ИСТИНА

The crosshole seismic testing method has a great potential. In the course of observations a dense network of seismic rays is obtained that travel through the region of interest. As a result, the method provides enhanced approaching the object of research. There are two ways of obtaining crosshole sections: migration and crosswell CRP. Basically, the dominated frequency of crosswell seismic data is higher than the dominated frequency of surface seismic data by several times. The imaging derived from the data can indicate the geological structure between wells clearly and can be used for detailing reservoir characterization and residual oil potential seeking. The source and receiver in such a way are close to the interface formation, so that the wavefield of crosshole seismic testing can receive more information and much more complex than of the surface seismics or VSP.