Abstract：When ocean bottom node (OBN) seismic data are collected, the orientation parameters describing the attitude of the three-component geophone placed on the seabed are usually recorded. The orientation parameters recorded in the field are used for the field reorientation correction of the three-component data by three-component rotation, which can effectively eliminate the crosstalk of the recorded wave field caused by the attitude of the three-component geophone on different components. However, if the orientation parameters of the three-component geophone fail to be recorded in the field, or their accuracy is low, it is necessary to carry out the three-component geophone orientation analysis and correction of the OBN seismic data. Therefore, this paper proposes a three-component geophone reorientation analysis method that comprehensively uses OBN three components to record the first arrival wave and reflected wave energies on different components, and the paper gives the three-component geophone reorientation processing flow and quality control tools for real OBN data. As it comprehensively uses the first arrival wave and reflected wave information, this method is available to the three-component geophone reorientation processing for both deep-water and shallow-water OBN data and has algorithm excellent stability.
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