石油学报 ›› 1997, Vol. 18 ›› Issue (1): 39-43.DOI: 10.7623/syxb199701007

• 地质勘探 • 上一篇    下一篇

盖层烃浓度封闭能力评价方法探讨

付广, 姜振学, 庞雄奇   

  1. 大庆石油学院
  • 收稿日期:1995-06-28 修回日期:1996-01-10 出版日期:1997-01-25 发布日期:2010-09-06
  • 作者简介:付广,1984年毕业于大庆石油学院石油地质专业。现为大庆石油学院勘探系副教授。通讯处:黑龙江省安达市。邮政编码:151400。

AN ESTIMATION OF SEALING ABILITY OF HYDROCARBON CONCENTRATION OF CAP ROCKS

Fu Guang, Jiang Zhenxue, Pang Xiongqi   

  1. Daqing Petroleum Institute
  • Received:1995-06-28 Revised:1996-01-10 Online:1997-01-25 Published:2010-09-06

摘要: 在深入研究盖层烃浓度封闭机理的基础上,根据费克定律,通过计算在假设外加浓度差作用下通过盖层的扩散速度大小,建立了盖层烃浓度封闭能力评价指标CHSI.应用于大庆长垣及其西部地区盖层评价中,其结果表明该方法不仅可以定量评价盖层的烃浓度封闭能力,而且可以把盖层的评价扩展到平面上。这是一种可行的盖层烃浓度封闭能力评价方法。

关键词: 盖层, 烃浓度, 封闭能力, 天然气, 扩散, 评价, 方法

Abstract: Based on detailed research of the hydrocarbon concentration sealing mechanism, the evaluation index of hydrocarbon concentration sealing ability of caprock by calculating gas diffusive velocity through caprock under the action of supposed hydrocarbon concentration was established by Fick's law, it's also applied to the caprock evaluation of Daqing Placantidine and its western area.This result indicates that this method not only evaluate hydrocarbon concentration sealing ability of caprock quantitatively, but also evaluated caprock in the plane.It is a practicable method for evaluating the hydrocarbon concentration sealing ability of caprock.

Key words: caprock, hydrocarbon concentration, sealing ability, natural gas, diffusion, evaluation, method