摘要
高含水油田水驱开发过程中剩余油在空间上呈高度分散状态,层内矛盾、层间矛盾及平面矛盾突出,定流度驱油剂与非均质油层之间的矛盾仍然存在。通过调整水-气-油-化学剂分散体系的比例和分散方式,可实现对驱替系统的流度调控,达到扩大波及体积的目的,从而进一步提高高含水油田的原油采收率。模拟微小孔道,建立了微米管微分散体系流动性能评价方法,系统测试和评价了高温高压条件下处于流动状态中的分散驱替体系的表观黏度和流动阻力,为新型分散体系的研制提供了可靠的依据。
Remaining oil in high-water-cut reservoirs exists in a seriously discontinuous pattern.In oil development process,there still involves inconsistency between constant-mobility driving media and reservoir heterogeneity which encompasses plane,in-layer and interlayer heterogeneity.In order to increase sweep efficiency and improve oil recovery in high-water-cut reservoirs,the mobility of driving systems was modulated by controlling the proportion of water,gas,oil and chemical agents,or changing their dispersion texture.Evaluation method of flow characteristics of dispersed driving system was built by using micron tube to simulate pore passages.Pseudo-viscosity and flow resistance of dispersed driving systems are tested in high pressure and high temperature condition,which provides a reliable foundation for inviting novel dispersed driving systems.
出处
《科学技术与工程》
北大核心
2013年第22期6426-6429,共4页
Science Technology and Engineering
基金
国家科技重大专项(2011ZX05016)、(2011B-1109)资助
关键词
微分散
驱油体系
微米管
流动阻力
表观黏度
differential oil flooding system micron tube flow resistance apparent viscosity
