Investigating the mechanism of oil displacement by polymer flooding through Bach Ho Lower Miocene core plugs
Abstract
The Bach Ho Lower Miocene reservoir is currently the main object for research on enhanced oil recovery (EOR) by injecting chemicals such as polymer or surfactant solution. Studies in recent years have mentioned the ability of polymer solution to enhance the displacement efficiency. The results of experimental high-concentration heat-resistant co-polymer injection through core plugs from Bach Ho Lower Miocene reservoirs showed that the volume of oil displaced was increased by 12.1% as compared with water injection. A better understanding of the displacement-sweep mechanism will facilitate the design of actual injection scheme for the study reservoirs. This paper presents the results of experiments to examine in detail the displacement mechanisms and improve the sweep efficiency of polymer solution.
References
Lê Đình Lăng và nhóm tác giả. Một số nghiên cứu gia tăng thu hồi dầu cho các mỏ Bạch Hổ và mỏ Rồng. Tuyển tập báo cáo Hội nghị Khoa học và Công nghệ Quốc tế “Dầu khí Việt Nam 2010 - Tăng tốc phát triển”. 2010: p. 937 - 948.
Nguyễn Hải An, Hồ Anh Phong. Báo cáo kết quả thử nghiệm bơm ép polymer biến tính bức xạ A-806. Lưu trữ Phòng Thí nghiệm Công nghệ mỏ - Viện Dầu khí Việt Nam. 2008.
Wang Demin, et al. Study of the Mechanism of polymer solution with visco-elastic behavior increasing microscopic oil displacement efficiency and the forming of steady “oil threat” flow chanels. Paper No. SPE 68723. SPE Asia Pacific Oil and Gas Conference and Exhibition. April 17 - 19, 2001.
Yang Fuline, et al. High concentration polymer flooding is successful. Paper No. SPE 88454, SPE Asia Pacific Oil and Gas Conference and Exhibition. Oct. 18 - 20, 2004.
1. The Author assigns all copyright in and to the article (the Work) to the Petrovietnam Journal, including the right to publish, republish, transmit, sell and distribute the Work in whole or in part in electronic and print editions of the Journal, in all media of expression now known or later developed.
2. By this assignment of copyright to the Petrovietnam Journal, reproduction, posting, transmission, distribution or other use of the Work in whole or in part in any medium by the Author requires a full citation to the Journal, suitable in form and content as follows: title of article, authors’ names, journal title, volume, issue, year, copyright owner as specified in the Journal, DOI number. Links to the final article published on the website of the Journal are encouraged.
