Journal of Southwest Petroleum University(Science & Technology Edition) ›› 2023, Vol. 45 ›› Issue (5): 81-87.DOI: 10.11885/j.issn.1674-5086.2021.06.21.01

• OIL AND GAS ENGINEERING • Previous Articles     Next Articles

Optimization of SAGD Key Parameters for Vertical Assisted Double Horizontal Wells in Super Heavy Oil Reservoir

WANG Qing1, YANG Haozhe2, LIU Jia1, GAO Yu1, GAO Liang1   

  1. 1. Research Institute of Exploration and Development, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China;
    2. Fengcheng Oilfield Operation District, Xinjiang Oilfield Company, PetroChina, Karamay, Xinjiang 834000, China
  • Received:2021-06-21 Published:2023-10-28

Abstract: In view of the problems of unbalanced development of steam cavity, slow lateral expansion and steam channeling in the development of SAGD in super heavy oil reservoir, multi well combination, multi-media assistance and multi measures are adopted to increase development efficiency on the basis of SAGD. Among them, vertical well assistance SAGD can significantly improve the development of steam cavity, improve oil production rate, and requires less cost and strong operability. At present, the key parameters of vertical well assisted SAGD technology have not been systematically demonstrated. In order to achieve the optimal production effect, the vertical well auxiliary time, perforation parameters considering interlayer, injection production parameters in the preheating stage of vertical well huff and puff, and injection production parameters in the auxiliary stage of vertical well to steam drive in the typical well area Z01 of super heavy oil in Fengcheng Oilfield are optimized through numerical simulation. The research results show that the SAGD measure of vertical well assisted double horizontal wells can effectively improve the production degree and production rate of horizontal well, improve the development effect, and the scheme after parameter optimization is practical and effective. The results provide important technical support for vertical well assisted SAGD efficient development of super heavy oil reservoir.

Key words: super heavy oil, SAGD assisted by vertical well, numerical simulation, perforation parameters, injection production parameters optimization

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