Patent ID: 6061298
Filing Date: 2000-05-09
Classification: G01V

Abstract:
A method of processing seismic data collected with a plurality of multi-component detectors comprising:determining orientation angles of a first component of a first multi-component detector with respect to a multiple sources;assigning a receiver orientation angle of the first component based upon said determining the orientation of the first component with respect to the multiple sources by:adjusting the orientation of the orientation angle of the first component with respect to the sources by amounts equal to the difference in angle of a reference line of known orientation and a line between the source and the receiver, wherein a plurality of adjusted orientation angles of the component with respect to the sources is defined,statistically comparing the adjusted orientation angles of the first component with respect to the sources, andassigning a receiver orientation angle to the first component based upon said statistically comparing;rotating traces from the first component based on said assigning a receiver orientation angle, wherein a first set of rotated traces are defined; andassigning a uniform polarity to the first set of rotated traces;rotating traces from a second component based on said assigning a receiver orientation angle, wherein a second set of rotated traces are defined;assigning a uniform polarity to second set of rotated traces;wherein said rotating traces from the first component based on said assigning a receiver orientation angle comprises:multiplying a trace from the first component by the cosine of the orientation angle, wherein a first product is defined,multiplying a trace from the second component of the receiver by the sine of the orientation angle, wherein a second product is defined, andadding the first and the second product, wherein a rotated first trace is defined; and said rotating traces from the second component based on said assigning a receiver orientation angle comprises:multiplying a trace from the first component by the sine of the orientation angle, wherein a third product is defined,multiplying a trace from the second component of the receiver by the cosine of the orientation angle, wherein a fourth product is defined, andsubtracting the third product from the fourth product, wherein a rotated second trace is definedand wherein said assigning a uniform polarity to the rotated set of traces comprises:comparing the polarity of a first trace of the first set of rotated traces at an event to the polarity of a second trace of the first set of rotated traces at the event, andchanging the polarity of the event in the second trace of the first set of rotated traces is different from the polarity of the event in the first trace of the first set of rotated traces.