Amoco Corporation

The Standard Oil Company

Christopher Crowe

Ralph L Cordell

Seun K Kahng

Leon A Thomsen

Carl H Sondergeld

Kenneth E Hanson

Albert L Frisillo

The multicomponent transducer of the present invention comprises a housing interior surfaces forming an enclosed cavity and a single inertial mass immersed in a magnetic fluid contained therein. The inertial mass is levitated in the magnetic fluid by means of ferrohydrodynamic forces. The housing cavity and the inertial mass are generally spherical in shape such that the inertial mass is substantially unconstrained with respect to the directions of motion to which it is responsive. The multicomponent transducer also includes a motion sensing system for sensing selected components of motion of the inertial mass and for generating signals representative of the magnitude and periodicity of the relative motion of the inertial mass with respect to the housing along one or more separate axes. The multicomponent transducer of the present invention has amplitude and phase responses similar to those of conventional transducers.

Multicomponent transducer

The multicomponent transducer of the present invention comprises a housing having interior surfaces forming an enclosed cavity and a single inertial mass immersed in a magnetic fluid contained therein. The inertial mass is levitated in the magnetic fluid by means of ferrohydrodynamic forces. The housing cavity and the inertial mass are generally spherical in shape such that the inertial mass is substantially unconstrained with respect to the directions of motion to which it is responsive. The multicomponent transducer also includes motion sensing means for sensing selected components of motion of the inertial mass and for generating signals representative of the magnitude and periodicity of the relative motion of the inertial mass with respect to the housing along one or more separate axes. The multicomponent transducer of the present invention has amplitude and phase responses similar to those of conventional transducers.

The present invention relates to a method for identifying and separating the effects of elastic and anelastic formation properties in a seismic signal representative of the earth's response to seismic energy imparted therein. The seismic signal is decomposed into a measure of the absorptive contrast and impedance contrast across reflecting boundaries in the earth's subterranean formations. The resulting measures of impedance contrast can be used to obtain a measure of the earth's elastic properties. The resulting measures of the absorptive contrast can be used to obtain measures of the earth's anelastic properties.

Growing community of inventors

Tulsa, OK, United States of America

Christopher Crowe