Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for forming a window in a subsurface well conduit










Image Number 4 for United States Patent #5484021.

A method and apparatus for forming a window in well casing. First, using coiled tubing, a two stage whipstock is set in the well casing through the production tubing. Next, a jointed milling assembly is inserted through the production tubing, also using the coiled tubing. The travel of the mill is guided by the two stage guide surface of the whipstock, and the joint in the milling tool allows the direction of the mill to change. Thus, the mill impinges on the well casing at a relatively acute angle to the longitudinal axis of the casing reducing the likelihood that the mill will bite into the guide surface of the whipstock instead of the well casing.








 
 
  Recently Added Patents
Direct file transfer between subscribers of a communications systems
Method for manufacturing light emitting diodes
Method and system for selecting a target with respect to a behavior in a population of communicating entities
Redundant power delivery
Bandana
Binary-to-gray converting circuits and gray code counter including the same
Methods and systems for aggregating and graphically representing information associated with a telecommunications circuit
  Randomly Featured Patents
Shield case
PIR motion detector circuitry with enhanced false-activation protection
Field emission device, display adopting the same and method of manufacturing the same
Communication apparatus capable of automatic activation of forwarding setup instructed by remote access, and control method thereof
Adhesive for bonding EPDM rubber roofing membrane and bonding method employing same
Method for printing a color filter with radiation curable inks
One-piece adjustable seat cover
Measuring device and method for determining the position of an electrically conductive test object
Power source utilizing encapsulated lithium pellets and method of making such pellets
Strained semiconductor, devices and systems and methods of formation