石油学报 ›› 2005, Vol. 26 ›› Issue (4): 46-49.DOI: 10.7623/syxb200504009

• 地质勘探 • 上一篇    下一篇

长岭凹陷低孔砂岩孔隙度预测的一种新方法

蒲秀刚1,2, 黄志龙3, 周建生4, 肖敦清4   

  1. 1. 中国矿业大学 北京 100083;
    2. 中国石油大港油田博士后工作站 天津 300280;
    3. 中国石油大学资源与信息学院 北京 102249;
    4. 中国石油大港油田公司 天津 300280
  • 收稿日期:2004-11-10 修回日期:2005-01-17 出版日期:2005-07-25 发布日期:2010-05-21
  • 作者简介:蒲秀刚,男,1968年12月生,2004年获中国矿业大学(北京)博士学位,现为中国石油大学博士后流动站-大港油田博士后工作站在站博士后,高级工程师,主要从事石油地质勘探领域的综合研究工作.E-mail:puxg@163.com

A new method for predicting porosity of sandstone reservoir in Changling Sag of the southern Songliao Basin

PU Xiu-gang1,2, HUANG Zhi-long3, ZHOU Jian-sheng4, XIAO Dun-qing4   

  1. 1. China University of Mining and Technology, Beijing 100083, China;
    2. Working Station for Postdoctoral Scientific Research, PetroChina Dagang Oilfield, Tianjin 300280, China;
    3. Faculty of Resources and Information Technology, China University of Petroleum, Beijing 102249, China;
    4. PetroChina Dagang Oilfield Company, Tianjin 300280, China
  • Received:2004-11-10 Revised:2005-01-17 Online:2005-07-25 Published:2010-05-21

摘要: 扫描电镜和能谱分析发现,在松辽盆地南部长岭凹陷及其周缘的白垩系下统碎屑岩储集层中,钾长石溶蚀孔普遍发育,钾长石碎屑含量与储集层孔隙度呈正相关,而方解石、铁白云石等碳酸盐胶结物含量与储集层孔隙度呈负相关.利用数学地质手段进行的分析结果表明,7项碎屑岩的矿物组分参数均与孔隙度的相关性甚强,而与含油饱和度和渗透率的关系很弱,这说明碎屑岩的矿物组成对储集层孔隙度有明显的控制作用.通过多元回归分析,可以定量表达和预测矿物组分对储集层孔隙度的影响.

关键词: 砂岩储集层, 碎屑矿物组成, 孔隙度, 预测方法, 长岭凹陷

Abstract: The results of scanning electron microscope (SEM) and energy spectrum analyses displayed that there were many potash feldspar corrosion cavities in detrital sandstone reservoir of the lower Cretaceous in Changling Sag and its edge.The potash feldspar content in the south of Songliao Basin has a positive correlation with porosity of reservoir,while the contents of calcite and ankerite have a negative correlation with porosity of reservoir.The correspondence analysis indicates that seven parameters of detrital mineral combination have a strong correlation with porosity of reservoir and a poor correlation with oil saturation and permeability.It is indicated that detrital mineral combination has the obvious controlling effects over the porosity of sandstone reservoir.The multi-element regression analysis can be used to quantitatively express and predict the controlling effect of detrital mineral combination over the porosity of sandstone reservoir.

Key words: sandstone reservoir, detrital mineral combination, porosity, prediction method, Changling Sag

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