西安石油大学学报（自然科学版）2024，Vol.39Issue(5)：71-77,84,8.DOI:10.3969/j.issn.1673-064X.2024.05.009
渤中井壁坍塌失稳流固热化耦合模型及应用
Fluid-Solid-Thermal-Chemical Coupling Model for Wellbore Instability of Directional Wells in Central Bohai Sea and Its Application
摘要
Abstract
To study the influence of wellbore inclination angle,azimuth angle,and formation hydration time on the instability zone a-round the wellbore,based on fluid-solid-thermal-chemical coupling and plasticity theory,the distribution pattern of plastic instability zone around the wellbore in shale formation was analyzed using finite element numerical simulation method.The result shows that,direc-tional wells have a higher risk of instability,and the wellbore inclination angle and hydration time of shale formation are important fac-tors affecting the stability of bedding shale formation.When the wellbore inclination angle exceeds 30°,the instability area around the wellbore significantly increases,while the wellbore azimuth angle has no significant effect on the distribution of the final instability area around the wellbore.The research result has engineering guidance significance for wellbore trajectory design in shale formation.关键词
泥页岩/井眼轨迹/井壁坍塌/井壁稳定/多场耦合Key words
shale/wellbore trajectory/wellbore collapse/wellbore stability/multi-field coupling分类
能源科技引用本文复制引用
曹文科,幸雪松,周长所,朱海燕..渤中井壁坍塌失稳流固热化耦合模型及应用[J].西安石油大学学报（自然科学版）,2024,39(5):71-77,84,8.基金项目
国家自然科学基金(51904037) （51904037）
