Internet Workstation

Edition and Publication

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
Email:
cnpc-ngo@cnpc.com.cn
Issue:ISSN 1006-5539
          CN 51-1183/TE

Links

    Your Position :Home->Past Journals Catalog->2019 Vol.3

    Research on Optimization of Perforation Combination Mode in Early Period Polymer Flooding Oilfield
    Author of the article:Wang Xinran, Cai Hui, Li Yanlai, Li Zhanfeng
    Author's Workplace:Tianjin Branch of CNOOC (China) Limited
    Key Words:Perforation combination mode; Early polymer flooding; Laboratory experiment; Remaining oil distribution law; Enhance oil recovery; Offshore oilfield
    Abstract:Different perforation combination means injection well and production well that located in the same injection-production unit, which perforated the same or the different degree, so as to form the injection-production combination mode to affect the oil and water movement law.In order to clarify the remaining oil distribution law and development performance under different perforation combination mode in early period polymer flooding oilfield, so as to realize the longer stable production period and higher oil recovery.Bohai oilfield Z is taken as target oilfield, according to the similarity principle, the actual characteristic parameters of the reservoir are selected as reference and three dimensional physical laboratory experimental study under different perforation combination mode is carried out.The research result shows that, in contrast to the water flooding at the same period, recovery rate could increase by 5.3~6.5 times for different perforation combination mode, and the ultimate oil recovery increases by 1.3~1.4 times.When the upper part of the injection well is perforated and the production well is fully perforated, the remaining oil distribution of water flooding and polymer flooding is the least, the displacement degree is the highest,and the anhydrous recovery period is the longest.Compared with other perforation combinations, the stable production period is prolonged by an average of 1.2 times, the water flooding recovery rate is increased by 3.7%~6.0%, and the polymer flooding recovery rate is increased by 2.5%~4.1%, which is the recommended perforation combination.Applying the research results to the actual adjustment of oil field potential tapping, the adjustment wells have achieved a stable production period of up to two years, which can provide guidance for the follow-up expansion and adjustment of oil field.

     

    CopyRight©2025Natural Gas and Oil Editorial Office Reserved 京ICP备11013578号-1