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US 2010/0149912 A1Published application
System and method for reducing signature variation of seismic sources
OwnerLuren Yang, Nicolae Moldoveanuinventors
Life of this patent
Estimating the term…
Abstract
A technique facilitates the reduction of seismic source signature variation during a seismic survey. The technique involves estimating an azimuth angle and/or a departure angle for one or more seismic source elements. The angles are used to determine adjustments, such as seismic source depth adjustments, able to reduce seismic source signature variation. The adjustments can be made prior to firing the one or more seismic source elements.
Claims22
A method of reducing signature variation of seismic sources, comprising:
- estimating an azimuth angle and a departure angle for a plurality of seismic source elements;
- determining a firing time for each seismic source element;
- using the departure angle to determine a depth adjustment for each seismic source to reduce signature variation;
- and
- adjusting the depth of at least one seismic source element.
2 more elements
A method, comprising:
- deploying a seismic source element and a receiver in a marine seismic survey area;
- and
- adjusting the depth of the seismic source element to compensate the variation of an azimuth angle and a departure angle to improve data collection during a seismic survey.
A system, comprising:
- a seismic survey array having at least one seismic source element;
- a mechanism to adjust the depth of the at least one source element;
- and
- a control system operating to determine a depth value for the source element to reduce seismic source signature variations, the control system determining the depth value based on at least one of the azimuth and the departure angles relative to the seismic source element.
1 more element
Dependencies are inferred from the claim text.