西南石油大学学报（自然科学版）2011，Vol.33Issue(5)：104-108,5.DOI:10.3863/j.issn.1674-5086.2011.05.018
动边界复合油藏低速非达西渗流试井分析
摘要
Abstract
Low velocity and non-Darcy flow exists in low-permeability reservoirs near the wellbore. Various kinds of stimulation treatments make the physical properties of the formation and fluid surrounding and far away from the well different. Thus the vadose area of low permeability reservoir can be divided into two zones: near wellbore zone and distant wellbore zone, which make it a composite reservoir. Based on the low velocity and non-Darcy flow theory, a well testing model is established in composite reservoir with full consideration on the effect of threshold pressure gradient and dynamic boundary, and it is solved by numerical discrete method. Then the characteristic curve and the propagated rule of the dynamic boundary of the model are gained and analyzed. The results show that the pressure derivative in log-log well test plot in distant wellbore zone and near wellbore zone does not stay level, but goes upward gradually. At early stage of dynamic boundary propagate, the situation of dynamic boundary R& and the dimension time fo have a good linear relationship. In middle and late stage, R^ and to have a good linear relationship.关键词
复合油藏/低渗透/动边界/非达西/试井分析Key words
composite reservoir/ low permeability/ dynamic boundary/ non-Darcy/ well-test analysis分类
能源科技引用本文复制引用
方甲中,程林松,任胜利,廉培庆,李秀生..动边界复合油藏低速非达西渗流试井分析[J].西南石油大学学报（自然科学版）,2011,33(5):104-108,5.基金项目
国家自然科学基金项目(90210019) （90210019）
教育部新世纪优秀人才支持计划(NCET-05-0108) （NCET-05-0108）
教育部高等学校博士学科点专项科研基金(20060425001). （20060425001）
