西南石油大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (4): 127-129.DOI: 10.3863/j.issn.1000-

• 石油与天然气工程 • Previous Articles     Next Articles

THE EXPERIMENT STUDY ON CHANGE MECHANISM OF ORIGINAL WATERCUT IN EXTRALOW PERMEABILITY SANDSTONE RESERVOIR

GUO Long1,2   

  1. 1.School of Petroleum Engineering,China University of Petroleum,Dongying Shandong 257061,China;2.Petroleum Development Center of Shengli Petroleum Administration Bureau,SINOPEC,Dongying Shandong 257000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-08-20 Published:2008-08-20

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Abstract:

Through testing the change of water saturation and watercut,the experiment studies the characteristics of water flooding extralow permeability sandstone reservoir.The testing reveals that the change of watercut of low saturation sandstone reservoir consists of three phases,the rapid rising phase,stable fluctuating phase and slow rising phase.And the value of the rapid rising and stable fluctuating phases can be estimated by oil and water relative permeability curve.

Key words: extralow permeability, earlier watercut, physical simulation, original water saturation, change mechanism

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