Research on Wellbore Security Equipment and Performance of Offshore Heavy Oil Thermal Recovery Wells

Abstract

Abstract: A wellbore security device with sealed tubing and annulus was designed in response to spatial changes of wellbores in rod pumping systems. Setting and unseting processes of the rubber sleeves were analyzed based on principle of volume invariance. Mechanics models of the rubber sleeves were established, and the well startup and shut-in forces under different pressures were studied. A new equipment of sealed rods was developed to solve the wellbore security problems in thermal recovery and rod lifting of offshore heavy oil.

Key words: offshore platform, heavy oil, thermal recovery, wellbore security, mechanics model

摘要：

针对海上平台有杆采油油管井筒空间的变化，设计了密封油管与抽油杆环空的井筒安全装置。基于体积不变性原理分析了密封橡胶筒的坐封和解封过程，建立了橡胶筒的力学模型，详细研究了不同油井压力下的开井力和关井力。设计的杆管环空密封的新装置，可解决海上稠油热采有杆举升新工艺的井筒安全问题。

关键词: 海洋平台, 稠油, 热采, 井筒安全, 力学模型

CLC Number:

TE933
TE952

YU Yanqun, CHANG Zongyu, QI Yaoguang, XUE Xin. Research on Wellbore Security Equipment and Performance of Offshore Heavy Oil Thermal Recovery Wells[J]. China Mechanical Engineering.

余焱群, 常宗瑜, 綦耀光, 薛鑫.

海上稠油热采井井筒安全设备及其性能研究

[J]. 中国机械工程.

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