Research On Kriging Algorithm In Complex Bodies

Kriging method has been relatively mature after a long time development.But how to make use it to better realize the complicated geological attribute interpolation,has always been the focus of the seismic exploration experts,so according to the characteristics of the complex geologic body to improve the efficiency and effectiveness has been the hot topics in the study of the earth physicists and mathematicians.In this paper,according to the characteristics of complex geological body,based on Delaunay subdivision technology,the simple Kriging interpolation method is improved.On the basis of existing sample points,we increase the density of sample points by triangle internal segmentation and interpolation methods,improved the Kriging interpolation method and improved the efficiency and effectiveness of complex geological body attribute interpolation.Four parts are shown below.(1)We analyzed Delaunay subdivision algorithm,the theory and derivation of ordinary kriging method.(2)Combining with the characteristics of complex geologic faults,we realize the Kriging interpolation algorithm based on triangle.And the process is presented,then we complete the complex geological horizon and the fault attribute interpolation.(3)We realize the Kriging interpolation algorithm based on tetrahedron.And the process is presented,then we complete the horizon and the fault attribute interpolation.(4)We use the algorithms and some practical seismic data to complete the actual data of complex geological body attribute interpolation,and the interpolation effect is better,and the correctness and feasibility of the algorithm is verified.