厚壁井筒井眼稳定性模型与分析  

MODEL AND STABILITY STUDY ABOUT THICK CYLINDER WELLBORE

作　　者：李钦道[1] 张娟[1] 鄢荣[1] 戴强[1] 

机构地区：[1]川庆钻探工程有限公司钻采工程技术研究院

出　　处：《钻采工艺》2011年第5期6-9,共4页Drilling & Production Technology

摘　　要：井壁稳定性情况是钻井、完井和开采都十分关注的一个问题,长期以来人们对这个问题进行了大量研究,也提出了一些判断分析方法,文中介绍了一种井壁稳定性判断方法,这种方法从厚壁地层的受力、变形的基本特点出发,得出了受力变形的计算公式,这个公式可利用钻井、完井、开采的早、中、后期各个阶段的井底压力情况计算井壁变形量,并通过变形量的大小判断井壁稳定性情况。The stability of borehole wall is very important to drilling,completion and production,for a long time,lots of study were done and many analysis methods were proposed. The paper introduced a new evaluation method about borehole wall stability,the equation of borehole wall forcing and deformation was obtained based on the features of formation forcing and deformation. The equation could calculated the distortion of borehole wall by utilizing bottom hole pressure in early,middle and later period while drilling,completion and production,and the borehole wall stability could estimated by using distortion quantity of borehole wall.

关 键 词：厚壁地层 受力变形 井壁稳定性 

分 类 号：TE21[石油与天然气工程—油气井工程]