Application of Fuzzy Comprehensive Evaluation Method in Well Control Risk Assessment

摘要

In order to quantitatively describe the risk of well control in drilling, the risk factors and weight assignment were evaluated by expert scoring method and analytic hierarchy process (AHP). The evaluation system of first levels of 4 factors, such as geological uncertainty, well control equipment, process operation, personnel quality, etc., is established, and the evaluation system of second levels and multiple factors is established. Evaluation results show that geological uncertainty is caused by a primary factor in the well control risk, the oilfield exploration well control risk status as "great risk". The application results show that the method is feasible for evaluating well control risk.