Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Establishing a social network
Packaging for socks
Electric vehicle charging station parking meter systems
Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof
Methods and systems for flicker correction
Compounds and compositions for treating chemical warfare agent-induced injuries
Synergistic compositions for the treatment of topical viral infections
  Randomly Featured Patents
Arterial spin labeling with pulsed radio frequency sequences
Method of fabricating a composite structure of concrete and steel metwork
Soft contact lens
Liquid ejection apparatus and resist pattern forming method
GaN-based nitric oxide sensors and methods of making and using the same
Apparatus suitable for carrying out catalytic process
Determining content to be displayed
Container with cap
Cartridge construction
Lens for light communication