自升式钻井平台插拔桩技术发展现状及趋势

Development Status and Trends of Jack-up Drilling Platform Pile Penetration and Uplift Technology

针对自升式钻井平台在插桩和拔桩过程中面临的土工问题,系统地梳理插桩和拔桩涉及的关键技术。分析插桩过程中的土工试验技术、土体破坏机理、上硬下软地层承载力和桩脚滑移问题;阐述拔桩过程中的拔桩阻力计算方法和减小拔桩阻力方法的研究进展情况。在此基础上,根据目前面临的新挑战,提出今后自升式钻井平台插拔桩技术研究的重点,并预测其发展趋势。

This paper systematically reviews the key technologies involved in the pile insertion and uplift for the geotechnical problems faced by jack-up drilling platforms.The geotechnical testing technology,soil failure mechanism,bearing capacity of upper hard and lower soft strata,and pile foot sliding issues met in the pile penetration process are analyzed.The research progress of calculation methods for pile pulling resistance and the methods for reducing pile pulling resistance during the pile uplift process are elaborated.On this basis,the focus of future research on the penetration and uplift technology of jack-up dilling platforms is proposed in accordance with the new challenges faced curently,and the developing trend is put forward.