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公开(公告)号：US11125898B2
公开(公告)日：2021-09-21
申请号：US16263118
申请日：2019-01-31
发明人： Qihu Jin , Congwei Liu , Yanpeng Li , Fei Li , Gang Xu , Fangdong Chu
摘要： The embodiments of the present application include acquiring a monitoring region and each observation point therein; partitioning the monitoring region into N layers of grids according to a seismic source positioning accuracy, wherein a side length of a grid cell of an i-th layer of grid is D/2i-1, i=1, . . . N, and D is an initial side length of the grid cell and not more than a double of a distance between the respective observation points; searching all nodes in a first layer of grid to acquire a node satisfying a preset condition therefrom; from i=2, determining and searching nodes satisfying a first preset requirement in the i-th layer of grid, to acquire a node satisfying the preset condition therefrom, until a search in an N-th layer of grid is completed, wherein a node satisfying the preset condition acquired in the N-th layer of grid is a seismic source point location.
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公开(公告)号：US20150168573A1
公开(公告)日：2015-06-18
申请号：US14394100
申请日：2012-12-11
发明人： Gulan Zhang , Ximing Wang , Qinghong Zhang , Yanpeng Li , Jixin Peng , Yufeng Zhao , Jiaojun Rong , Keen Li , Qihu Jin , Xiaoling Guo
IPC分类号： G01V1/30
CPC分类号： G01V1/30 , G01V1/307 , G01V1/42 , G01V2200/14 , G01V2210/60 , G01V2210/63 , G01V2210/677
摘要： Provided is a method for performing layer Q factor inversion by using an amplitude spectrum attribute of a down going wave of vertical seismic profile data in a geophysical exploration data processing technology. In the method, first an F-K (frequency-wave number) method is used to perform wave field separation on VSP original data, so as to obtain a down going wave; a down going wavelet and a monitoring wavelet are selected to undergone Fourier transform to obtain an amplitude spectrum, polynomial fitting is performed on the amplitude spectrum to obtain an equivalent Q, and a formula between the equivalent Q and a layer Q is used to perform inversion, so as to obtain the layer Q. The method has a strong capability of resisting random disturbance, and is capable of removing a difference of triggering wavelet. The algorithm is simple and can greatly save workload; moreover, the layer Q value obtained through inversion has a desirable stability and high precision.
摘要翻译： 提供了一种通过使用地球物理勘探数据处理技术中的垂直地震剖面数据的下行波的振幅谱属性来执行层Q因子反演的方法。 在该方法中，首先使用F-K（频波数）方法对VSP原始数据进行波场分离，以获得下行波; 选择向下小波和监视小波进行傅里叶变换以获得振幅谱，对幅度谱进行多项式拟合以获得等效Q，并且使用等效Q和层Q之间的公式进行反演 ，以获得层Q.该方法具有很强的抵抗随机扰动的能力，能够消除触发小波的差异。 算法简单，可以大大节省工作量; 此外，通过反转获得的层Q值具有期望的稳定性和高精度。
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