发明名称 |
SEISMIC CLOCK TIMING CORRECTION USING OCEAN ACOUSTIC WAVES |
摘要 |
A method for identifying clock timing discrepancies in a plurality of clocks that are each associated with a seismic receiver, comprises the steps of collecting from at least a pair of receivers a data set corresponding to a selected time period, cross-correlating the data sets between at least one pair of receivers so as to produce cross-correlated data for positive, zero, and negative time lags, comparing the cross-correlated data for the positive and negative time lags to measure a timing asymmetry about the zero-lag time, and, for a receiver pair for which there is a non-zero timing asymmetry, using the asymmetry to identify a timing discrepancy between the clocks associated with that receiver pair. The each data set can be filtered so as to obtain data in a selected frequency range, which may avoid an active shot frequency. The data may be collected in the absence of active seismic shots. |
申请公布号 |
WO2011068922(A2) |
申请公布日期 |
2011.06.09 |
申请号 |
WO2010US58635 |
申请日期 |
2010.12.02 |
申请人 |
SHELL OIL COMPANY;SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.;HATCHELL, PAUL JAMES;MEHTA, KURANG JVALANT |
发明人 |
HATCHELL, PAUL JAMES;MEHTA, KURANG JVALANT |
分类号 |
G01V1/26;G01V1/22;G01V1/38 |
主分类号 |
G01V1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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