摘要
自升式钻井平台桩靴插拔过程会扰动周边土体,使邻近平台桩靴基础的承载性能受到不利影响。基于弹性理论,求解桩靴脚印周边土体卸荷程度与影响范围,结合模型试验,揭示距插拔位置不同距离/直径(L/D)条件下土体强度的衰减规律;利用CEL大变形和桩靴脚印拟静力计算方法,分析某油田的自升式钻井平台桩靴插拔过程,揭示桩靴插拔对周边土体应力、邻近平台变形和桩靴承载力的影响规律。
The spudcan penetration and extraction process of jack-up drilling platform disturbs the surrounding soil,which adversely affects the bearing performance of the spudcan foundations of the adjacent platform.Based on the elastic theory,the unloading degree and influence range of the soil around the spudcan footprint are solved.Combined with the model test,the soil strength attenuation law under different L/D conditions from the penetration and extraction position is revealed.The spducan penetration and extraction process of the jack-up drilling platform is analyzed by the CEL and the quasi-static calculation method.The influence law of spducan penetration and extraction on the surrounding soil stress,the deformation and the spudcan bearing capacity of the adjacent platform is revealed.
作者
张霖
高建新
ZHANG Lin;GAO Jianxin(CNOOC Energy Technology&Service-Oil Production Services Co.,Tianjin 300452,China)
出处
《天津科技》
2024年第6期27-32,36,共7页
Tianjin Science & Technology
关键词
桩靴
桩靴插拔
桩靴承载力
土体扰动
桩靴脚印
CEL计算方法
spudcan
spudcan penetration and extraction
spudcan bearing capacity
soil disturbance
spudcan footprint
CEL
calculation method
