钛合金/钢钻杆复合钻柱动力学特性分析与优化设计
Dynamic characteristics analysis and optimization design of drill string composed of titanium/steel drill pipes
陈锋 1宾国成 2刘志虎 1张建军 2郭文婷 3吴永清 2王文昌 4刘强 5狄勤丰4
作者信息
- 1. 上海大学机电工程与自动化学院,上海 200444
- 2. 中国石油集团川庆钻探工程有限公司井下作业公司,四川成都 610213
- 3. 中国石油集团测井有限公司长庆分公司,陕西西安 710201
- 4. 上海大学力学与工程科学学院上海市应用数学和力学研究所,上海 200027
- 5. 石油管材及装备材料服役行为与结构安全国家重点实验室,中国石油集团工程材料研究院有限公司,陕西西安 710077
- 折叠
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.
Abstract
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 sec-tion),composite drill string 2(use titanium drill pipes on the upper part of the Φ101.6 mm drill pipe section)and compos-ite drill string 3(use titanium drill pipes on the lower part of the Φ101.6 mm drill pipe section).In order to explore the dy-namic characteristics of the composite drill strings,a dynamic model of the composite drill string based on the Hamiton prin-ciple 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 convention-al 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.
关键词
钛合金钻杆/复合钻柱/超深井/动力学特性/钻井参数Key words
titanium drill pipe/composite drill string/ultra-deep well/dynamic characteristics/drilling operation parameters引用本文复制引用
基金项目
国家重点研发计划(2021YFB3700804)
国家自然科学基金(52374008)
国家自然科学基金(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(2021JM-607)
出版年
2024
国家科技期刊平台
NSTL
万方数据