Resources Contact Us Home
Variable choke valve

Image Number 11 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
Nonvolatile memory device
Organic light-emitting display with black matrix
Mobile terminal and method for changing page thereof
Medical capsule housing formed by thermal welding
Audio/video program-related hyperlink printer
Semiconductor thin film, thin film transistor, method for manufacturing same, and manufacturing equipment of semiconductor thin film
Storage basket with lid
  Randomly Featured Patents
Method for densifying and refurbishing brakes
Confectionery tablet
Coated optical-fiber bend-fatigue and reliability tester
Photoconductive circuit element pulse generator
Mask for laser irradiation and apparatus for laser crystallization using the same
Ice cream float serving container
Amplifier circuit
Vertically integrated component assembly incorporating active and passive components
Linear type molding unit for a container manufacturing installation
Charged particle beam alignment method and charged particle beam apparatus