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
Fluorine-free fused ring heteroaromatic photoacid generators and resist compositions containing the same
Social community generated answer system with collaboration constraints
Enhanced claims damage estimation using aggregate display
Message value indicator
Method and apparatus for monitoring and/or controlling the curing of cements used in medical procedures
Parallel active optical cable
DFPase enzymes from Aplysia californica
  Randomly Featured Patents
Selectable mode vocoder management algorithm for CDMA based networks
Display control circuit for reading display data from a video RAM constituted by a dynamic RAM, thereby refreshing memory cells of the video RAM
Data synchronization method and related apparatus for a display device
Digital transmitter employing digital signal generator utilizing stored waveforms
Sialon phosphor, process for producing the same, and illuminator and luminescent element employing the same
Thermally compensated differential
Embroidery data processing apparatus
Corn cDNAs encoding corn Mlo proteins
Semiconductor device
Mitigating access penalty of a semiconductor nonvolatile memory