Resources Contact Us Home
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
System and method for a driver circuit with a referenced control signal
Piezoelectric device and fabricating method thereof
Dynamic learning method and adaptive normal behavior profile (NBP) architecture for providing fast protection of enterprise applications
Ni-, Co-, and Mn- multi-element doped positive electrode material for lithium battery and its preparation method
Radio communication system, base station apparatus, terminal apparatus, and radio communication method for radio communication system
Vehicle hood
Case for camera
  Randomly Featured Patents
Printing method with camouflage of defective print elements
Document console
Arrangement for projecting images of markers on to a photosensitive surface in a telecine equipment
Lift axle assembly
Side emitting LED and lens
Method for providing calling services during attempt to complete customer call while muting ringing
System and method for providing cellular communication services using a transcoder
Process for preparing color-stable tertiary butyldiethanolamine
Display enhanced testing for concussions and mild traumatic brain injury
Projection exposure system