Evaluation For Classified Index Of Oil Block Based On The Method Of Fuzzy Comprehensive Evaluation

In this paper, the fault indicator in Daqing oilfield development technology of hypertonic block block in the reservoir as the main object of study,According to the characteristics of high permeability fault block reservoir,Study and formulate a set of perfect based on fuzzy comprehensive evaluation method of reservoir classification evaluation index system.In the system of AHP and fuzzy comprehensive evaluation method,Application of fuzzy comprehensive evaluation method, the Daqing oil fields off effect of technical indicators of hypertonic block block reservoir in developing acomprehensive evaluation.This paper mainly carries on research from the following several aspects of Daqing oilfield block index hypertonic block development technology in oil reservoir:1.On the systematic study of basic early oilfield water flooding development comprehensive evaluation index system, puts forward the method of Grey Relational Analysis on the index screening, leaving some indexes of relatively large, remove the oil field development evaluation the impact is relatively independent index.2.In this paper, some classification method and evaluation standard in the past, only the evaluation of the evaluation criteria as the expert scoring basis, using the AHP judgment matrix, thus affecting the weight of index.3.The calculation method of the comprehensive evaluation index of oil field, select the field data as much as possible, and wide consultation institute experts in Daqing oilfield exploration and development research ideas and. Using fuzzy mathematics and fuzzy comprehensive evaluation method, the analysis and calculation of the index to evaluate the effect of oilfield development in, so that each index in the evaluation of the effect of oilfield development influence ranking.4.Based on the actual situations in the old oilfield exploitation and reasonable verification, the final analysis and research of a suitable to evaluate the effect of oilfield development evaluation system.In this paper, using gray correlation analysis method on the indexes were screened out, leaving the impact is relatively large index into the evaluation system. Integration of the analytic hierarchy process and fuzzy comprehensive evaluation of two methods,first calculate the weights of indicators, and then proposes a evaluation system fuzzy comprehensive evaluation method of reservoir classification index based on the degree of influence, evaluation of the effect of oilfield development are sorted, find the maximum influencing factors. The Daqing oilfield is a fault block is verified by the simulation, results show that the system is feasible and effective.