Resources Contact Us Home
Sonic well logging for radial profiling

Image Number 4 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
Inspection tool for top guides of a boiling water reactor
System and method for controlling device location determination
Scanning transmission electron microscope and axial adjustment method thereof
Recording device, recording method, and program
Wind energy system having a connection protection device
Cleaning device, and image forming apparatus, process cartridge, and intermediate transfer unit each including the cleaning device
Verification of computer-executable code generated from a model
  Randomly Featured Patents
Multi-cladding optical fiber, long-period optical fiber grating written therein and writing method thereof
Comminuting tool and comminuting device with such a comminuting tool, as well as a method for determining the state of wear of such a comminuting tool
Stencil frame securing and registering apparatus
Methods and apparatus to conceal portions of a visual object diagram in a process control system
Apparatus and method for locating and repairing a damaged lawn sprinkler head
Thermocouple ceramic bead insulator
Method for the manufacture of sheetlike or weblike material provided with markings becoming apparent in transmitted light
Channel selection type radio transmission apparatus
Microbiologically produced L-phenylalanine-dehydrogenase, process for its recovery and use
Tray table base