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
Polarization-coupled ferroelectric unipolar junction memory and energy storage device
Semiconductor memory device, method of controlling read preamble signal thereof, and data transmission method
Beaconing and superframe structure for millimeter wave wireless technologies
Lightweight multicast method and apparatus for data distribution service
Compression molding method and reinforced thermoplastic parts molded thereby
Multi-user remote health monitoring system with biometrics support
Method and a system for registering a 3D pre-acquired image coordinates system with a medical positioning system coordinate system and with a 2D image coordinate system
  Randomly Featured Patents
Dual needle injection device
Collapsible hat
Marine oil pollution fire fence
Power splitter and power combiner using N-branch-line-shaped directional couplers
Method of post-processing solid-state imaging device
Deformable under body including deformable frame members for protecting a fuel vapor canister
VHF harmonic impedance tuner
Selector valve, especially a central control valve for a water treatment device
Electrically isolated metal mask programming using a polysilicon fuse
Corrosion-resistant apparatus