Invention Grant
- Patent Title: Node position correction in presence of time distortions
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Application No.: US15124881Application Date: 2015-03-13
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Publication No.: US10054706B2Publication Date: 2018-08-21
- Inventor: Tony Noss
- Applicant: CGG SERVICES SA
- Applicant Address: FR Massy
- Assignee: CGG SERVICES SAS
- Current Assignee: CGG SERVICES SAS
- Current Assignee Address: FR Massy
- Agency: Patent Portfolio Builders PLLC
- International Application: PCT/IB2015/001025 WO 20150313
- International Announcement: WO2015/140644 WO 20150924
- Main IPC: G01V1/38
- IPC: G01V1/38

Abstract:
Seismic data recorded on an ocean bottom node (OBN) is used to determine observed direct arrival times at the OBN from a set of seismic source shots having a time span that is only a portion of an entire span time for a shot line. The observed direct arrival times for each shot in the set of seismic source shots are compared statistically with a plurality of predicted direct arrival times for each shot in the set of seismic source shots to derive a statistical measure of differences across all shots. Each predicted direct arrival time is associated with a unique proposed position of the OBN. The unique proposed position that minimizes the statistical measure of differences between the observed direct arrival times and the predicted direct arrival times is selected for each shot in the set of shots as a corrected OBN position.
Public/Granted literature
- US20170017006A1 NODE POSITION CORRECTION IN PRESENCE OF TIME DISTORTIONS Public/Granted day:2017-01-19
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