彭昱强;何顺利;郭尚平;韩冬;

• 1:中国石油大学石油工程教育部重点实验室

• 2:中国石油大学气体能源开发技术教育部工程研究中心

• 3:中国石油勘探开发研究院

摘要(Abstract)：

针对国产露头砂岩与Berea砂岩存在差异,分析国产露头砂岩的渗吸特点和规律,研究亲水砂岩渗透率对盐水自发渗吸规律和采收率的影响,对比不同渗吸数学模型的预测结果.结果表明,渗透率低于800×10-3μm2时,随着砂岩渗透率增加,盐水渗吸采收率逐渐升高,但是增速变慢;渗透率高于800×10-3μm2时,渗吸采收率趋于稳定或稍有下降.高渗条件下,毛管力对盐水渗吸的贡献变弱;渗透率越小,渗吸采收率增速越快,低渗储层开发中应注重发挥渗吸作用.由于渗吸过程的复杂性和多因素影响,已有渗吸数学模型不能较好地描述渗吸规律.

关键词(KeyWords)：自发渗吸;露头砂岩;渗透率;渗吸采收率;亲水

Abstract:

Keywords:

基金项目(Foundation):国家“973”重大基础研究项目(2005CB221300)

作者(Author):彭昱强;何顺利;郭尚平;韩冬;

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参考文献(References)：

• [1]韩冬,彭昱强,郭尚平.表面活性剂对水湿砂岩渗吸规律和采收率的影响[J].中国石油大学学报:自然科学版,2009,33(6):142-147.

• [2]彭昱强,韩冬,郭尚平,等.无机盐对亲水砂岩化学渗吸的影响[J].特种油气藏,2009,16(5):71-75.

• [3]Al-Lawati S,Saleh S.Oil recovery in fractured oil reservoirs by low ift imbibition process[R].SPE36688,1996:107-118.

• [4]Du Prey.Gravity and capillary effects on imbibition in porous media[R].SPE6192,1978:195-206.

• [5]Zhou X,Morrow N R,Ma Shouxiang.Interrelationship of wettability,initial water saturation,aging time,and oil recovery by spon-taneous imbibition and waterflooding[R].SPE/DOE 35436,1995:325-339.

• [6]Xie X,Morrow N R.Oil recovery by spontaneous imbibition from weakly water-wet rocks[R].Petrophysics,2001,42(4):313-322.

• [7]Nurkamelia,Arihara N.Analysis of spontaneous capillary imbibition for improved oil recovery[R].SPE88498,2004:1-12.

• [8]Akin S,Kovscek A R.Imbibition studies of low-permeability porous media[R].SPE54590,1998:1-11.

• [9]汪伟英,张公社.束缚水饱和度、岩石性质对渗吸的影响[J].石油学报,2000,21(3):66-69.

• [10]刘卫东,姚同玉,刘先贵,等.表面活性剂体系渗吸[M].北京:石油工业出版社,2007.10:15-17,34-37.

• [11]Mattax C C,Kyte J R.Imbibition oil recovery from fractured,water-drive reservoir[R].SPE187,1962:177-184.

• [12]Zhang X,Morrow N R,Ma Shouxiang.Experimental verification of a modified scaling group for spontaneous imbibition[R].SPE30762,1995:617-631.

• [13]Handy L L.Determination of effective0 capillary pressures for porous media from imbibition data[R].SPE1361-G,1960:75-80.

• [14]Babadagli T,Zeidani K.Evaluation of matrix-fracture imbibition transfer functions for different types of oil,rock and aqueous phase[R].SPE89450,2004:1-8.