MATHEMATICAL MODELS FOR FUZZY COMPREHENSIVE TRAP STRUCTURE EVALUATION IN DIFFERENT PHASE OF EXPLORATION

The process of the evaluation for trap structure is,in essence,a multielement analysis,a mullidecision as well as a fuzzy processing. Elements such as oil-generation,oil-storage,the cap rock and the structural order are considered as the evaluation factors in Sichuan Provine. By quantification of these factors according to the data from seismic stratigraphic interpretation, the fuzzy matrix relevant to the trap as well as its oil prospect could be derived out. Mathematic models of multilevel fuzzy comprehensive evaluation for trap structure in different phase of exploration in H-W area were set up and it would possiblely be a useful tool for oil/gas evaluation in a general sense.