Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Spinner tool for boreholes










Image Number 3 for United States Patent #3982433.

A spinner tool comprises an elongate, cylindrical housing including a portion having elongate, axially extending, angularly disposed slots formed therethrough at circumferentially spaced points. An impeller is mounted within the housing and comprises circumferentially spaced, axially extending blades which are each J-shaped in cross-section so that the impeller is rotated in response to radially directed fluid flow entering the slots of the housing, but is not rotated in response to axial fluid flow. The impeller is mounted on a shaft which is supported by bearing structure that is substantially self-cleaning under the action of fluids flowing through the housing. A plurality of magnets are secured to the shaft for rotation under the action of the impeller, and a reed switch is positioned for actuation by the moving magnets to generate an output signal indicative of rotation of the impeller. Electronic circuitry is provided in the housing for amplifying and shaping the output signal from the reed switch. The spinner tool is utilized in a well logging system including apparatus for lowering the spinner tool into a borehole and a recorder for providing a plot of the rotation of the impeller as a function of the position of the spinner tool in the borehole.








 
 
  Recently Added Patents
Redistribution layer (RDL) with variable offset bumps
Encoding method and encoding device, decoding method and decoding device and transcoding method and transcoder for multi-object audio signals
Jacket liner
Molecular hydrogen stores and hydrogen transfer reagents for hydrogenation reactions
Method of purifying crude acetone stream
Stevia formulation
Off-line converter with digital control
  Randomly Featured Patents
Correction-factor determination apparatus and method
Motor and motor drive system
Method for improved barbecue grill cooking of food
Enhanced sensitivity interferometric sensors
Constant flow valve actuator
Polymer systems for lung volume reduction therapy
Method of applying wear-resistant materials to turbine blades, and turbine blades having wear-resistant materials
Scanning optical system
Optical communication module and optical communication module product
Electrically conductive polymeric compositions