三维地震勘探应慎用Flexi面元^(®)法

Bewaring of the Flexi-Bin^(®) method in 3-D seismic survey.

Flexi面元法是一种细分面元的三维地震勘探观测系统方法,主要目的是既节省勘探投入又提高横向分辨率。该方法经实际应用,大多数均未达到预期效果。从Flexi面元(R)法的几种设计方法入手,通过大量的论证分析,研究细分面元三维观测系统的实现过程,总结细分面元方法存在的问题及其应用局限性。分析研究表明,Flexi面元(R)法不能实现既节省勘探投入又提高横向分辨率的目的。

Flexi-Bin(R) method is a 3-D seismic survey method of bin frac-tionation for improving seismic lateral resolution and decreasing the cost of exploration. However, it is few for the method to a-chieve the desired effects in practice. This paper discussed the theory, clarified the problems, and illuminated inadaptability of the Flexi-Bin(R) method through analyzing the design of survey geometry. The studies shows that it is incapable for Flexi-Bin(R) method to improve seismic lateral resolution while decrease the cost of exploration.