Comprehensive Safety Evaluation for Drilling Process of Oil Field

To evaluate accurately the drilling status that affect safety of oil well drilling and reduce the occurrence rate of drilling accidents, this paper firstly analyzes the factors which affect the safety of drilling to determine the drilling safety evaluation indexes. Then it adopts analytic hierarchy process to construct a drilling safety evaluation model, and calculates the influence weights of indexes. Afterwards, the paper obtains the influence degree of safety by analyzing all drilling status data comprehensively, and determines their safety levels respectively. The applications show that such a model is able to provide a scientific evaluation on the overall safety performance and reduce accidents.