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
Accessing device via communication protocol selection
Apparatus and sensor for adjusting vertical sensor-alignment
Method and apparatus for managing backup channel in multi-channel environment
Process for the production of electric energy by the excitation and capture of electrons from ground or water sources
Particles with high surface charge for crystalline colloidal arrays
Vehicle detection apparatus and method using magnetic sensor
Rate controlled first in first out (FIFO) queues for clock domain crossing
  Randomly Featured Patents
Substituted 1,11-diaminoundecanes, processes for producing them, and their use
Bottle for a laboratory analyzer
Methods and systems for creating a recipe for a defect review process
Truck bed cap structure
Imaging system for luminescence assays
Method of heating a molten metal in a continuous casting tundish using a plasma torch, and tundish for its implementation
Method for calibrating a color marking engine for halftone operation
Method and system for predicting multi-variable outcomes
Automobile tire
Method and apparatus for impact-type inspection of structures