Resources Contact Us Home
Sonic well logging for radial profiling

Image Number 16 for United States Patent #6611761.

A method for determining a radial profile of sonic shear velocity of formations surrounding a fluid-containing borehole, including: suspending a logging device in the borehole; transmitting sonic energy from the logging device to establish flexural waves in the formation; receiving sonic energy from the flexural waves and producing, from the received sonic energy, measurement signals at a number of frequencies; determining, at each frequency, the flexural wave velocity in the formation; deriving sonic compressional and shear velocities of the substantially undisturbed formation; deriving sonic compressional velocity of the borehole fluid; and determining the radial profile of sonic shear velocity from the derived compressional and shear velocities of the substantially undisturbed formation, the derived compressional velocity of the borehole fluid, and the flexural wave velocities.

  Recently Added Patents
Adsorptive molded parts and the use thereof
Power supply architecture system designer
Method and apparatus for editing a program on an optical disc
Electrical event detection device and method of detecting and classifying electrical power usage
System and method for providing an extended platform for an operating system
Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof
Air filter
  Randomly Featured Patents
Cyclone dust collecting apparatus for vacuum cleaner
Portable computerized data communication device
Radar systems
Two-piece slit valve door with molded-in-place seal for a vacuum processing system
Locking security container
Wiper blade
Method for making semiconductor structure
Method for operating a drive train
Device for recording an information signal and a related auxiliary signal
Integrated circuit pad structure with high temperature heating element and method therefor