Shot computing method for shot points

Abstract

The invention provides a shot computing method for shot points, and relates to offshore oil seismic exploration technologies; the problem that the current shot algorithm for shot points is low in accuracy and stability is solved. The method comprises: pre-treating DGPS data to obtain normal DGPS observation data; filtering the observation data, and computing the position of a DGPS node; transmitting the coordinate of the DGPS node to a ship reference point and the shot point; and computing the shot point according to the coordinate of the DGPS node. The technical scheme provided by the invention is applicable to marine seismic exploration, achieves shot point computation with strong adaptability, high accuracy and good stability.

Description

technical field [0001] The present invention relates to the technical field of offshore petroleum seismic exploration, more particularly, to a method for calculating shot point firing in offshore streamer seismic exploration, which is used for the calculation of firing shots in marine exploration. Background technique [0002] In marine seismic exploration, towline exploration seismic data acquisition is a commonly used method. The geophysical exploration ship fires shots in real time along the front drawn survey line, and the geophone collects the reflected seismic data in real time. The shot point firing algorithm needs to have as high accuracy as possible. That is, the distance of the actual shot point along the survey line is as close as possible to the front shot point, and the closer it is, the higher the reflection accuracy is. The shot accuracy directly affects the construction accuracy and acquisition accuracy. [0003] In bad sea conditions, such as various unexpec...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a calculation method for firing a shot at a shot point, which solves the problem of low accuracy and stability of the current shot point firing algorithm

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