西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (6): 25-28.DOI: 10.3863/j.issn.1674-5086.2010.06

• 地质勘探 • Previous Articles     Next Articles

STUDY ON THE CHARACTERISTICS OF INTERLAYERS AND RESERVOIR HETEROGENEITY OF BAOLANG OILFIELD

LIU Bin1,2,HE Yong-ming3,DUAN Xin-guo3   

  1. 1.The Faculty of Resource,China University of Geosciences,Wuhan Hubei 430074,China;2.Henan Oilfield Company,SINOPEC,Nanyang Henan 473132,China;3.College Of Energy Resources,Chengdu University of Technology,Chengdu Sichuan 610059,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-12-20 Published:2010-12-20

Abstract:

Jurassic Sangonghe formation of Baolang Oilfield belongs to shallow water and gentle slope braid deltaic deposition,and it has strong heterogeneity.It can be divided into four retrograding overlying short-term cycles by analysing the channel types and sedimentary cycles.Different sedimentary cycles can result in regular changes in channel types,reservoir thicknesses,sandbody sizes interlayer distributions and sandbody connecting methods etc.The changes of interspace can lead to the changing of reservoir macroscopic heterogeneity.The interlayer′s type,origin and pattern are the main reasons for the extreme heterogeneity.A good understanding of the reservoir macroscopic heterogeneity could enhance the exploitation level of oilfield and the final recovery efficiency.

Key words: Yanqi Basin, Baolang Oilfield, reservoir heterogeneity, interlayer, recovery efficiency

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