关键词: 钻井参数优化, 模糊集理论, 模糊可靠性约束, 可靠性约束, 模糊约束, 优化模型

Abstract: Usually, drilling optimization problems are solved with a deterministic mathematical model in which indeterminate factors that may affect drilling performance are not taken into consideration.In this paper, those indeterminate factors are put into the model on the basis of stochastic theory and fuzzy mathematics.The drilling optimization model is formulated with fuzzy reliability constraint, reliability restraint and fuzzy constraint.Numerical example indicates the reasonableness of the model.