a protrusion (B) provided on the whipface of the whipstock wherein the protrusion (B) forms an extension of a relatively steep ramp surface (45) of the whipface so as to reduce damage to said surface (45) at a juncture (A) of said surface (45) with a relatively shallow ramp surface or parallel surface (46) during use of the system. The protrusion (B) thereby avoids an undercutting of a casing and a thinning of the whipstock.

  Recently Added Patents
Wideband multi-channel receiver with fixed-frequency notch filter for interference rejection
Side portion of a circular saw blade
Protocol delay measuring device and protocol delay measuring method
Particles with high surface charge for crystalline colloidal arrays
Press nut
Image scanning apparatus and image forming apparatus
Lubricating oil compositions
  Randomly Featured Patents
Anti-lockout smart key system
Control mechanism of a bolt stressing unit
Transgenic avians containing recombinant ovomucoid promoters
Method and apparatus for combining laser light
Optimized aerodynamic profile for a turbine blade
Multilayered interconnection substrate having a resin wall formed on side surfaces of a contact hole
Template for displaying information
Aminoacrylates and a process for their preparation
Passive thermal compensation of all-fiber Mach-Zehnder interferometer
Gate valve actuator override mechanism