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
Group control method for machine type communication and mobile communication system using the method
Making transparent capacitor with multi-layer grid
Non-aqueous solution process for the preparation of cross-linked polymers
Printing apparatus
Method and apparatus for determining the altitude of a mobile device
Relative pose estimation of non-overlapping cameras using the motion of subjects in the camera fields of view
Polyolefin and composition for pipe systems and sheets
  Randomly Featured Patents
Writing instrument
Mountable product sensor and display stand
Dual-filled twin bag, a package and a method for forming a package for administering a solution
Redirection of cellular immunity by protein tyrosine kinase chimeras
Substituted 2,3-alkylene di (oxy) benzamides and derivatives
Central tower building with ground constructed hoisted and supported floors
Recessed lamp
Pickup truck stake arrangement
Herbicidal composition
Safety door