石油学报 ›› 1992, Vol. 13 ›› Issue (3): 52-61.DOI: 10.7623/syxb199203008

• 油气田开发 • 上一篇    下一篇

风化店油田火山岩油藏微观模型自吸水驱油研究

曲志浩1, 孙卫1, 倪方天1, 唐国庆2, 陈智宇2   

  1. 1. 西北大学;
    2. 大港油田
  • 收稿日期:1990-07-31 出版日期:1992-07-25 发布日期:2013-07-08
  • 作者简介:曲志浩,1935年生.1960年毕业于莫斯科石油学院地质系.现为西北大学地质系副教授.通讯处:陕西省西安市西北大学地质系.邮政编码:710069

A STUDY OF OIL DISPLACEMENT BY WATER IMBIBITION USING A MICROMODELS FOR AN ANDESITE RESERVOIR IN FENGHUADIAN OIL FIELD HUANGHUA BASIN

Qu Zhihao1, Sun Wei1, Ni Fangtian1, Tang Guoqing2, Chen Zhiyu2   

  1. 1. Northwestern University;
    2. Dagang oil field
  • Received:1990-07-31 Online:1992-07-25 Published:2013-07-08

摘要: 黄骅坳陷南区风化店油田是一个具有双重孔隙介质的中生界火山岩(安山岩)油藏,孔隙和裂缝均比较发育.为了研究本区火山岩油藏的注水开发效果,作者利用安山岩光刻复制微观孔隙模型进行了自吸水驱油实验,研究了自吸水驱油机理、同向自吸和逆向自吸、润湿程度和注水速度对水驱油的影响,提出了活塞式和非活塞式两种水驱油方式,并分析了驱油方式的影响因素.在此基础上,提出了风化店火山岩油藏进一步开发的建议.

关键词: 火山岩油气藏, 双重介质, 微观结构, 模型, 自吸水, 驱油机理

Abstract: In order to understand the behavior of oil recovery by water flooding form the Mesozoic andesite reservoir in Fenghuadian oil field Huanghua basin which is a fractured-matrix reservoir(double porosity medium),oil displacement by water imbibition were performed on a glass covered micromodel reproduced from an andesite section.Major conclusions are:(1)there are two types of oil displacement by water imbibition-pistonlike and nonpistonlike,and the latter occurs mainly in fractures,pores and larger throats with a radius of larger thanl5-20μm and is one of the important reasons causing trapping of residual oil in pores;(2)the amount of non-pistonlike displacement will be decreased,if the water flooding pressure is increased;(3)the stronger the water-wet is; the more the non-pistonlike displacement will occur however,the andesite reservoir studied is weakly water-wet and the rate of water imbibition is slow,consequently pistonlike displacement will occur in most of the pores and fractures;(4)the rate of countercurrent imbibition is very slow and its displacement efficiency is low;(5)the residual oil saturation caused completely by water imbibition is less than that of displacement by water under pressure; and(6)for the above-mentioned analysis a slow rate flooding or periodic flooding technique are suggested for this region in order to avoid countercurrent imbibition.