西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (6): 63-65.DOI: 10.3863/j.issn.1674-5086.2009.06.013

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THE EVALUATION WAY FOR WATER STORAGE RATE AND WATER FLOODING INDEX OF WATER INJECTION EFFECT IN ULTRA-LOW PERMEABILITY

JIANG Yuan-zheng1 JIN Shuan-lian1 YANG Xiao-gang2 WANG Bo1 SUN Wu-peng1   

  1. 1.Exploration & Development Research Institute of Changqing Oilfield,CNPC,Xi′an Shaanxi 710021,China 2.Oil and Gas Technology Research Institute of Changqing Oilfield,CNPC,Xi′an Shaanxi 710021,China)JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION),VOL.31,NO.6,63-65,2009(ISSN 1674-5086,in Chinese
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20

Abstract: In the mid-late period of production in ultra-low permeability reservoirs,the evaluation of water injection is very important to development adjustment.What is the relationship among formation water storage rate,water flooding index and the water injection effect in ultra-low permeability reservoirs? H block of Ansai Oilfield is taken as example,by means of the curve plotting and analysis of formation water storage rate and water flooding index,the effect of development by water flooding to the block is evaluated,and the result is verified by using in-door experiment and in-situ dynamic data.It is recognized in the process of development by water injection of ultra-low permeability reservoirs,if the actual water storage rate and water flooding index curves are located between the standard curves,the effect of development by water injection is the best,and if they are above or below the standard curves,the effect is not so good.Water storage rate and water flooding index play an objective and correct evaluation role to the effect of development by water injection in ultra-low permeability reservoirs.

Key words: ultra-low permeability, water storage rate, waterflooding index, waterflooding, geological reserves, Ansai Oilfield

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