水下井口头密封总成系列化设计与分析  

Series Design of Seal Assembly on Subsea Wellhead System

作　　者：秦浩智 陈瑶[1,2,3] 肖文生[1,2] 

机构地区：[1]国家采油装备工程技术研究中心 [2]中国石油大学(华东)机电工程学院 [3]兰州兰石能源装备工程研究院青岛分院

出　　处：《石油机械》2016年第7期55-59,共5页China Petroleum Machinery

基　　金：国家863计划项目"海洋深水水下井口头系统与生产平台采油井口系统研制技术"(2012AA09A204);山东省自主创新项目"ZJ90/5850DB海洋钻井装备"(2012CX80101)

摘　　要：我国的密封总成仅局限于浅海和低压密封,不能实现不同海水深度和不同压力的钻井需求。鉴于此,通过对系列化设计方法和金属密封机理的研究,对影响密封总成密封性能和压力等级的关键因素进行了分析,确定了密封总成系列化设计原则和评价标准,得到密封总成的系列化设计方法,验证了103.4 MPa井口头系统密封总成作为系列化设计的基型能够达到预定的密封效果并能安全回收,完成了34.5、68.9和137.9MPa 3个压力等级密封总成的结构参数设计,形成了密封总成的系列化。利用ANSYS Workbench对基型密封总成的密封性能做了详细的力学分析。提出的密封总成设计方法可以为整套井口头系统的系列化设计提供理论依据和指导。The seal assembly domestically produced is used only under shallow water and low pressure condi-tions and fails to meet the needs of usage under different water depths and drilling under different pressures. In view of this, this paper studies the series design method and metal sealing mechanism, and analyzes the key factors that influence sealing performance and pressure rating of seal assembly, so as to define the series design principle and evaluation criteria of seal assembly and identify the series design method. The study confirms that the 103. 4 MPa wellhead seal assembly system, as the basic type of series design, can achieve the desired sealing effect and en-sure safe recovery, works out the structural parameters of seal assembly under three pressure levels of 34. 5, 68. 9 and 137. 9 MPa, and finishes the series design of seal assembly. ANSYS Workbench is used to complete a detailed mechanical analysis of the sealing performance of the basic type seal assembly. The proposed method could provide the theoretical basis and guidance for series design of the entire wellhead system.

关 键 词：井口头 密封总成 系列化设计 有限元分析 

分 类 号：TE952[石油与天然气工程—石油机械设备]