Abstract:3-D seismic exploration has been basic method for raising overall benefit of development seism.Major 3-D seismic exploration methods are the conventional method and the bin-subdivisible method that was newly used in foreign countries.Conventional 3-D layout takes linear swath,and the CMP lies at the center of bin.Once determined,one conventional 3-D layout results in definite coverage number,relevant signal/noise ratio and certain resolution.Unlike the conventional 3-D layout,bin-subdivisible 3-D layout has the following essential points: •Some very special parameters are used to form unequal bins,in which the common-mid points scatter uniformly. •f-iigh-stacked seismic data and less-stacked high-resolution seismic data can be obtained respectively to meet the requirements of different geological tasks. •Any informations in linear-swath conventional 3-D layout can be retained,and more potential informations are received desirably. •Convenient field operation,goad coupling vVith static correction,less cost of data acquisition,fine offset azimuth design,flexible data processing,adaptation to prestack migration,and so on.