西南石油大学学报（自然科学版）2016，Vol.38Issue(4)：130-135,6.DOI:10.11885/j.issn.1674-5086.2014.09.03.05
基于空间球对称模型的井底岩石可钻性研究
A Bottomhole Drillability Model in Spherical Symmetric Coordinates
摘要
Abstract
Aiming at bottomhole drillability in complex stress conditions,experimental and theoretical studies were carried out in this paper,including drillability and uniaxial compressive strength tests. A bottomhole drillability model was established in spherical symmetric coordinates,based on the elasticity theory and Drucker-Prager strength criterion. A case was done according to the drillability test data and well logging data from sandstone reservoir in Xujiahe group. The results show that bottomhole drillability increases with the increase of fluid column pressure in wellbore. Bottomhole drillability also increases along the radial direction. This drillability model can well reflect the law of bottomhole drillability and contributes to BHA optimization design.关键词
可钻性/Drucker-Prager强度准则/中间主应力/液柱压力/测井Key words
drillability/drucker-prager strength criterion/intermediate principal stress/fluid column pressure/well logging分类
能源科技引用本文复制引用
石祥超,陶祖文,孟英峰,赵向阳,陶赟..基于空间球对称模型的井底岩石可钻性研究[J].西南石油大学学报（自然科学版）,2016,38(4):130-135,6.基金项目
国家重点基础研究发展计划（973计划）（2010CB226704）；国家自然科学基金（51134004）；“西南石油大学青年科研创新团队”基金（2012XJZT003）。 （）
