低渗透碳酸盐岩稠油油藏岩石渗吸试验研究  

Experimental Studies on Core Imbibition of Low Permeability Heavy Oil Carbonate Reservoirs

作　　者：孙仁远[1] 马自超 范坤坤 张建山 徐婷[2] 曹立迎[2] 杨森[2] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266580 [2]中石化石油勘探开发研究院,北京100083

出　　处：《石油天然气学报》2014年第1期88-91,7,共4页Journal of Oil and Gas Technology

基　　金：国家科技重大专项(2011ZX05031-002-007HZ);长江学者和创新团队发展计划项目(IRT1294)

摘　　要：岩心自发渗吸对提高低渗稠油油藏采收率具有重要意义。采用自吸排油试验方法,对低渗透碳酸盐岩岩心开展了不同条件下的渗吸试验,研究了影响岩心渗吸的因素及影响程度。研究表明:对于低渗透碳酸盐岩稠油油藏,岩心渗吸采出程度受到低渗透率、高原油黏度及润湿性的影响,采出程度在10%以内;对于同一口取心井,渗透率对岩心渗吸影响较大,渗透率越大,岩心渗吸采出程度越高;当岩心渗透率很低时,原油黏度对渗吸的影响程度较小,随着渗透率的增加,原油黏度对渗吸的影响程度增加;在渗透率相近的情况下,岩心的水湿程度越高,渗吸最终采出程度越高。The imbibition of rock core was of great significance for improving oil recovery factor.By using self-adsorption and oil expulsion method,a series of core imbibition experiments were conducted in different conditions,the factors effect on oil recovery including were studied.Study shows that the imbibition recovery factor is influenced by low permeability,high viscosity and wettability,the recovery percent is within 10%;For the same coring well,the permeability has great effect on the core imbibition,the higher the permeability of the core is,the higher the imbibition recovery is.When the permeability is very low,the influence of oil viscosity is less,the influence increases with the raising of permeability.When the permeability is similar,the higher wettability is,the higher the ultimate recovery of imbibition would be.

关 键 词：低渗透油藏 碳酸盐岩油藏 稠油油藏 渗吸试验 润湿性 

分 类 号：TE311[石油与天然气工程—油气田开发工程]