EVALUATING METHODS OF WATER-FLOODING DEVELOPMENT EFFECTIVENESS IN ULTRA-LOW PERMEABILITY RESERVOIR

doi:10.3863/j.issn.1674-5086.2009.01.014

西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (1): 58-60.DOI: 10.3863/j.issn.1674-5086.2009.01.014

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

EVALUATING METHODS OF WATER-FLOODING DEVELOPMENT EFFECTIVENESS IN ULTRA-LOW PERMEABILITY RESERVOIR

LIU Hui^aHE Shun-li^aLI Jun-jian^aYANG Ming-hui^bSHANG Xi-tao^a

China University of Petroleum：a.MOE Key Laboratory of Petroleum Engineering,b.Basin & Reservoir Research Center,Changping Beijing 102249,China

Received:1900-01-01 Revised:1900-01-01 Online:2009-02-20 Published:2009-02-20

Abstract

Abstract:

Practice in production of ultra-low permeability reservoirs indicate that it is difficult to evaluate the reservoir production performance with conventional development index effectively,so,the effective flooding permeability is introduced,and research shows the fluid can flow in the sublayers whose permeability is greater than the limit.Formula calculation of the effective flooding permeability in two-phase flow of threshold pressure gradient is derived by using the method of piston drive,and proportion of flowing sublayers is determined.With net thickness and permeability of each sublayer that is weighted on on average,each sublayer and oil well deliverability are calculated,then actual threshold geologic reserve is determined finally.Conventional development indexes,such as degree of reserve recovery etc,are amended by using threshold geologic reserve.Study on production performance in that the development indexes that are amended can be used to evaluate development effectiveness accurately and efficiently.

Key words: ultra-low permeability, effective flooding permeability, threshold pressure gradient, geologic reserve, development evaluation

CLC Number:

TE341

LIU HuiaHE Shun-liaLI Jun-jianaYANG Ming-huibSHANG Xi-taoa. EVALUATING METHODS OF WATER-FLOODING DEVELOPMENT EFFECTIVENESS IN ULTRA-LOW PERMEABILITY RESERVOIR[J]. 西南石油大学学报(自然科学版), 2009, 31(1): 58-60.

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EVALUATING METHODS OF WATER-FLOODING DEVELOPMENT EFFECTIVENESS IN ULTRA-LOW PERMEABILITY RESERVOIR

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