Abstract: In light of the applied defects of subjective and objective weight assignment methods of the appraisal approaches for oil-gas field development, the TOPSIS method to comprehensively evaluate the development scheme of oil-gas field is presented. On the basis of the theory and practice of oil-gas field development, a mathematical model by combing with the dynamic indices and the economic indices is developed, by which the comprehensive optimization of oil-gas field development scheme can be made. Taking nine development schemes of a gas field as examples, the ordering results of each development scheme are obtained and compared with those from fuzzy decision and principal element analysis. And then the systematic clustering method is used to verify the conclusions drawn from these three methods. It is indicated that the TOPSIS method has an advantage over the others in optimization of development schemes.

Key words: development scheme, optimization, method