多孔介质中乳状液调剖效果室内实验研究
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摘要
乳状液在多孔介质中流动时,可进入注入水波及不到的孔隙通道,所以可有效驱替储层中的残余油,而且乳状液中的大乳滴通过孔隙通道时,可以起到暂堵作用,达到调剖的效果,从而进一步提高原油采收率。本文通过室内物理模拟实验,分别研究了不同粒径匹配因子与阻力系数和流度调整系数之间的关系,并对多孔介质中乳状液调剖驱油效果进行了研究。研究表明:乳状液液滴粒径与岩心孔隙直径的匹配关系越好,其调剖驱油效果越好。
In porous media,emulsion can effectively displace residual oil in reservoir because it can enter pore channels where injection water cannot reach. And the large droplets of emulsion can make profile control by plugging pore and channels, thereby further improving oil recovery. In this paper, the relationship between matching factor of particle size and resistance coefficient and the relationship between matching factor of particle size and adjustment coefficient of fluidity were researched respectively through the indoor physical simulation experiment, and the effect of profile control and oil displacement of emulsion in porous media was also researched. The results showed that the better the matching relationship between the particle size of emulsion droplets and the pore diameter of core, the better the effect of profile control and flooding.
In porous media,emulsion can effectively displace residual oil in reservoir because it can enter pore channels where injection water cannot reach. And the large droplets of emulsion can make profile control by plugging pore and channels, thereby further improving oil recovery. In this paper, the relationship between matching factor of particle size and resistance coefficient and the relationship between matching factor of particle size and adjustment coefficient of fluidity were researched respectively through the indoor physical simulation experiment, and the effect of profile control and oil displacement of emulsion in porous media was also researched. The results showed that the better the matching relationship between the particle size of emulsion droplets and the pore diameter of core, the better the effect of profile control and flooding.
引文
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[2]史胜龙,汪庐山,靳彦欣,等.乳状液体系在驱油和调剖堵水中的应用进展[J].油田化学,2014,31(1):141-145.
[3]AVEYARD R,BINKS B P, Clint J H. Emulsions stabilized solely by colloidal particle[J]. Adv Colloid Interf Sci,2003(100-102):503-546.
[4]Soo H,RADKE C J. Velocity effects in emulsion flow through porous media[J]. Colloid Interf Sci,1984,102(2):462-476.
[5]闫建文,张玉荣,才程.适用于高矿化度地层调剖剂实验研究[J].油气地质与采收率, 2009, 16(6):70-72.
[6]赵洪波,赵海峰.胶体与表面化学理论及应用研究[M].哈尔滨:黑龙江大学出版社,2016.
[7]王凤琴,曲志浩,孔令荣.利用微观模型研究乳状液驱油机理[J].石油勘探与开发,2006,33(2):221-224.
[8]刘伟,刘琴,王坚.原油乳状液稳定性影响因素研究的新进展[J].油气田地面工程,2012,31(10):28-30.
[9]曹广胜,杨晓雨,张志秋,等.活性原油乳化性能的影响因素研究[J].当代化工,2017,46(7):1290-1292.
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