ANALYSIS AND OPTIMIZATION OF INJECTIVITY BY GASALTERNATINGWATER FLOODING IN RESERVOIR

doi:10.3863/j.issn.1000-2634.2008.06.029

西南石油大学学报(自然科学版) ›› 2008, Vol. 30 ›› Issue (6): 121-125.DOI: 10.3863/j.issn.1000-2634.2008.06.029

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

ANALYSIS AND OPTIMIZATION OF INJECTIVITY BY GASALTERNATINGWATER FLOODING IN RESERVOIR

LI Ju-hua^1a,1bJIANG Tao^1cGAO Wen-jun²LIU Bin²

1.Yangtze University：a.Department of Petroleum Engineering，b.Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education，c.Science and Technology Agency，Jingzhou Hubei 434023，China；2.Exploration and Development Research Institute，Tuha Oilfield Company，CNPC，Hami Xinjiang 839009，China

Received:1900-01-01 Revised:1900-01-01 Online:2008-12-20 Published:2008-12-20

Abstract

Abstract: Injectivity reduction is an important factor to restrict recovery increase by gasalternatingwater flooding.Based on dimensionless scaling rule by inspectional analysis，the plot displaying the relationship between dimensionless injectivity and heterogenity is established in threephases relative permeability and capillary pressure hysteresis model by compositional simulation.Meanwhile，the optimal ratio of injected water and gas is obtained.The results show that displacement effect by increasing enrichment of injection gas is batter than by increasing injection velocity in a certain reservoir system，injectivivty decline trend is more obvious if water/injection gas ratio is higher.The optimal injection is that WGR is 2 for low viscous and gravity force ratio and WGR 1 for low viscous and gravity force ratio.It suggests that characteristic of formation and injecting fluid is involved in discussing injecting optimization

Key words: gasalternatingwater flooding, dimensionless injectivity, inspectional analysis, water and gas ratio, viscous and gravity force ratio

CLC Number:

TE319

LI Ju-huaa;b JIANG Taoc GAO Wen-jun LIU Bin . ANALYSIS AND OPTIMIZATION OF INJECTIVITY BY GASALTERNATINGWATER FLOODING IN RESERVOIR[J]. 西南石油大学学报(自然科学版), 2008, 30(6): 121-125.

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ANALYSIS AND OPTIMIZATION OF INJECTIVITY BY GASALTERNATINGWATER FLOODING IN RESERVOIR

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