Optimizing shooting parameters in high-resolution seismic exploration.
Cnpc Jidong · Shiyou diqiu wuli kantan · 2009
There is wide application of high-resolution seismic exploration to oil/gas exploration and development in Jidong Oilfield. In order to further improve the seismic data resolution in the region, the paper analyzed the optimization of shooting parameters in seismic data acquisition. It is considered by experiments that in aspect of well-depth selection, it should follow the principle that the optimum shooting well-depth should be one fourth of seismic wavelength from top interface of bed with high velocity, the loss of high-frequency components in different degree will be occurred if too deep for shooting well depth, which is unbeneficial to high-resolution seismic exploration; in aspect of charge size selection, it is appropriate to use 2kg charge size for consistent with the practical situation of higher S/N ratio in the region, which is benefit to broaden the frequency band of raw data, and appropriately increasing the charge size is desirable if higher requirement of deep data is put forward.