Resources Contact Us Home
Variable choke valve

Image Number 7 for United States Patent #7377327.

Embodiments of the present invention generally provide a more reliable variable choke flow control valve. In one embodiment, a variable choke valve for use in a wellbore is provided. The valve includes a tubular housing having an axial bore therethrough and a port through a wall thereof. The valve further includes a tubular sleeve having an axial bore therethrough and first and second holes through a wall thereof and disposed within the housing. The first hole is larger than the second hole, and the sleeve is actuatable among three positions: a first position where the first hole is aligned with the port, a second position where the second hole is aligned with the port, and a third position where the sleeve wall is aligned with the port.

  Recently Added Patents
Adding value to a rendered document
Hypallergenic mosaic antigens and methods of making same
Receiver and transmitter receiver system
Towel clip
Methods and devices for creating, compressing and searching binary tree
Methods and systems for determining the reliability of transaction
Systems and methods for assigning a template to an existing network configuration
  Randomly Featured Patents
Priority flow control valve
Universal shelving
Media holder mouse pad
Sodium silicate solutions
Thermoformable multi-layer film
Method and system for monitoring internet information for group notification, marketing, purchasing and/or sales
Double-container unit for transporting and storing radioactive waste
Plating method and apparatus for controlling deposition on predetermined portions of a workpiece
Method and assembly for retaining a mounting cup with a sealing collar