摘要
深水钻井时,旋转钻柱与海洋环境力作用下发生振动的隔水管柱易发生接触,造成钻柱与隔水管柱的碰撞或者摩擦。为了解隔水管柱与钻柱间的运动状态,减轻两者间碰摩,保证作业安全性,提出了一种模拟深水隔水管柱-钻柱组成的“筒中筒”耦合系统模型,通过分析二者间的位移与接触力,实现海洋深水钻井作业时隔水管柱与钻柱的耦合动力学模拟的建立。模拟结果表明,考虑隔水管柱与钻柱接触的情况下,海流作用和涡激作用对钻柱的动力学特征具有较大影响;海流速度增加,隔水管柱弯曲程度变大,隔水管柱的振动特征会限制钻柱运动;井口转速增加对钻柱的涡动特征影响小,但会增大钻柱与隔水管柱内壁的接触力,增大钻柱与隔水管柱的失效风险。该理论为海洋深水钻井摩阻分析提供了新的借鉴。
During deep water drilling,the drill string rotates and cuts rocks under the driving of top drive.The riser string will vibrate under the influence of marine environment,and the contact relationship between the riser string and the drill string is very complex.It is difficult to study the vibration characteristics of riser and drill string in the deep water drilling,for the understanding of complex contact relationship between riser and drill string is challenging.To address this issue,this paper proposes a model of“tube-in-tube”coupled system that encompasses both the riser in ultra-deep water and the drill string in ultra-deep well,taking the contact and collision into account.This model is used to simulate the coupled vibration of the riser in ultra-deep water and the drill string during deep water drilling.The simulation results show that the vibration characteristics of riser and drill string obtained by considering the coupling effect.Notably,the marine environmental parameters have a significant impact on the drill string's dynamics:under high ocean current velocity,the riser string in ultra-deep water experiences significant bending,which affects the movement of the drill string.Additionally,the rotation speed of drill string has minimal influence on the whirling characteristics near wellhead.However,increasing the rotational speed leads to rubimpact between the drill string and the inner wall of the riser string,increasing the failure risk of drill string and riser string.
作者
狄勤丰
骆大坤
秦垦
王文昌
陈锋
Qinfeng;LUO Dakun;QIN Ken;WANG Wenchang;CHEN Feng(Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200072,China;PipeChina Energy Storage Technology Co.,Ltd.,Shanghai 200122,China;School of Mechatronic Engineering and Automation,Shanghai University,Shanghai 200072,China)
出处
《石油钻采工艺》
CAS
北大核心
2024年第1期25-32,共8页
Oil Drilling & Production Technology
基金
国家自然科学基金面上项目“考虑隔水管耦合作用的超深水超深曲井钻柱动力学研究”(编号:52174003),国家自然科学基金石油化工联合基金重点项目“超深井钻柱非线性动力学及动态安全性基础理论研究”(编号:U1663205)。
关键词
深水钻井
钻柱动力学
“筒中筒”耦合结构
隔水管柱-钻柱耦合振动
接触碰撞
deep-water drilling
drill string dynamics
“tube-in-tube”coupling structure
riser string-drill string coupling vibration
rub-impact
作者简介
第一作者:狄勤丰(1963-),1997年毕业于西南石油学院油气井工程专业,现从事石油工程中的力学问题研究工作,教授,博士生导师。通讯地址:(200072)上海市延长路149号189信箱。E-mail:qinfengd@sina.com;通讯作者:秦垦(1991-),2022年毕业于上海大学工程力学专业,现从事地下储气库工程力学方面的研究,博士。通讯地址:(200122)上海市黄浦区会馆街51号国家管网集团储能技术有限公司。E-mail:qinken@pipiechina.com.cn。
