Abstract:The development of three-dimensional seismic acquisition technology featuring wide azimuth and high density requires a great amount of seismic acquisition equipment. Under the condition of limi-ted resources of seismic acquisition equipment or the condition of high seismic receiving cost and low excitation cost,it is suitable to adopt the "using shots rather than traces" seismic acquisition method to transform the observation system in the originally designed seismic acquisition arrays. The precondition for the observation system transformation is that the cross subsets constructed by the two observation systems are the same to ensure consistent bin attributes,achieving the expected prospecting targets. The results from practical applications show that the push-pull observation system and the large-cross observation system can easily construct the equivalent subset and realize the accurate transformation using shots rather than traces. The study of these two observation systems is the basis for the analysis and design of the complex observation system transformation using shots rather than traces.
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