Abstract:On the premise of satisfying the needs of geological tasks,the paper proposes a method to determine the size and aspect ratio of patches for a more efficient and convenient 3D geometry design.With the center of the patch as the origin,and the spatial coordinates (x,y) as the independent variables,a rectangular coordinate system is constructed.With the center of the patch to the designed maximum offset as the radius,a circle is drawn.Receivers in the circle are considered effective,and those outside the circle are considered invalid.Taking the effective information and invalid information and their inter-relation information as dependent variables,the functional relations of the effective information and invalid information with the spatial coordinate position are calculated.The spacial coordinates determine the length and width of a 3D patch,and their proportion (the aspect ratio).At the same time,a template and a table for the horizontal and vertical parameter selection of the patch are generated.This method is convenient and flexible,and can be used for a reference in the 3D survey design.
张华, 王梅生, 李康虎, 宁宏晓, 韩志雄, 辜勇. 确定排列片横纵比的方法——85%法则再分析[J]. 石油地球物理勘探, 2019, 54(5): 947-953.
ZHANG Hua, WANG Meisheng, LI Kanghu, NING Hongxiao, HAN Zhi-xiong, GU Yong. A method for determining the aspect ratio of patch: reanalysis of 85% rule. Oil Geophysical Prospecting, 2019, 54(5): 947-953.
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