用模糊综合评判法评价井壁的稳定性

针对影响油气井井壁稳定性的因素多、判别难度大等问题,通过对影响井壁稳定性诸因素综合分析的基础上,结合不同油气井工程实践的具体情况,提出了利用多级模糊综合评判法判别油气井稳定性的有效方法,并利用实例对该方法的运用过程进行了较为详细的阐述.该方法增强了井壁稳定性分析预测的科学性和稳定性,该方法可操作性强,克服了以前靠经验判别井壁稳定性的缺陷,为现场施工决策者判断作业井的稳定性提供了一种新的方法.

Use Fuzzy Comprehensive Evaluation Method to Judge Well Sidewall Stability

In allusion to the problems that the factors of affecting oil and gas well sidewall stability are too many and to distinguish it is difficult,by the synthetic analysis to the factors of affecting oil and gas well sidewall stability and incorporating the different oil and gas well engineering practice circumstances,the article bring forward utilizing multistage fuzzy comprehensive evaluation to judge oil and gas well stability,and using the example to expound it detailedly to the methodological handling course.The method enhances the hole stability analytical prediction scientificalness or stabilization and may be used easily,it overcomes the defect depending on experience to judge hole stability,and provides a new means to judge the stability of well in operation for the site operation decision makers.