Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Oil well acoustic logging tool with baffles forming an acoustic waveguide










Image Number 4 for United States Patent #6868036.

An acoustic logging tool includes external baffle assemblies forming a waveguide structure at the acoustic source. The logging tool is designed for acoustic logging of earth formation surrounding a borehole. The external baffle assemblies form a waveguide structure that is designed to increase signal to noise ratio in an acoustic logging tool using dipole or other acoustic waves. In a preferred embodiment, the acoustic logging tool includes an elongated transmitter module, and a receiver sonde having a linear array of acoustic receivers. The transmitter module includes first and second cylindrical masses spaced apart along the axis by first and second spacers. The first cylindrical mass defines a first circular facing surface and a first cylindrical outer surface. The second cylindrical mass defines a second circular facing surface and a second cylindrical outer surface. A multi-pole acoustic source is fixedly mounted between the first and second circular facing surfaces, and located on the transmitter module axis between the first and second spacers. A first annular baffle assembly surrounding the first cylindrical outer surface has a first annular facing surface co-planar with the first circular facing surface. A second annular baffle assembly surrounding the second cylindrical outer surface has a second annular facing surface co-planar with the second circular facing surface. The annular baffle assemblies form an acoustic waveguide.








 
 
  Recently Added Patents
Onium salt-containing polymer
Enhancing user experiences using aggregated device usage data
Random access point (RAP) formation using intra refreshing technique in video coding
Representing polarized light in computer models
Processor micro-architecture for compute, save or restore multiple registers, devices, systems, methods and processes of manufacture
Apparatus and method for evaluating an activity distribution, and irradiation system
Power supply system for motor vehicle
  Randomly Featured Patents
Credit card relationship derivation (AcctID) from historic data
Automatic payment device and method for recognizing coins
Light guide panel usable with backlight unit, backlight unit employing the same, and manufacturing method thereof
Non-carcinogenic asphalts and asphalt blending stocks
System for fabricating preforms in machines for glass container production
Illuminated interconnectable sign module
Gravity-fed low pressure cryogenic liquid delivery system
Sealing arrangement
Phase cancellation in a multi-output distribution amplifier at crossover frequency
Method of forming substrate