Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Steerable rotary directional drilling tool for drilling boreholes










Image Number 12 for United States Patent #7849936.

A directional drilling apparatus for use in the directional drilling of bore holes is disclosed. The apparatus comprises a plurality of cutting elements movably mounted with respect to a rotatable body member, wherein the cutting elements are movable between first, radially retracted, positions and radially extended, positions for cutting. A rotary valve is provided for synchronising the movement of the cutting elements between their respective extended and retracted positions in accordance with the rotational position of the body member in the bore hole being drilled. Control of the directional drilling system is affected by synchronised movement of the cutting elements from an inner to an outer radial position in accordance with the angular position of the drill bit. A near bit stabiliser contacts with the portion of the well bore which was not removed with the dynamic cutters and this contact exerts a force onto the drill bit.








 
 
  Recently Added Patents
Electronic communication device
Device, system, and method for logging near field communications tag interactions
Processing biomass
Efficient implementation of hash algorithm on a processor
Nonvolatile semiconductor memory device and method for controlling the same
Data paths using a first signal to capture data and a second signal to output data and methods for providing data
Toy
  Randomly Featured Patents
Recorder
Turntable device and manufacturing method thereof
Real-time performance modeling of application in distributed environment and method of use
Apparatus and processes for realistic simulation of wireless information transport systems
Method and system for arming a container security device without use of electronic reader
Pedometer
Adaptor tools and method to expose valve
Apparatus and method for extending the life of athletic balls
Method and apparatus for interactive audience participation at a live spectator event
Blank for easily opened box and the box formed from such blank