Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Floor standing rack
Methods and apparatus to perform time zone determination by a mobile station
Organic electroluminescence element
Multi user MIMO detection utilizing averaged spatial whitening
Optical navigation device with image sensor and inner housing
Wiring structure in a semiconductor device, method of forming the wiring structure, semiconductor device including the wiring structure and method of manufacturing the semiconductor device
Gas flow indicator
  Randomly Featured Patents
High-speed analog photon counter and method
Positioning member for a separation electrode mounted on a clamshell-type copier
Short flint special glasses
Image processing apparatus, image forming apparatus and computer readable medium
Table top
Proton-conducting membrane and use thereof
Corrugated tube mounting jig
Gelled emulsion and process for producing the same
Food warming mat and method for making
Non-turbulent shut-off valve