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.

摘要： 通常钻井参数优化被认表达一个确定性优化问题,没有考虑其中的不确定性因素。本文用随机理论和模糊集理论处理钻井机械参数优化问题中的不确定性因素。建立了具有模糊可靠性约束、可靠性约束、模糊约束的钻井参数优化模型,给出了数值求解方法,并计算了工程实例。

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