公开(公告)号：US20110010098A1

公开(公告)日：2011-01-13

申请号：US12919410

申请日：2009-02-24

Applicant: Yi Zhan ,  Bo Zhao ,  Xixiang Zhou

Inventor： Yi Zhan ,  Bo Zhao ,  Xixiang Zhou

IPC: G01V1/28 ,  G06F19/00 ,  G01V1/32

CPC classification number: G01V1/28 ,  G06T11/206

Abstract: A method of pre-stack two-dimension-like transformation of three-dimensional seismic record is accomplished by the following steps: acquiring 3D seismic data, and arranging them according to a shot gather; calculating the offsets of all the receiver points from the first receiver line of the first shot; making a straight line (L2′) which connects the shot point (S) and the receiver point (R1) of the smallest offset as the transformed coordinate axis, and making the shot point (S) as the center, drawing circles whose radii are the offsets (offseti) of each receiver point, then rotating each receiver point to the straight line (L2′), thereby accomplishing the two-dimension-like transformation of all the receiver lines of the shot, and getting three-dimensional seismic data graph with high precision; and then making the processing of the noise elimination and static correction on the three-dimensional seismic record using conventional technique.

Abstract translation: 通过以下步骤实现三维地震记录的叠前二维转换的方法：获取三维地震数据，并根据射击聚集进行排列; 计算来自第一射击的第一接收器线的所有接收器点的偏移量; 将作为变形坐标轴的最小偏移量的拍摄点（S）和接收点（R1）连接成直线（L2'），使拍摄点（S）为中心，画出半径为 每个接收器点的偏移量（offseti），然后将每个接收器点旋转到直线（L2'），从而完成镜头的所有接收器线的二维样变换，并获得三维地震数据图 精度高; 然后利用传统技术对三维地震记录进行噪声消除和静态校正处理。

公开(公告)号：US06501703B2

公开(公告)日：2002-12-31

申请号：US09935761

申请日：2001-08-24

Applicant: Xixiang Zhou ,  Benshan Zhong

Inventor： Xixiang Zhou ,  Benshan Zhong

IPC: G01V100

CPC classification number: G01V1/362 ,  G01V2210/53

Abstract: A shorter spatial wavelength static correction method for exploration seismic data using first arrivals according to the invention includes the steps of: based on a quadratic curve fitting to the first arrivals, which are picked up from seismic wave records of receiver gathers after the field statics, obtaining the difference &Dgr;i,j between the observed first arrival time tij of the receiver point j with respect to the shot point i and the corresponding time value of the fitted quadratic curve; and forming the original matrix &Dgr; having m×n elements &Dgr;i,j, where n is the total number of shot points and m is the total number of receiver points of the line; substituting the elements of each row by the difference between the value of each element and the row average; and substituting the elements of each column by the difference between the value of each element and the column average; repeating the iteration until less than a predetermined error; the sum of the averages of the ith row for all iterations and the sum of the averages of the ith column for all iterations are the static correction value at the ith shot point and the static at the jth receiver point respectively. Said method is applicable to 3-D seismic survey by mean of using a formula of rij={square root over (&Dgr;xij2+&Dgr;yij2)} to transform 3-D seismic data into 2-D data, so that the 3-D seismic data processing is as simple as that of 2-D data.

Abstract translation: 根据本发明的使用初次到达的探测地震数据的较短的空间波长静态校正方法包括以下步骤：基于在场静止之后从接收机集合的地震波记录中拾取的第一到达物体的二次曲线， 获得接收点j的观察到的第一到达时间tij与拍摄点i之间的差DELTAi，j以及拟合二次曲线的对应时间值的差ΔTATA， 并且形成具有m×n个元素DELTAi，j的原始矩阵DELTA，其中n是拍摄点的总数，m是线的接收点总数; 用每个元素的元素代替每个元素的值和行平均值之间的差; 并且通过每个元素的值和列平均值之间的差来代替每列的元素; 重复迭代直到小于预定误差; 所有迭代的第i行的平均值和所有迭代的第i列的平均值之和分别是第i个点处的静态校正值和第j个接收点处的静态。 所述方法适用于三维地震勘测，意思是使用rij = {平方根（DELTAxij2 + DELTAyij2）的公式将3-D地震数据转换为2-D数据，使得3-D地震数据处理为 与2D数据一样简单。