Sedimentary facies analysis based on the spatial information and its application

In this paper,the sedimentary facies are grouped into fan-shaped sedimentary facies,sheet sedimentary facies and banded sedimentary facies based on the plane distribution patterns of sedimentary facies,and different buffer zone methods are used for different types of sedimentary facies.Based on the Walther's law of facies,we have analyzed the wells of known sedimentary facies types.Moreover,we have carried out the automatic analysis of the plane sedimentary facies for the wells with known sedimentary facies types by using computer-aided programming and replacement of manual works.The feasibility of this method was proved by the study of the sedimentary facies of K2 member in the Kongnan area of Dagang Oilfield.