New application method of land seismic acceleration signals

Abstract

The invention provides a new application method of land seismic acceleration signals. The new application method of land seismic acceleration signals includes the steps: 1) acquiring acceleration to perform forward simulation on seismic records, estimating acceleration signal acquisition coverage frequency, and collecting seismic acceleration signals; 2) compacting and eliminating high frequency noise; and 3) performing acceleration seismic signal imaging, and applying the data after compacting processing of high frequency noise to a seismic data processing technology to complete accelerationseismic data imaging processing. The new application method of land seismic acceleration signals effectively improves the imaging precision of seismic prospecting, has the advantages of high fidelityand high resolution for seismic signals, high frequency band width, and high response sensitivity to change of physical property of a medium, and is an effective method for improving seismic prospecting accuracy on the land.

Description

technical field [0001] The invention relates to the technical field of application of exploration geophysical signals, in particular to a new method for application of land seismic acceleration signals. Background technique [0002] In oil and gas exploration, geological exploration targets are becoming more and more complex, and the requirements for seismic exploration accuracy are also getting higher and higher. In the eastern Bohai Bay Oilfield, the requirement for stratigraphic resolution at a depth of 3-5km is reduced from 10-15m to 5-10m, and the requirements for exploration accuracy are increased. It does not mean that the exploration technology has been improved accordingly. In fact, the current geophones used in land seismic exploration are mainly conventional dynamic geophones, and the received seismic waves are velocity-type signals. The frequency of this seismic signal can only reach 100 -120Hz, the relatively narrow frequency band limits the ability to distingui...

AI Technical Summary

Problems solved by technology

However, due to insufficient understanding of the acceleration signal, the application effect of the acceleration detector has not been widely recognized. In 2013, Wei, J D and others questioned MEMS and land-use piezoelectric acceleration detectors, and believed that MEMS, land-use piezoelectric, optical fiber The geophone is an acceleration type geophone, and the conventional moving coil geophone is a velocity type geophone. The two types of geophones should be transferred to the same domain for comparison. Hons, M.S, etc. also have similar views (Hons, M.S. et al., 2008;) , and draw the conclusion that the receiving effect of MEMS is similar to that of the conventional moving coil detector, and the acceleration detector cannot widen the frequency band

[0003] Resolution and imaging accuracy are the key issues to be solved in the development of land seismic exploration, especially the vertica

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