西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (1): 16-20.DOI: 10.3863/j.issn.1674-5086.2010.01.003

• 地质勘探 • Previous Articles     Next Articles

MICROSCOPIC EXPERIMENT ON OIL FLOWING THROUGH POROUS MEDIA IN LOW PERMEABILITY SANDSTONE

ZHU Zhi-qiang1;ZENG Jian-hui2;WANG Jian-jun1   

  1. 1.Business Development Research Department of International Center in RIPED,CNPC,Haidian Beijing 100083,China;2.State Key Laboratory of Petroleum Resources and Exploration,Changping Beijing 102249,China
  • Received:2008-12-25 Revised:1900-01-01 Online:2010-02-20 Published:2010-02-20
  • Contact: ZHU Zhi-qiang

Abstract:

By using natural sandstone microscopic model and the waterdriveoil experiment under the condition of similarly real geologic situation,the crude oil flowing through porous media in low permeability sandstone is simulated.The flow course and characteristics of crude oil in pores and throats are observed.The micromechanism of oil flowing through porous media in low permeability sandstone is analyzed and discussed.The result shows that the flow pathway is complicated and the flow patterns appear three types,they are stable,fingering and preferable ones.The relationship between threshold pressure gradient and sandstone porosity is complicated when oil flows in low permeability sandstone,but there is a good relationship between the gradient and the permeability,and also,there is a good relationship between crude oil flowing velocity and displacing pressure,when flowing in different permeability sandstones at same velocity,oil displacing pressure will decrease as the permeability increases.

Key words: low permeability sandstone, migration, pattern flowing through porous media, threshold pressure gradient, simulation experiment

CLC Number: