海上平台有杆采油的液压抽油机设计  

Design of Hydraulic Sucker Rod Pumping Unit for Offshore Platform

作　　者：余焱群[1,2] 常宗瑜 綦耀光[2] 肖宇 王邻睦[3] 薛鑫 

机构地区：[1]中国海洋大学工程学院,山东青岛266100 [2]中国石油大学机电工程学院,山东青岛266580 [3]中海油能源发展股份有限公司油田建设工程分公司,天津300452

出　　处：《中国海洋平台》2017年第6期14-19,共6页China offshore Platform

基　　金：国家自然科学基金项目(51174224);国家油气科技重大专项(2016ZX05066;2016ZX05042);山东省自然科学基金项目(ZR2014El015)

摘　　要：针对海上稠油热采及低产油井开采需要,提出海上平台有杆采油的新工艺;基于海上平台结构空间限制,设计一种新型长冲程、低冲次、结构紧凑的小型液压抽油机。阐述抽油机的整体结构和工作原理,建立悬点载荷的数学模型,基于压杆稳定性确定组合液压缸的结构尺寸,运用Timoshenko梁分析理论分析3种工况下机架的变形量和应力值,并加工等比例实验室模型样机。分析结果表明:抽油机具有较好的刚度和强度;模型样机运转平稳,说明其整体结构设计合理、控制策略正确。A new technology about rod pumping in offshore platform is introduced according to the demand of offshore heavy oil thermal recovery and the production of stripper well.A new kind of miniature hydraulic pumping unit with long-stroke,low pumping speed and compact structure is designed to resolve the problem of space limitation.The whole structure and the working principle of this pumping unit are described.Mathematical models are modeled based on the polished rod loads,and the structure and size of composite hydraulic cylinder are determined considering for compression bar＇s stability.The deformation and stress of the frame are analyzed by Timoshenko software,and the laboratory scale model prototype is also prepared.The test result shows that the hydraulic sucker rod pumping unit has better stiffness and strength.The model prototype runs smoothly which indicates that the whole structure design of pumping unit is reasonable and the control strategy is correct.

关 键 词：海上平台 液压抽油机 结构设计 力学分析 

分 类 号：TE933[石油与天然气工程—石油机械设备]