Abstract: There are many factors that trigger the well control risk. Therefore, the assessment job about the degree of influence on well control incentives is a basic work that may reduce the well control accident and damage. Analytic
hierarchy process is an effective evaluation method. Based on the review of related references, this paper establishes a three-level evaluation index system of controllable incentives. By using the basic principles of AHP method to build a weight model, the analysis on controllable factors induced ell control risk is done and weight values of each incentive are figured out. It provides exemplary theoretical basis for identification and prevention of controllable
factor induced well control risk, and supplies reference on the well control risk preventing.

Key words: well control, risk, risk evaluation, analytic hierarchy process, weight