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
Tint block image generation program and tint block image generation device
Power transmission control device for vehicle
Message processing method and apparatus based on the SIP protocol and an IP communication system
Combination immunotherapy for the treatment of cancer
Alleviation of laser-induced damage in optical materials by suppression of transient color centers formation and control of phonon population
Apoptosis inductor extracted from potato, potato foodstuff containing the inductor, and processed product thereof
Organic metal complex and its use in organic electroluminescent device
  Randomly Featured Patents
Alarm clock having an ambient light detector
Metal oxide composition
Suspension polymerized toner treated by starved feed monomer addition process
Sheet molding material
Antenna module
Location-sensitive decryption of an encrypted message
Receiving apparatus and C/N ratio indication method thereof
Lock-up damper disk of a torque converter
Picosecond gated light detector
OCR targeting device