新疆石油地质

新疆石油地质 ›› 2005, Vol. 26 ›› Issue (2): 191-193.

• 油藏工程 • 上一篇    下一篇

压敏效应对低渗透砂岩气藏产能的影响

郑维师, 刘易非, 何秋轩   

  1. 西安石油大学 石油工程学院,西安 710065
  • 收稿日期:2004-05-27 出版日期:2005-04-01 发布日期:2020-08-24
  • 作者简介:郑维师(1978-),男,湖北罗田人,硕士,油田开发,(Tel)029-88382675.

Effect of Stress Sensitivity on Productivity of Low-Permeability Sandstone Gas Pool

ZHENG Wei-shi, LIU Yi-fei, HE Qiu-xuan   

  1. Instute of Petroleum Engineering, Xi'an University of Petroleum, Xi'an, Shaanxi 710065, China
  • Received:2004-05-27 Online:2005-04-01 Published:2020-08-24

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摘要： 压力敏感性对低渗透砂岩气藏的损害程度主要由储集层岩石本身的特性所决定。储集层岩石颗粒和胶结物的成分、含量、分布,储集层的孔除结构和喉道特征等因素都是影响和决定储集层压敏损害大小的内在因素。在研究低渗透砂岩气藏的压力敏感性损害过程中,利用天然岩心进行压力敏感性实验,分析实验结果,得到了绝对渗透率与有效压力之间的经验方程。以此经验方程为基础,推导了考虑压力敏感性时低渗透砂岩气藏的产能公式与压力分布公式,并进一步讨论了压力敏感性对低渗透砂岩气藏产能的影响。

关键词: 砂岩, 气藏, 效应, 产能, 压力

Abstract: One of main damage fetos in low peme bili sndsase gas pol is stes sivi. degre of which is dependen on rock's fature. The compotion, conlen, dstibuion of gains, cement, pore stucture and throat feture are all iner factors that afet and demine the size of stress sitviy. Duing the rseach of stes sesitvity damage of low pemebiltly sandsone gas pol, natural cores aroe used for the eperimental anlysi, and empirial equation beween abolute pemebliliy and alete pesure is given. Baed on this equation, the poduetvity and pessure dstibuion equatios of low pemabiltly sandstone gas pool are derived wih cnsidera tion of sres sitviy. Furthermore, the efcts of stres sesitvity on the podutivity of sandstore ges pol are dscussed.

Key words: sandstone, gas reservoir, stress sensitivity, productivity, effective pressure

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