Whether it is the cross-well seismic survey or hydraulic fracturing micro-seismic survey,all we need to know is the relatively accurate formation velocity.This paper presents a new method for micro-seismic layer velocity inversion.First,the logging data and geological knowledge are used to establish an initial velocity model,and then the first arrival time of the perforation record is picked up.Because the excitation time of some seismic records is difficult to be determined,the objective function is established by using the time difference between the seismic traces.Finally,the pattern search algorithm is used to find the optimal solution of the objective function.The model trial results and the application of actual data show that the method has better results for the layered media model with fewer parameters.The method provides some reference for the fracturing and other technologies in the Bohai Sea.
严皓, 李宾, 赵海峰, 唐何兵. 基于模式搜索的微地震速度反演——以渤海K油田为例[J]. 物探与化探, 2019, 43(5): 1023-1029.
Hao YAN, Bin LI, Hai-Feng ZHAO, He-Bing TANG. Pattern search algorithm for micro-seismic velocity inversion:A case study of K oilfield,Bohai Bay Basin. Geophysical and Geochemical Exploration, 2019, 43(5): 1023-1029.
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