大庆石油地质与开发

1985, (03) 13-17

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上流压力对测定岩样渗透率的影响
INFLUENCE OF PRESSURE FROM UPPER STREAM ON MEASUREMENT OF PERMEABILITY OF CORESAMPLES

谢国安
Xie Guoan ;

摘要(Abstract):

在测定低渗透性岩样时,如果上流压力较小,气体在岩石孔道中流动时会产生滑脱效应,因而使测得的渗透率值偏大。而在测定中、高渗透性岩样时,如果上流压力超过某一限度,会使气体在岩石孔道中产生紊流,因而使测得的渗透率值偏小。根据对大庆油田岩心资料的分析,提出了在测定渗透率过程中应采取的技术措施。
In the measurement of properties of low permeability core samples,slip effect would occure when gas flows through pore channels within rocks, in case of less upper atream pressure, and the permeability measured is somewhat greater.For middleand-high permeability core samples, if the pressure from the upper stream is over a certain limit, permeability measured is relatively lower due to the gas turbulent flow, caused by the pressure, through pore channels within the cores. Based on the data from core analysis in Daqing Oil Field, this paper also proposes some suggestions on technical measures that should be taken during the measurement of permeability.

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作者(Authors): 谢国安
Xie Guoan ;

DOI: 10.19597/j.issn.1000-3754.1985.03.003

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