深水井口系统切割回收工具设计研究  

Design and Research on Cutting and Retrieving Tool of Deepwater Subsea Wellhead System

作　　者：陈瑶[1,2,3] 秦浩智 谭帅 

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70-75,共6页China Petroleum Machinery

基　　金：国家科技重大专项“大型油气田及煤层气开发”之子课题“深水水下井口切割回收工具系统研制”(2012ZX05026-001-008)

摘　　要：我国已经进入深水勘探阶段,由于受到钻探区域海况的影响,用传统的切割回收方法回收海底井口系统变得非常困难。鉴于此,分析了现有井口系统切割工具的结构及工作原理,采用提拉式水力驱动切割,设计了深水井口系统切割回收工具。分析了作业过程中不同状态下对工具的受力,对关键零部件进行了有限元分析,结果表明卡爪、定位基座及解锁卡壳体均满足强度要求,整体结构设计安全。并针对C13-8-42割刀进行了切割参数优选。研究结果可为螺杆钻具选择及作业过程的顺利实施提供参考。In accordance with the need of deep water production, this paper analyzed the existing cutting tool’ s structure and working principle, and developed the lift-draw type cutting and retrieving tool of deepwater subsea wellhead system. The paper also analyzed the tool’ s stress in different working conditions and made a finite element analysis of key components. The results showed that the jaw, the positioning base and the unlocking case met the strength requirements and the overall structural design was safe. The cutting parameters of C13-8-42 cutter were optimized. The research results can provide a reference for selection of PDM drill and smooth implementation of subsea operation.

关 键 词：套管切割 回收工具 水力学分析 有限元分析 

分 类 号：TE952[石油与天然气工程—石油机械设备]