深水钻井送入管柱卡瓦挤毁载荷模型研究

摘要

针对深水钻井中容易发生卡瓦挤毁送入管柱的问题,详细分析了管柱-卡瓦之间相互作用的机理,利用厚壁圆筒理论等相关力学理论建立了计算卡瓦挤毁载荷的新模型,并进行了模型验证和实例计算,结果表明本文建立的新模型可作为深水钻井送入管柱设计校核的依据,所计算出的送入管柱的作业窗口可以为现场应急事故处理提供指导,从而保障深水钻井作业的安全.%In view of the problem of slip crushing landing string,this paper has analyzed the interaction mechanism between the drill pipe and slip in detail, established a new model of landing string's slip crushing loads by thick-wall cylinder theory and related mechanical theory,also tested the model and performed a case calculation. The results show that the new model can be used as a design basis for landing string used in deep water drilling. The calculated operating window of landing string can provide a guidance for on-site emergency incident handling, thus protecting the safety of deep water drilling operation.