Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Acoustic well logging device for detecting compressional and shear waves










Image Number 5 for United States Patent #4516228.

A borehole logging system employs a compressional wave transmitter and a shear wave transmitter. The transmitters are alternately fired to impart compressional and shear waves into the formations surrounding the borehole. A bender-type receiver, spaced apart from the transmitter in the borehole is alternately gated so that the voltages across its pair of piezoelectric planar surfaces are subtracted during the expected time period of symmetrical motion of the receiver to provide a compressional wave output and added during the expected arrival time period of unsymmetrical motion of the receiver to provide a shear wave output.








 
 
  Recently Added Patents
Semiconductor device and method for manufacturing same
Newly identified human rhinovirus of HRV-C and methods and kits for detecting HRV-Cs
Glove
Information-provision control method, information reproduction system, information-provision apparatus, information reproduction apparatus and information-presentation control program
Isoselective polymerization of epoxides
Active element machine computation
Image processing apparatus and image processing method
  Randomly Featured Patents
Water-jet drive mechanism for driving and controlling of particularly shallow-draught watercrafts
Aerator pad for fluidizing particulate materials
Browse relevance
Turbine blade core cooling apparatus and method of fabrication
Surgical sling for positioning a harvested kidney during surgical reattachment
Hydrazine-free solution deposition of chalcogenide films
Method for treatment of surfaces with ultraviolet light
Scene-start and -end reference indicator arrangement for projector storing scene-start and -end frame counts
Optical communication network with passive monitoring
Method of treating a packaging element, especially for medical or pharmaceutical use; packaging element thus treated