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
Reflective mask blank and method of manufacturing a reflective mask
Resonant conversion system with over-current protection processes
Identifying users of remote sessions
Autonomous downlink code selection for femto cells
Display apparatus, a method for a display control, and program
Enhanced claims damage estimation using aggregate display
Collating device, collating method, and program
  Randomly Featured Patents
Battery, electrical equipment, and a powering method implementing means for short-circuiting the battery
Commercial tomato strainer attachment
Control circuit for controlling power supplied to an igniter element and igniter system
Apparatus and methods for tendon or ligament repair
Manufacturing apparatus and method for predicting life of a manufacturing apparatus which uses a rotary machine
Integrated system for biological fluid constituent analysis
Golf ball
Thermoplastic resin composition
Fuzzy logic-based surveillance in information technology and business service management systems