Lithologic Reservoirs ›› 2021, Vol. 33 ›› Issue (5): 172-180.doi: 10.12108/yxyqc.20210517

• OIL AND GAS FIELD DEVELOPMENT • Previous Articles     Next Articles

Flow regulation adaptability of rubber particles in longitudinal double-layer fractured-vuggy reservoirs

MAO Zhiqiang1, ZHANG Wen2, WU Chunzhou3, CHEN Lifeng1, CHEN Yadong1, LI Gang1, ZENG Huiyong1, LIU Liang1   

  1. 1. School of Petroleum Engineering, Yangtze University, Wuhan 430100, China;
    2. Research Institute of Petroleum Engineering and Technology, Sinopec Northwest Oilfield Company, Urumqi 830011, China;
    3. China Oilfield Services Co., Ltd., Tianjin 300450, China
  • Received:2021-01-25 Revised:2021-04-18 Online:2021-10-01 Published:2021-09-30

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Abstract: In order to solve the problems of oil well flooding and production decline caused by strong heterogeneity, a new type of rubber particle flow regulating agent was used to study the water flooding rule and injection parameter optimization of longitudinal double-layer fractured-vuggy reservoirs through micro-displacement experiment of plexiglass etching model. The results show that the resistance of solid media to fluid flow is almost zero when the oil-water two-phase flow occurs, and the gravity action is prominent. Therefore, there are still a lot of residual oil of karst cave, flow around oil and attic oil with poor connectivity after the longitudinal doublelayer fractured-vuggy reservoir is displaced by injected water. In addition, the injection parameters of rubber particle flow regulating agent were optimized. The optimal injection volume is 0.02 PV, the optimal particle size is 0-1 mm and 2-4 mm, and the optimal injection speed is 25 mL/min. The research results were applied to well TK50 X, and good effect of increasing oil production and decreasing water cut has been achieved. The research results can provide some reference for the future research of longitudinal double-layer fractured-vuggy reservoirs.

Key words: longitudinal double-layer, fractured-vuggy reservoir, rubber particles, injection parameters, optimization

CLC Number: 

  • TE341
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