Lithologic Reservoirs ›› 2021, Vol. 33 ›› Issue (3): 169-176.doi: 10.12108/yxyqc.20210318

• OIL AND GAS FIELD DEVELOPMENT • Previous Articles     Next Articles

Efficient management of water flooding reservoirs based on Pollock streamline tracing

SUN Liang1, LI Baozhu1, LIU Fan2,3   

  1. 1. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
    2. CNOOC Research Institute Co., Ltd., Beijing 100028, China;
    3. State Key Laboratory of Offshore Oil Exploration, Beijing 100028, China
  • Received:2020-11-13 Revised:2021-03-05 Published:2021-06-03

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Abstract: Horizontal well pattern is mainly used for water flooding development of thin carbonate reservoirs in the Middle East. Currently，the problems of high water flooding degree and low water injection efficiency are becoming increasingly prominent. Therefore，a method of efficient water flooding management based on the technique of Pollock streamline tracing was proposed to evaluate water flooding index and optimize injection-production parameters. According to the streamline simulation，the dynamic well groups were determined，and the distribution factors of wells were calculated. The injection-production connectivity and the water injection efficiency were evaluated. The water flooding development effect could be improved by optimizing the injection-production policies. This method was applied to K1 reservoir，and the results show that the distribution of injected water and streamlines in well groups became more balanced. The ineffective water circulation in the linear direction of horizontal wells was obviously reduced. The water injection efficiency and conformance factor were improved. The water cut of pilot wells were decreased by more than 10% on average. This technique is of great significance to stabilizing the production of oil fields.

Key words: streamline tracing, water flooding management, water injection efficiency, carbonate reservoir, the Middle East

CLC Number: 

  • TE344
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