摘要
钻井深度的持续增加使钻柱面临的载荷工况越来越严苛。钛合金具有密度小、屈服强度高和弹性模量低等特点,基于井口钻杆抗拉余量设计要求,设计3种钛合金/钢钻杆复合钻柱,即复合钻柱1(Φ101.6 mm钻杆段全段使用钛合金钻杆)、复合钻柱2(Φ101.6 mm钻杆上半段使用钛合金钻杆)和复合钻柱3(Φ101.6 mm钻杆下半段使用钛合金钻杆)。为了探究钛合金/钢钻杆复合钻柱(简称为复合钻柱)的动力学特性,基于Hamiton原理建立复合钻柱的动力学模型,并采用节点迭代法和Newmark-β法对模型进行求解,分析3种复合钻柱的涡动特征、动态应力和振动特性,并与常规钢钻柱进行比较。结果表明:钛合金钻杆的使用可有效减缓钻柱涡动速度、动态应力,其中复合钻柱3的涡动速度、动态应力最小;基于振动特征强度对钻井作业参数进行优化,形成复合钻柱3的钻井作业参数推荐图版并给出合理的施工参数范围。
Continuous increase of drilling depth makes the load condition of drill string more and more severe.Titanium alloy has the characteristics of small density,high yield strength and low elastic modulus.In this study,according to the design requirements of tensile allowance for wellhead drill pipes,three types of composed drill strings with titanium/steel drill pipes were designed,namely composite drill string 1(use titanium drill pipes throughout the entire Φ101.6 mm drill pipe section),composite drill string 2(use titanium drill pipes on the upper part of the Φ101.6 mm drill pipe section) and composite drill string 3(use titanium drill pipes on the lower part of the Φ101.6 mm drill pipe section).In order to explore the dynamic characteristics of the composite drill strings,a dynamic model of the composite drill string based on the Hamiton principle was proposed,using the node iterative method and Newmark-β method to solve the model.The whirl characteristics,dynamic stress and vibration characteristics of the three composite drill strings were analyzed,and compared with conventional steel drill string.The results show that the use of the titanium alloy drill pipe can effectively slow down the whirl velocity and dynamic stress of the drill string,among which the whirl velocity and dynamic stress of composite drill string 3 are the smallest.Based on the vibration characteristic strength,the drilling operation parameters can be optimized,and a recommended drilling operation parameters chart of composite drill string 3 was formed,and a reasonable range of operation parameters was given.
作者
陈锋
宾国成
刘志虎
张建军
郭文婷
吴永清
王文昌
刘强
狄勤丰
CHEN Feng;BIN Guocheng;LIU Zhihu;ZHANG Jianjun;GUO Wenting;WU Yongqing;WANG Wenchang;LIU Qiang;DI Qinfeng(School of Mechatronics Engineering and Automation,Shanghai University,Shanghai 200444,China;Downhole Service Company,CNPC Chuanqing Drilling Engineering Company Limited(CCDC),Chengdu 610213,China;Changqing Branch of China Petroleum Logging Company,Xi̍an 710201,China;Shanghai Institute of Applied Mathematics and Mechanics,School of Mechanics and Engineering Science,Shanghai University,Shanghai 200027,China;State Key Laboratory for Performance and Structural Safety of Petroleum Tubular Goods and Equipment Materials,CNPC Tubular Goods Research Institute,Xi̍an 710077,China)
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2024年第3期75-83,共9页
Journal of China University of Petroleum(Edition of Natural Science)
基金
国家重点研发计划(2021YFB3700804)
国家自然科学基金项目(52374008,52174003)
中国石油科学研究与技术开发项目(2021DJ2703)
陕西省自然科学基金项目(2021JM-607)。
关键词
钛合金钻杆
复合钻柱
超深井
动力学特性
钻井参数
titanium drill pipe
composite drill string
ultra-deep well
dynamic characteristics
drilling operation parameters
