Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Neuronal differentiation-inducing peptide and use thereof
Wireless enclosure
Artifact removal in nuclear images
Polypropylene bottles
Processes for producing polyunsaturated fatty acids in transgenic organisms
Projector
Method and apparatus for management and analysis of services in VoIP networks
  Randomly Featured Patents
Vibration damper having a spring plate, tube and base which are joined by a weld
Collaidally stabilized butadiene emulsions
Compound semiconductor laser
Motor-fan shroud with reservoir tank
Wear resistant wrought aluminum alloy and scroll of wear-resistant wrought aluminum alloy
Process for manufacturing an absorbing agent and absorbent material
System and method of determining and recommending a document control policy for a document
Dynamic air cleaner and carburetor pressurization system for air cooled internal combustion engines
Solid-state image sensor with micro-lenses for preventing shading
Register write bit protection apparatus and method