Seismic vibratory acquisition method and apparatus
AssigneeWesternGeco L.L.C.
InventorClaudio Bagaini
Life of this patent
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Abstract
A method and related apparatus are described for generating acoustic signals for use in a vibratory seismic survey, including at least two different sweep signals for the control of at least two different types of vibrators; and matching the phases of the different sweep signals at a transition frequency from one sweep signal to another.
Claims11
A method of generating acoustic signals for use in a vibratory seismic survey, comprising:
- generating at least two different sweep signals for the control of at least two different vibrators;
- using the at least two different sweep signals in a single sweep having a duration longer than the duration of each of the at least two different sweep signals and proportional to the number of vibrators;
- and
- matching the phases of the different sweep signals at a transition frequency from one sweep signal to another.
A method of exploring the earth interior, comprising converting signals into a representation of the earth interior wherein the signals are derived from registering vibratory seismic signals acquired using at least two different sweep signals for the control of at least two different vibrators and matching the phases of the different sweep signals at a transition frequency from one sweep signal to another during combination of the different sweep signals in a longer duration sweep.
Dependencies are inferred from the claim text.