Land seismic sensor spread with adjacent multicomponent seismic sensor pairs on average at least twenty meters apart
AssigneeWesternGeco L.L.C.
InventorsNihed El Allouche, Ali Ozbek
Life of this patent
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Abstract
A system and method for multicomponent noise attenuation of a seismic wavefield is provided. Embodiments may include receiving, at one or more computing devices, seismic data associated with a seismic wavefield over at least one channel of a plurality of channels from one or more seismic sensor stations. Embodiments may further include identifying a noise component on the at least one channel of the plurality of channels and attenuating the noise component on the at least one channel of the plurality of channels based upon, at least in part, the seismic data received from the one or more seismic sensor stations.
Claims19
A seismic survey spread, comprising:
- a plurality of multicomponent seismic sensors proximate to earth surface, each of the multicomponent seismic sensors being capable of measuring rotation, wherein the spacing between each adjacent multicomponent seismic sensor pair is at least twenty meters, wherein the plurality of multicomponent seismic sensors is configured to acquire seismic data associated with a seismic wavefield, wherein at least one processor of a computing device is configured to:
- receive the seismic data over a plurality of channels from the plurality of multicomponent seismic sensors;
- derive a first channel of the plurality of channels from a vertical translational component of the seismic wavefield and a second channel of the plurality of channels from a horizontal translational component of the seismic wavefield;
- identify a noise component on the first channel or second channel by modeling the seismic wavefield as a sum of one or more basis functions and determining an optimum wavenumber and an amplitude from one or more of a multichannel cost function and a single channel cost function;
- attenuate the noise component on the the first channel or second channel based upon, at least in part, the seismic data.
A system comprising a computing device having at least one processor configured to receive seismic data associated with a seismic wavefield over at least one channel of a plurality of channels from one or more seismic sensor stations, wherein the one or more seismic sensor stations are disposed relative to a surface with an distance of at least twenty meters between each of the adjacent one or more seismic sensor stations, the at least one processor further configured to identify a noise component on the at least one channel of the plurality of channels by modeling the seismic wavefield as a sum of one or more basis functions and determining an optimum wavenumber and an amplitude from one or more of a multichannel cost function and a single channel cost function, and the at least one processor further configured to attenuate the noise component on the at least one channel of the plurality of channels based upon, at least in part, the seismic data received from the one or more seismic sensor stations.
A method for multicomponent noise attenuation of a seismic wavefield comprising:
- receiving, at one or more computing devices, seismic data associated with a seismic wavefield over at least one channel of a plurality of channels from one or more seismic sensor stations, wherein the one or more seismic sensor stations are disposed relative to a surface with an distance of at least twenty meters between each of the adjacent one or more seismic sensor stations;
- identifying a noise component on the at least one channel of the plurality of channels by modeling the seismic wavefield as a sum of one or more basis functions and determining an optimum wavenumber and an amplitude from one or more of a multichannel cost function and a single channel cost function;
- and
- attenuating the noise component on the at least one channel of the plurality of channels based upon, at least in part, the seismic data received from the one or more seismic sensor stations.
A system comprising a computing device having at least one processor configured to receive seismic data associated with a seismic wavefield over at least one channel of a plurality of channels from one or more seismic sensor stations, wherein the one or more seismic sensor stations are disposed relative to a surface with an distance of at least twenty meters between each of the one or more adjacent seismic sensor stations, the at least one processor further configured to identify a noise component on the at least one channel of the plurality of channels by modeling the seismic wavefield as a sum of one or more basis functions and deriving a first channel of the plurality of channels from a vertical translational component of the seismic wavefield and a second channel of the plurality of channels from a horizontal translational component of the seismic wavefield, wherein a relationship between the first and second channel is described by a physical model of the noise component based upon, at least in part, an ellipticity of the noise component, and the at least one processor further configured to attenuate the noise component on the at least one channel of the plurality of channels based upon, at least in part, the seismic data received from the one or more seismic sensor stations.
Dependencies are inferred from the claim text.