摘要
针对超短半径水平井完井筛管下入过程中摩阻限制了完井筛管下入长度的问题,提出了超短半径水平井液压驱动完井管柱下入技术,设计了由内到外依次为导向管、液压驱动管、非金属完井筛管的完井管柱结构,完成了配套工具设计,建立了管柱力学-液压耦合模型。基于某深层煤层气超短半径水平井井身结构数据,应用管柱力学-液压耦合模型进行了数值计算,结果表明相同条件下液压驱动完井管柱下入长度为常规技术完井管柱下入长度的17倍。对数值计算结果进行了多因素正交分析,结果表明完井管柱结构和非金属复合连续筛管与井筒间摩擦系数是对液压驱动完井管柱下入长度影响最大的两个因素。优选了两种适用于不同条件的超短半径水平井液压驱动完井管柱结构,最大下入长度分别为381,655 m。研究结果可为超短半径水平井液压驱动非金属复合连续筛管完井技术提供理论支持。
Focusing on the extending length restriction of the completion screen pipe resistance running into ultra-short radius horizontal well,this paper proposed technology of hydraulic drive completion tubular string running into ultra-short radius horizontal well.Innovative hydraulic drive tools and string structure are designed,which are composed of guide tubing,hydraulic drive tubing and non-metallic completion screen pipe from inside to outside.A novel mechanic-hydraulic coupling model is established.Based on the wellbore structure of an ultra-short radius horizontal well for deep coalbed methane,the numerical calculations of force and hydraulic load on tubular strings were accomplished by the mechanic-hydraulic coupling model.The results show that the extending length of completion tubular string with the hydraulic drive is 17 times that of conventional completion technology under the same conditions.The multi-factor orthogonal design is adopted to analyze the numerical calculations,and the results show that the extending length of the completion tubular string is mainly affected by the completion tubular string structure and the friction coefficient between the non-metallic composite continuous screen pipe and the wellbore.Two series of hydraulic drive completion tubular string structures suitable for ultra-short radius horizontal wells under different conditions are optimized,with the extending limits of 381 m and 655 m,respectively.These researches will provide theoretical guidance for design and control of hydraulic drive non-metallic composite continuous completion screen pipe running into ultra-short radius horizontal wells.
作者
毕延森
鲜保安
石小磊
高德利
BI Yansen;XIAN Baoan;SHI Xiaolei;GAO Deli(MOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Beijing 102249,China;Institute of Resources&Environment,Henan Polytechnic University,Jiaozuo 454000,China)
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2022年第4期818-827,共10页
Petroleum Exploration and Development
基金
国家自然科学基金创新研究群体项目(51821092)
国家自然科学基金重点项目“页岩和致密油气田高效开发建井基础研究”(U1762214)。
关键词
超短半径水平井
筛管完井
液压驱动
非金属复合连续筛管
下入长度
ultra-short radius horizontal well
screen pipe completion
hydraulic drive technology
non-metallic composite continuous screen pipe
screen pipe extending length
