Research on stratigraphic correlation method based on dynamic time bending distance algorithm

Stratigraphic division and correlation are the basis of oil and gas exploration. With the increasing degree of oilfield encryption, the traditional artificial comparison method is difficult to meet the actual needs of oilfield development, and the comparison method of different people is also subjective and different problems, it is difficult to form a more scientific quantitative method. In this paper, the dynamic time-bending distance algorithm of curve similarity algorithm is used for stratigraphic correlation, and two constraint methods based on beam constraint and parallelogram constraint are used to improve the dynamic time-bending distance algorithm. The application of dynamic time-bending distance algorithm in formation correlation is verified by using the real logging data of Nan8 area of Daqing Oilfield. The experimental results show that the dynamic time-bending distance algorithm improves the efficiency of formation correlation and achieves a good formation correlation effect on the real logging curve.