Resources Contact Us Home
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
Pet carrier
Method and system for the geolocation of a radio beacon in a search and rescue system
2,5-disubstituted piperidine orexin receptor antagonists
Determining phase-specific parameters of a physiological variable
Integrated circuit packaging system with laser hole and method of manufacture thereof
Programmable computer mouse
Multilayered material sheet and process for its preparation
  Randomly Featured Patents
Verbena plant named `Florbenacher`
Flowering-fruiting peach tree
Squeezing caster
Reel for fly fishing
Bi directional paper handling transport
Decoding for generalized orthogonal designs for space-time codes for wireless communication
Exercise stand or similar article
Grooved endoprosthesis
Arrangement for laying rail
Truck cab