一种流度调控剂的合成及其在孤东油藏的适应性研究

目的针对胜利油田孤东油藏现场深部调驱段塞试验效果不理想、油藏适应性差的问题,开发具有良好油藏适应性的高效流度调控剂。方法以丙烯酰胺和十六烷基烯丙基二溴化四甲基乙二铵(CDAD)为共聚单体,通过水溶液自由基聚合法合成了一种流度调控剂,采用FTIR和^(1)H-MNR确认了调控剂分子结构,结合黏度、动态光散射、Waring剪切、岩心流动等测试系统地研究了流度调控剂的油藏适应性。结果在优化确定的最佳反应条件(单体总质量分数为25%、氧化还原型复合低温引发剂(DW-A+DW-B)质量浓度为80 mg/L、pH值为8、尿素质量分数为0.5%)下合成的流度调控剂HAWSP-1具有良好的油藏适应性,当质量浓度为2000 mg/L时,黏度可达238.3 mPa·s,高速剪切后黏度保留率大于83%,当质量浓度为400 mg/L时,主要粒径分布在2.30~7.50μm,在渗透率为700×10^(-3)μm^(2)的岩心上建立较高阻力系数与残余阻力系数的同时,呈现出较低的动态滞留量(256.62μg/g),在平均渗透率为2500×10^(-3)μm^(2)的3层非均质岩心驱油实验中,可提高采收率20.25%。结论引入疏水单体,通过对分子结构的设计与合成条件的优化,可明显提升流度调控剂的溶液性能,还可在保证注入性的前提下呈现较好的非均质调驱性能,在非均质高含水油藏深部调驱中具有重要的参考和推广意义。

稠油油藏聚合物驱及流度调控机理研究进展

我国稠油储量40亿t,是我国油气资源的重要组成。目前常用的蒸汽吞吐开采采收率不到20%,为实现能源安全,亟需实现技术变革,而化学冷采驱油是实现技术变革的途径之一。因此,在介绍稠油的基本性质及其开采方法基础上,重点综述了冷采用聚合物在稠油油藏中的应用现状和两亲聚合物驱流度调控机理研究进展,指出了稠油冷采聚合物驱中出现的问题和未来的发展趋势。

Material flow control technology of ironmaking and steelmaking interface

In order to achieve higher efficient cohesion match of procedure and equipment between ironmaking and steelmaking interface, the theory of multi-dimensional material flow control was applied to analyze torpedo ladle-iron ladle transportation process between blast furnace and basic oxygen furnace. Moreover, basic parameters of material flow were analyzed and optimized, such as time, temperature and material quantity. Based on operating principles of material flow, control methods were optimized, such as product organization mode, scheduling discipline and scheduling plan of hot metal ladle. Finally, the material flow control technology of ironmaking and steelmaking interface was integrated. Satisfactory effects are obtained after applying the technology in practice. The total turnover number of torpedo ladle decreases from 20 to 18, the hot metal temperature of 1# BF torpedo ladle decreases from 36 °C to 19.5 °C, the hot metal temperature of 2# BF torpedo ladle decreases from 36.6 °C to 19.8 °C, the temperature drop of desulfurization hot metal decreases by 4 °C, and the temperature drop of non-desulfurization hot metal decreases by 2.8 °C. Furthermore, the ironmaking and steelmaking interface system will realize high-efficiency control by using this control technology.