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
Dynamic bar oriented user interface
System and method for backup communication over ethernet
Inhibitors of bacterial nitric oxide synthase, and related screening methods
Media identification system with fingerprint database balanced according to search loads
Droplet generation and detection device, and droplet control device
Electric discharge machining hole drilling
Method of reducing acetaldehyde in polyesters, and polyesters therefrom
  Randomly Featured Patents
Method of controlling the growth of microorganisms
Sheet inverting and stacking apparatus
Therapeutic treatment for cardiovascular diseases
Replenishing device and method of detecting failures produced therein
Circuit and method for detecting an amplitude and offset deviation of two sinusoidal signals
Wheelchair storage apparatus
Electrical connector
Method of classifying leukocytes by flow cytometry and reagents used in the method
Ultrasonic system for obtaining ocular measurements