摘要
海底浅层气一般指海床浅地层内聚集的气体,是一种典型的海洋灾害地质类型,施工作业时一旦发生灾害,将对生命财产造成不可估量的损失。本文通过介绍海底浅层气的性质和危害,同时对辽东湾浅层气海域的进行工程物探资料分析,结合浅层气海域地层物性的特点,针对带桩靴的自升式平台在浅层气海域桩的插桩过程中存在的风险,提出了自升式平台分段延时插桩方法。并通过实践,指导中油海6平台在该海域的成功插桩,验证了该方法在浅层气海域插桩的可行性,同时实现了桩靴式自升式平台在该区块作业的零突破,具有一定的指导意义。
The shallow gas is one of the typical marine geological hazard types. Once such a hazard happens, immeasurable loss would be caused to the life property. In the present paper, the characteristics of the nature and harm of shallow gas and the property of formation in the sea areas with shallow gas are introduced, and the engineering geophysical data obtained in the shallow gas area of the Liaodong Bay and the risks probably occurring when jack-up platform with pile shoes piles in the shallow gas areas are analyzed. Based on all these, a segmented de- lay time method is proposed for jack-up platform piling in the shallow gas areas. By using this method, the CPOE6 Platform has piled successfully in the Liaodong Bay, which not only veri- fies the feasibility of the method, but also realizes a zero breakthrough for jack-up platform pil- ing in this block area.
出处
《海岸工程》
2015年第4期41-47,共7页
Coastal Engineering
关键词
自升式平台
分段延时插桩法
浅层气海域
辽东湾
jack-up platform
segmented time delay method
sea area with shallow gas
Liaodong Bay
