US 7,436,734 B2 · Shaped high frequency vibratory source

Abstract

The present invention is a method of processing seismic data in which one or more seismic vibrators are activated with one or more pilot signals and vibrator motions are recorded along with seismic data. Vibrator signatures are computed from measured vibrator motions, such as the ground force signal. A desired impulse response is specified from either a measured vibrator motion or from test data or field data from a location near the location from which the seismic data was acquired. A deconvolution filter is computed from the impulse response and the vibrator signature. Alternatively, a single separation and deconvolution filter is derived from the impulse response and from vibrator signatures from multiple vibrators and sweeps. The deconvolution or deconvolution and separation filter is used to process the seismic data. The vibrators are then moved to a new location, and the activation is repeated.

Claims47

Dependent claims

A method of processing seismic data generated by one or more seismic vibrators comprising the steps of

(a) measuring a signal related to the vibrator motion;
(b) computing a vibrator signature for said measured vibrator motion signal;
(c) specifying a desired seismic data processing impulse response, wherein the high and low frequency portions of the amplitude spectrum of said impulse response have amplitude values less than corresponding amplitudes from the high and low frequency portions of the amplitude spectrum of said vibrator signature;
(d) computing a deconvolution filter from the ratio of the desired impulse response and the computed vibrator signature;
(e) processing said seismic data using said deconvolution filter.

2 more elements

Dependencies are inferred from the claim text.

Shaped high frequency vibratory source

Life of this patent

Shaped high frequency vibratory source

Life of this patent

Abstract

Claims47