Reinforcement Priority of Hazardous Reservoirs Based on the Grey Relational-TOPSIS Model

SHEN Huifang

doi:10.3969/j.issn.1004-7328.2025.11.019

Abstract：To address the inaccuracy of traditional methods in evaluating reservoir seismic damage and the difficulty in providing a reliable basis for reservoir risk elimination and reinforcement,a Grey Relational-TOPSIS model research method was proposed.This method aimed to objectively evaluate reservoir seismic damage and determined the reinforcement sequence based on the evaluation results to ensure the reinforcement effect.By understanding the classification of reservoir seismic damage,the Grey Relational-TOPSIS model was constructed,the weights of evaluation indicators were determined,and the closeness of the samples to be evaluated to the ideal sample was calculated.Combined with a case study,the Grey Relational-TOPSIS model was used to evaluate the seismic damage of the reservoir and determine the reinforcement sequence according to its actual situation.The feasibility of the proposed method was verified by comparing the results with expert assessments and checking the degree of consistency.The results showed that the Grey Relational-TOPSIS model accurately evaluated reservoir seismic damage in a quantitative grading manner,formulated a reinforcement sequence consistent with the reservoir's actual conditions,and improved reinforcement effectiveness and efficiency.This research method provides a technical reference for the analysis of reinforcement priority for hazardous reservoirs.