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Edition and Publication:
< Natural Gas and Oil > Editorial Department
Hosted by:
China Petroleum Engineering & Construction Corporation Southwest Company
Authorized by:
China Petroleum Engineering & Construction Corporation
Co-hosted by:
Overseas Research Center of Research Institute of Petroleum Exploration and Development
Editor in Chief:
Du Tonglin
Vice Editor in Chief:
Tang Xiaoyong,Pu Liming
Address:
No.6, Shenghua Road, High-tech District, Chengdu, Sichuan, China
Postal Code:
610041
Tel:
028-86014709
028-86014500
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cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
CN 51-1183/TE

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Technical Review on the Development of Single-Well SAGD in Foreign Heavy Oil Reservoirs

Author of the article:Li Haozhe, Xiong Biao, Zhang He, Gong Xiaoya

Author's Workplace：College of Petroleum Engineering of China University of Petroleum-Beijing

Key Words：Heavy oil; SAGD; Horizontal SW-SAGD; Vertical SW-SAGD; U-shape SW-SAGD

Abstract：SAGD is an important technology in the recovery of heavy oil. It has been widely used around the world since it was firstly proposed by Butler. Meanwhile, the SAGD technology has also faced countless challenges. The performance of SAGD process is strongly influenced by many factors. Variants of SAGD are conceived in order to improve its performance under different geological conditions and the single-well SAGD (SW-SAGD) is one of them. Based on an intensive investigation of research on SW-SAGD both at home and abroad, this paper presents the technology principle, technical characteristics and application results of Horizontal SW-SAGD, Vertical SW-SAGD and U-shape SW-SAGD respectively. It shows that SW-SAGD can be effectively used in the development of heavy oil reservoirs with special geological conditions as thin reservoir and interbed where the conventional SAGD or dual-horizontal-well SAGD can’t be commercially used and it has wide application prospect.