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US 9,903,966 B2Granted
Seismic data acquisition
AssigneePGS Geophysical AS
InventorsStian Hegna, Gregg E Parkes
Life of this patent
Estimating the term…
Abstract
A method for seismic data acquisition can include near-continuously recording seismic data received from a number of seismic receivers and triggering a plurality of source elements, based upon time and not based upon position, at a predefined sequence of times relative to a start of a near-continuous recording.
Claims21
A method, comprising:
- triggering, subsequent to beginning a near-continuous recording and at irregular time intervals, a plurality of source elements, based upon time and not based upon position, at a predefined sequence of times relative to a start of the near-continuous recording;
- near-continuously recording seismic data received from a number of seismic receivers from the beginning through the predefined sequence of times;
- and
- organizing, based on a reflectivity of a sea surface during the near-continuous recording, a position of each of the plurality of source elements, and a depth of each of the plurality of source elements, the seismic data into a single near-continuous record including a wavefield presented as if it was emitted from a single point in space and time.
1 more element
A recording system comprising a non-transitory machine-readable medium storing instructions executable by a processing resource to cause the machine to:
- trigger, subsequent to beginning a near-continuous recording, at predefined times relative to a start time of a near-continuous recording, a portion of a plurality of source elements at irregular time intervals;
- near-continuously record results of the triggering received from a number of seismic receivers from the beginning through the predefined times, wherein the results of the triggering comprise a wavefield;
- and
- convert, based on a reflectivity of a sea surface during the near-continuous recording, a position of each of the plurality of source elements, and a depth of each of the plurality of source elements, the results into a near-continuous record including a wavefield presented as if it was emitted from a single point in space and time.
1 more element
A method of generating a geophysical data product, the method comprising:
- obtaining geophysical data by:
- triggering, subsequent to beginning a near-continuous recording and at irregular time intervals, a plurality of source elements, based upon time and not based upon position, at a predefined sequence of times relative to a start of the near-continuous recording;
- near-continuously recording seismic data received from a number of seismic receivers from the beginning through the predefined sequence of times;
- and
- organizing, in a frequency-wavenumber domain and based on a reflectivity of a sea surface during the near-continuous recording, a position of each of the plurality of source elements, and a depth of each of the plurality of source elements, the seismic data into a single near-continuous record including a wavefield presented as if it was emitted from a single point in space and time;
- processing the geophysical data to generate a geophysical data product;
- and
- recording the geophysical data product on a non-transitory machine-readable medium.
5 more elements
Dependencies are inferred from the claim text.