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
Delete notifications for an entire storage device
Recombinant Treponema spp. proteins for use in vaccine, antibodies against said proteins, and diagnostic and therapeutic methods including the same
Nonvolatile memory and method of controlling thereof
Modulation of the Vps10p-domain receptor family for the treatment of mental and behavioural disorders
Captive latch for fluorescent light fixture
Cumulative buffering for surface imaging
Graphene device and method for manufacturing the same
  Randomly Featured Patents
System and method for pricing and allocation of commodities or securities
Interrupt management system having batch mechanism for handling interrupt events
Low voltage input current mirror circuit and method
Image processing circuit and image processing method
Transconductance amplifier having common mode feedback circuit and method of operating the transconductance amplifier
Operable synchronous semiconductor memory device switching between single data rate mode and double data rate mode
Push-button interlock mechanism for an industrial-rated circuit breaker
Paddle wheel boat
Method for updating basic input/output system and method for repairing thereof
Load control apparatus