Resources Contact Us Home
Method and apparatus for creating an image of an earth borehole or a well casing

Image Number 4 for United States Patent #5987385.

An acoustic logging tool, useful for creating a circumferential image of an earth borehole or well casing, which includes one or many acoustic transceivers mounted in substantially the same plane, in a drill string sub. The mounting receptacles are located in blocks, flexibly mounted in fixed inserts within the interior of the drill string sub. Each of the transceivers is structured to provide temperature and pressure compensation. The echo signals received by the transceivers are digitized and processed to eliminate extraneous noise created by the ringing of the transducers, by the signals reflected from the material backing the transducer ultrasonic element, and by any other sources inherent to the drilling environment. Digitization and further processing also allows for signal enhancement, thus allowing detection of signals in the presence of substantial noise. Temperature and pressure determinations are used to correct the acoustic velocity of the waves passing through the drilling fluid, "on-the-fly", as the drilling process continues.

  Recently Added Patents
Systems and methods for parameter adaptation
Preparation and its use of derivatization reagent for detecting L-carnitine or D-carnitine
Concentrating photovoltaic system module with actuator control
Techniques for forming a contact to a buried diffusion layer in a semiconductor memory device
Method and system for utilizing Perovskite material for charge storage and as a dielectric
Solid-state image capture device and image capture apparatus
Apparatus for transmitting and receiving data in a wireless communication system and method thereof
  Randomly Featured Patents
Holder for a handheld device
Container for compressed waste material
Spatially associated personal reminder system and method
Vehicle tire and rim combination
Treated oxidizing agent, detergent composition containing a treated oxidizing agent, and methods for producing
Microprocessor including bank-pipelined cache with asynchronous data blocks
Method and system using linear programming for estimating test costs for bayesian diagnostic models
System and method for glazing
Facsimile apparatus and method for use with customer switching system
System for dynamic product summary based on consumer-contributed keywords