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
Image surveillance system and method of detecting whether object is left behind or taken away
Method for generating multi-antenna signals
Matching a usage history to a new cloud
Frothable aqueous composition for use in a carpet backing composition
Rapid glycopeptide optimization via neoglycosylation
Light emitting device and electronic device
Para-xylylene based microfilm elution devices
  Randomly Featured Patents
Active fiber for optical signal transmission
Mower assembly
Multi-purpose cart and grass collector
Server assembly with multi-funtional fixing frame
Method and apparatus for temperature-compensated energy-absorbing padding
CCD Type solid-state imaging device
Method for manufacturing bead filter using an epoxy resin gel
Intelligent network interface system and method for accelerated protocol processing
Method of manufacturing a BiCMOS semiconductor device