西南石油大学学报(自然科学版)

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Productivity Calculation Method for Complex Structure Well Thermal
Recovery Based on Surrogate Model

Zhu Jinli1, Li Junjian2, Zhou Yuanlong3, Qin Jie4, Sang Guoqiang2   

  1. 1. Greatwall Drilling Company,CNPC,Chaoyang,Beijing 100101,China
    2. Exploration and Development Research Institute,PetroChina,Haidian,Beijing 100083,China
    3. MOE Key Laboratory of Petroleum Engineering,China University of Petroleum,Changping,Beijing 102249,China
    4. Production and Operation Department of No.8 Oil Production Plant,Daqing Oil Field Company Ltd.,Daqing,Heilongjiang 163514,China
  • Online:2013-06-01 Published:2013-06-01

Abstract:

Complex structure well is an important way of developing heavy oil reservoirs,and its productivity calculation has
always been the key point of the evaluation. In view of the implementation of complicated structure well in Liaohe region,
ten influence factors on the productivity of complex structure wells,such as reservoir thickness,reservoir permeability,branch
length,branch number,branch space,branch angle,stem injection rate,steam quality,soak time,cyclic steam injection volume
are evaluated and analyzed. On this basis,we established a surrogate model of complex structure well productivity by using
response surface method,and presented a new method of evaluating the productivity of complex structure well. This method
was applied to wells in Liaohe region,the actual production is quite close to the computing productivity with the average value
8.5%.

Key words: complicated structure well, steam soaking, influence factors, surrogate model, productivity