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
ASICs having programmable bypass of design faults
Clusterin antisense therapy for treatment of cancer
Digital broadcasting system and method of processing data in digital broadcasting system
Real-image zoom viewfinder and imaging apparatus
Enhancement of semiconducting photovoltaic absorbers by the addition of alkali salts through solution coating techniques
Method for driving electrophoretic display device, electrophoretic display device, and electronic device
Image processing apparatus, image processing method, and program to create a composite image from color image data and monochrome image data
  Randomly Featured Patents
Computer network file synchronization system and method
Sheet supplying device and image forming apparatus incorporating same
Apparatus and method for a bio-conditioning germicidal dryer
Insecticidal compounds
Abrasive sheet holder
Method of enhancing color in a tea-based foodstuff
Orthopedic bandage and method of making same
Test and measurement system
Efficient track destage in secondary storage
Packet network interface