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research-article

The Experimental Analysis about the Role of Flue Gas Injection for Horizontal Well Steam Flooding

[+] Author and Article Information
Zhanxi Pang

State Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumThe Faculty of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
pxiad9827@163.compxiad9827@cup.edu.cn

Peng Qi

MOE Key Laboratory of Petroleum Engineering, China University of PetroleumThe Faculty of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Petroleum2013@163.com

Fengyi Zhang

Tianjin Bohai Oilfield Institute, CNOOC Ltd., Tianjin 300452, China
pxhe5211@163.com

Taotao Ge

Tianjin Bohai Oilfield Institute, CNOOC Ltd., Tianjin 300452, China
474498189@qq.com

Huiqing Liu

State Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumThe Faculty of Petroleum Engineering, China University of Petroleum, Beijing 102249, China
Liu.HQ19660327@hotmail.com

1Corresponding author.

ASME doi:10.1115/1.4039870 History: Received August 10, 2016; Revised March 22, 2018

Abstract

Flue gas is a kind of non-condensate gas mainly consisted of CO2 (volume percentage about 20%) and N2 (volume percentage about 80%). It is able to further improve the development effect of steam flooding in thick heavy oil reservoirs. In this paper, the dissolution characteristics of flue gas into oil were researched through the PVT apparatus under different conditions. Then sand-pack experiments and 3D physical simulation experiments were carried out to analyze the oil displacement effect of flue gas assisted steam flooding. According to the results of sand-pack experiments, flue gas assisted steam flooding has higher displacement efficiency than pure steam flooding under different temperature conditions. Aiming at 3D physical simulation experiments, many parameters of production performance, such as oil production, water cut, oil-steam ratio and oil recovery factor, were analyzed from the stage of steam flooding to the stage of flue gas assisted steam flooding. The EOR mechanisms of flue gas assisted steam flooding were summarized by analyzing to the variation of temperature field, the properties of heavy oil and the distribution of remaining oil.

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