The Research Of Automatic Extraction Method For Seismic Fracture

Fault research is now an important part of hydrocarbon accumulation research.The fracture model can provide target geological data for reservoir research and reservoir modeling.The conventional fracture is explained manually by the interpreter on the vertical and horizontal slices of the 3D seismic data.The method has a long period,is difficult and subjective,and the interpretation result largely depends on the personnel experience and related geological knowledge information.The ant colony algorithm is a bionic evolution algorithm proposed by the Italian scholars M.Dorigo,V.Maniezzo et al.in the early 1990 s by simulating the path finding behavior of ant foraging in nature.By studying the behavior of ant foraging,they discovered that the entire ant colony cooperated with a chemical substance called pheromone to form positive feedback,so that ants on multiple paths gradually gathered on the shortest path.Focusing on the main problems of automatic seismic fracture extraction,combined with the research and analysis of ant colony algorithm,the ant colony algorithm is used to extract the fracture automatically.The process flow of this method is discussed and the application results are analyzed.(1)Find the cracks by ant-tracking techniques for the opponent's differential and coherent bodies,the length of the test parameters window,the initial longitudinal,lateral range,the maximum and minimum values of the iteration end criterion,the number of iterations,and the direction of the tracking on the test results.(2)Using the image processing method-binarization to process the ant profile to obtain a thin lined ant profile with only the cracks present.(3)Fracture-separation treatment based on thin line-finding will eventually achieve three-dimensional spatial distribution of seismic fractures.