Multi-source with inline offset and method
AssigneeCgg Services SAS
InventorShuo Ji
Life of this patent
Estimating the term…
Abstract
A multi-source for generating seismic waves includes plural source arrays, each source array being configured to generate seismic waves in water, and each source array being configured to be attached to a same towing vessel and plural umbilicals, each connecting a corresponding source array to the towing vessel. Each umbilical has a different length from the other umbilicals of the plural umbilicals when the plural source arrays are deployed in water so that an inline offset increment DX between any two adjacent source arrays, along an inline direction, is non-zero.
Claims12
A multi-source for generating seismic waves, the multi-source comprising:
- plural source arrays, each source array being configured to generate seismic waves in water, and each source array being configured to be attached to a same towing vessel;
- and
- plural umbilicals, each connecting a corresponding source array to the towing vessel,
- wherein each umbilical has a different length from the other umbilicals of the plural umbilicals when the plural source arrays are deployed in water so that an inline offset increment DX between any two adjacent source arrays, along an inline direction, is constant and given by DX=ISI/n, where ISI is an inline shot spacing and n is the number of source arrays of the multi-source.
A multi-source for generating seismic waves, the multi-source comprising:
- plural source arrays, each source array being configured to generate seismic waves in water, and each source array being configured to be attached to a same towing vessel;
- and
- plural umbilicals, each connecting a corresponding source array to the towing vessel,
- wherein each umbilical has a different length from the other umbilicals of the plural umbilicals when the plural source arrays are deployed in water so that an inline offset increment DX between any two adjacent source arrays, along an inline direction, varies no more than 10% around a value of ISI/n, where ISI is the inline shot spacing and n is the number of source arrays of the multi-source.
Dependencies are inferred from the claim text.