西南石油大学学报(自然科学版)

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Research and Discuss on Key Parameters of Steam Flooding and Gravity Drainage Tridimensional Development in Super Heavy Oil Reservoir

Wang Haisheng   

  1. Development Department of Liaohe Oilfield Company,PetroChina,Panjin,Liaoning 124010,China
  • Online:2014-08-01 Published:2014-08-01

Abstract:

SAGD is one of the oil recovery improvement methods after cyclic steam stimulation in super heavy oil reservoir. It has been applied successfully in Liaohe Oilfield already. But the steam chamber could not extended to upper part of reservoir due to the reservoir thickness and the non-developed inter-bed,which led to low using degree and OSR,and restricted the further application of SAGD. Aiming at solving the key problem,this paper innovates a new technology named steam flooding and gravity drainage tridimensional development in super heavy oil reservoir on the basis of both physical simulation and numerical simulation study. Its mechanism is steam flooding in flat and gravity drainage vertically. The inter-bed distribution,influence and the sealing ability are also studied. This paper discusses the technical limitation of steam flooding and gravity drainage technology,and proposes tridimensional well pattern All above provide a powerful technology reference for the development of steam flooding and gravity drainage.

Key words: SAGD, inter-bed, steam flooding and gravity drainage, tridimensional development, steam chamber, super heavy
oil reservoir