Invention Grant
US08717845B2 Quality-based steering methods and systems for 4D geophysical surveys
有权
基于质量的4D地球物理测量方法和系统
- Patent Title: Quality-based steering methods and systems for 4D geophysical surveys
- Patent Title (中): 基于质量的4D地球物理测量方法和系统
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Application No.: US13216978Application Date: 2011-08-24
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Publication No.: US08717845B2Publication Date: 2014-05-06
- Inventor: Bengt Mikael Boberg , Jon Falkenberg , Anders Goran Mattsson
- Applicant: Bengt Mikael Boberg , Jon Falkenberg , Anders Goran Mattsson
- Applicant Address: NO Oslo
- Assignee: PGS Geophysical AS
- Current Assignee: PGS Geophysical AS
- Current Assignee Address: NO Oslo
- Main IPC: G01V1/38
- IPC: G01V1/38

Abstract:
A survey method includes towing one or more sources and one or more streamers behind a vessel to acquire geophysical survey data. Steering signals are determined for at least one of: the one or more sources, the one or more streamers, and the vessel. The steering signals minimize an error function having parameters that include a measure of a cross-line position error and a measure of data quality. The cross-line position error may be measured as an offset of the sources or the receivers from their desired paths, or in some embodiments as an offset between midpoints for base survey traces and subsequent survey traces. Some embodiments may employ a maximum spatial cross-correlation coefficient between a newly acquired trace and one or more base survey traces as a data quality measure, while others may employ a time shift, a phase rotation, or a normalized root mean square error. Data quality may indicate sensor noise levels.
Public/Granted literature
- US20130051175A1 Quality-Based Steering Methods and Systems for 4D Geophysical Surveys Public/Granted day:2013-02-28
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