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
Solid-state imaging device and camera system
Gaming machine with interactive scorecard
Control method for refrigerator
Safety razor
Illuminated component for a vehicle
Multi-layer display
Bone anchoring device
  Randomly Featured Patents
System and method for applying development patterns for component based applications
Synthetic GTF chromium nicotinate material and its preparation
Mailbox signals flag apparatus
Easily demountable combustion chamber with improved aerodynamic performance
Remote interconnection box utilizing shielding interconnecting brackets
Fashion accessory display device
Housing for tightening elements of hose clips
Hierarchical trust based posture reporting and policy enforcement
Polyalkylene carbonate hot melt adhesive
Video signal multiplexation apparatus