Theory and experimentation of the charge sizes in seismic-sources for seismic exploration
Shao Zhi-gang · Progress in geophysics · 2003
Dynamite has been main seismic-sources with having good pulse characteristic and high-energy for a long time. As far as dynamite itself, the selection of charge size and well depth has the much effect on excitation energy and frequency in the seismic-prospecting. For this object, the paper discusses the problem from the angle of doing-work mechanism of dynamite explosion by using the theory of dynamite explosion. Theoretical analyses and field experiments show that the selection of most appropriate charge high-energy dynamite and well depth can both improve the dynamite work capability and enhance the excitation energy, therefore beneficial to generating high-frequency soure wavelet with relatively high energy and to directing field-seismic gathering and to minimizing economic expenditure.