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简单地说,3D对称采样的标准是:1)炮点间隔位置=接收点间隔位置;2)炮线间隔=接收线间隔;3)最大纵测线炮检距=最大横测线炮检距;4)炮点和接收点的中心排列数据采集;5)所需的炮点组合和检波器组合相等。 把这些标准应用于正交观测系统中可得到(a)正方形形状的十字排列;(b)共接收点道集与共炮点道集相似;(c)横测线方向的地震特征与纵测线方向上的相同。
In simple terms, the criteria for 3D symmetric sampling are: 1) the shot interval position = the shot interval position; 2) the shot interval = the shot interval; 3) the maximum inline shot offset = the maximum shot line offset ; 4) central arrangement of shots and reception points; and 5) the required shot combination and detector combination are equal. The application of these criteria to orthogonal observation systems results in (a) a cross-shaped arrangement of square shapes; (b) the common receiver gathers set are similar to the common shot gathers; (c) the seismic signature in the transverse line direction coincides with the longitudinal line The same direction.