埕岛海域自升式平台桩靴冲刷贯入影响分析  

Analysis of the Impact of Scour Penetration of Jack-up Platform Pile Boots in Chengdao Sea Area

作　　者：刘多亚 LIU Duoya(Drilling Technology Research Institute,SINOPEC Oilfield Service Shengli Corporation,Dongying,Shandong,257017,China)

机构地区：[1]中石化胜利石油工程有限公司钻井工艺研究院,山东东营257017

出　　处：《海洋石油》2024年第4期96-101,共6页Offshore Oil

摘　　要：自升式平台作为海上油区的重要生产设施,其桩腿周围海床存在冲刷现象,为平台的安全生产带来隐患,且由于地层不同的影响,导致平台在就位作业中存在滑移和穿刺的风险。桩靴贯入的承载力分析是指导自升式平台插桩的关键,目前桩基冲刷深度的研究相对成熟,但海床冲刷对于平台贯入的影响研究较少。根据实际海洋环境地质条件及平台作业数据,针对自升式平台插桩就位难题,建立冲刷条件下桩腿承载力数据分析模型,研究桩靴贯入过程中承载力变化过程,分析影响桩靴承载力的关键参数,发现冲刷深度达2 m及以上时,桩靴发生较大位移并产生安全隐患,从而为自升式平台在不同地质环境条件下插桩稳定提供技术支撑。As an important production facility in offshore oil areas,jack-up platforms have scour phenomena on the seabed around their pile legs,which pose potential danger to the safe production of platforms.Due to the influence of different stratigraphic layers,it leads to risks of slippage and puncture during the in-situ operation of the platform.The bearing capacity analysis of the pile boot penetration is the key to guide the pile insertion in jack-up platforms.At present,research on the scour depth of the pile foundation is relatively mature,but the effect of seabed scour on platform penetration is less studied.According to the actual geological conditions of the marine environment and the platform operation data,for the jack-up platform inserting piles in position,we established a data analysis model of pile leg bearing capacity under scour conditions,studied the change process of bearing capacity during the penetration of pile boots,and analysed the key parameters affecting the bearing capacity of the pile boots,and found that the pile boots would be greatly displaced and create a hidden safety hazard when the scour depth reached 2 m and above.The study research can provide technical guidance for the stability of pile insertion of jack-up platforms under different geological and environmental conditions.This will provide technical support for the stability of pile insertion under different geological conditions.

关 键 词：埕岛油田 平台桩靴 冲刷 贯入分析 

分 类 号：TE95[石油与天然气工程—石油机械设备]