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US 2011/0299360 A1Published application
Seismic array with spaced sources having variable pressure
OwnerRoy Malcolm Lansley, Madjid Berraki +1inventors
InventorsRoy Malcolm Lansley, Madjid Berraki, Michel Marc Maurice Gros
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Abstract
An over/under seismic source system includes a first umbilical to a first gun array at a first depth and a second umbilical at a different air pressure to a second gun array at a second, lower depth. The air pressure to the second, lower gun array is tuned so that the periods of the gun bubbles from the higher and lower gun arrays match in order to improve wavefield separation in subsequent data processing.
Claims12
An over/under seismic source system comprising:
- a. a first gun array at a first depth operating at a first air pressure for generating a first seismic signal;
- and
- b. a second gun array at a second, lower depth operating at a second, different air pressure for generating a second seismic signal.
A seismic system comprising:
- a. a plurality of seismic sensors;
- b. a plurality of gun arrays, at least two of the plurality of gun arrays vertically spaced apart;
- and
- c. a separate umbilical to each of the least two of the plurality of gun arrays, the separate umbilicals carrying air at different pressures.
1 more element
Dependencies are inferred from the claim text.