1
Paul L Donoho, Mitchell F Peterson, Hughie Ryder, William H Keeling: Seafloor seismic recorder. Chevron Research and Technology Company, W K Turner, M W Carson, February 23, 1993: US05189642 (81 worldwide citation)

A method and apparatus for recording acoustical and seismic signals at the ocean bottom with minimal noise. A seafloor seismic recorder couples geophones to the water bottom, stores the seismic data, and is retrievable. The device is comprised of a chassis, a ballast ring, an electronics control pac ...


2
Bibhas R De, Paul L Donoho, David E Revus, Russell E Boyer: Microwave system for monitoring water content in a petroleum pipeline. Chevron Research Company, Edward J Keeling, February 20, 1990: US04902961 (39 worldwide citation)

A method and apparatus for determining the water content of crude oil in a pipeline is disclosed. The device consists of S-band tarnsmitting and receiving antennas, and X-band transmitting and receiving antennas. These are used to determine the complex dielectric constant of the fluid in a pipeline. ...


3
Raymond A Ergas, Paul L Donoho, John Villasenor: Method for reducing data storage and transmission requirements for seismic data. Chevron U, W K Turner, Zavell, J S Reid, April 28, 1998: US05745392 (33 worldwide citation)

A method for compressing seismic data to reduce data storage and transmission requirements applies wavelet transforms to digitized trace sequential data obtained from plural arrays of multiple acoustic sensors. The wavelet transforms are applied in at least three dimensions, and, in the case of unde ...