聚表剂性能评价及驱油实验研究

发布时间：2018-02-01 18:21

本文关键词： 聚驱后聚表剂驱性能特征驱油机理波及规律　出处：《东北石油大学》2015年硕士论文　论文类型：学位论文

【摘要】：聚表剂是一种潜力非常巨大的新型的化学驱油剂,在国内外受到了广泛的关注和研究,并且已经在大庆油田部分区块开始应用,并且取得了较好的开发效果,但由于聚表剂性能、机理等方面的研究还不够完善,应用现有的技术理论难以对矿场试验中所遇到的问题给出准确的解释,仍需对其性能、驱油效果以及波及规律进行进一步的深入研究。本文通过室内实验方法,对海博聚表剂的稳定性、抗剪切性、注入能力、压力传导性等性能进行了研究,利用光刻玻璃分析了海博聚表剂的微观驱油机理,通过驱油实验优选出大庆油田一类储层条件下海博聚表剂的注入浓度为1000mg/L、注入段塞为1PV。本文针对大庆一类储层情况设计了四层非均质加厚模型和二维非均质平面物理模型,通过驱替实验获得了海博聚表剂纵向及平面上的波及规律。四层非均质加厚模型实验表明:海博聚表剂扩大了中、低渗层的波及体积,聚驱后注入1.0PV海博聚表剂可以提高采收率13.08%,驱替效果明显。二维非均质物理模型驱油实验表明:聚驱后海博聚表剂驱阶段形成了油墙,增大了渗流阻力,从而扩大了波及体积,提高了采收率,海博聚表剂提高采收率的关键是有效地动用了中低渗层。聚驱后注入1.0PV海博聚表剂可以提高采收率10.89%,提高采收率效果明显。
[Abstract]:Polymer is a new chemical flooding agent with great potential. It has been widely paid attention to and studied at home and abroad. It has been applied in some blocks of Daqing Oilfield and has achieved good development results. However, due to the performance and mechanism of the polymer is not perfect, it is difficult to explain the problems encountered in the field test by using the existing technical theory, and it is still necessary to give the performance. In this paper, the stability, shear resistance, injection ability and pressure conductivity of Haibo Polymeter are studied through laboratory experiments. The microscopic oil displacement mechanism of Haibo polymeter agent is analyzed by using photolithographic glass. The injection concentration of Haibo polymeter agent is 1000mg / L under the condition of Daqing oilfield reservoir. The injection slug is 1PV.The four-layer heterogeneous thickening model and two-dimensional heterogeneous plane physical model are designed for Daqing reservoir. The vertical and plane sweep patterns of Haibo polymer were obtained by displacement experiment. The results of four-layer heterogeneous thickening model showed that the sweep volume of Haibo polymer increased in medium and low permeability layers. Injection of 1.0 PV Haibo polymeter after polymer flooding can improve oil recovery 13.08 and the displacement effect is obvious. Two-dimensional heterogeneous physical model flooding experiments show that: after polymer flooding Haibo polymeter flooding stage formed oil wall. The seepage resistance is increased, thus the sweep volume is enlarged and the oil recovery is improved. The key to enhance recovery factor of Haibo polymeter agent is to use low and medium permeable layers effectively, and the injection of 1.0 PV Haibo polymeter agent after polymer flooding can improve the recovery efficiency of 10.89, and the effect of oil recovery is obvious.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.46

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