Auto-optimization of production-injection rate for reservoirs with strong natural aquifer at ultra-high water cut stage

  • Zhanxiang LEI ,
  • Longxin MU ,
  • Hui ZHAO ,
  • Jian LIU ,
  • Heping CHEN ,
  • Fenshu JIA ,
  • Zhanzong ZHOU
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  • 1. Research Institute of Petroleum Exploration & Development, PetroChina, Beijing 100083, China;
    2. College of Petroleum Engineering, Yangtze University, Wuhan 430100, China

Received date: 2018-09-06

  Revised date: 2019-02-18

  Online published: 2019-08-24

Supported by

Supported by the China National Science and Technology Major Project(2016ZX05031-001)

Abstract

Based on the optimal control theory and taking the production law of reservoirs with strong natural aquifer as the basic constraint, a mathematical model of liquid production for such reservoirs in the later stage of development is established. The model is solved by improved simultaneous perturbation stochastic approximation algorithm (SPSA), and an automatic optimization software for liquid production is developed. This model avoids the disadvantage of traditional optimization methods that only focus on the maximum value of mathematics but ignore the production law of oilfield. It has the advantages of high efficiency of calculation, short period and automatic optimization. It can satisfy the automatic optimization of liquid production in later stage of oilfield development. The software was applied in the oilfield development of D oilfield, Ecuador in South America, and realized the automatic optimization of liquid production in the later stage of oilfield development.

Cite this article

Zhanxiang LEI , Longxin MU , Hui ZHAO , Jian LIU , Heping CHEN , Fenshu JIA , Zhanzong ZHOU . Auto-optimization of production-injection rate for reservoirs with strong natural aquifer at ultra-high water cut stage[J]. Petroleum Exploration and Development, 2019 , 46(4) : 804 -809 . DOI: 10.1016/S1876-3804(19)60238-7

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