Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Heating element and its application
Digital rights management (DRM) locker
Active noise canceling system for mechanically cooled germanium radiation detectors
Method and system for locating and monitoring first responders
Fast path for grace-period detection for read-copy update system
Bis [O-(14-benzoylaconine-8-yl)] esters
Resolving interdependencies between heterogeneous artifacts in a software system
  Randomly Featured Patents
Method of mitigating interference in mixed frequency
Sealing glass
Method and apparatus for ram built-in self test (BIST) address generation using bit-wise masking of counters
Thin semiconductor package and method for manufacturing same
Apparatus for rapid cooking of edible pasta
Method and apparatus for providing thermodynamic protection of a driver circuit used in an in-circuit tester
Printing apparatus, and computer readable storage media for storing printing instructions
Process for removing bacterial endotoxin from gram-negative polysaccharides
Chromium picolinate compositions and uses thereof
Heat saver device