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首页> 外文期刊>Energy & fuels >Laboratory Study of CO_2 Foam Flooding in High Temperature, High Salinity Carbonate Reservoirs Using Co-injection Technique
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Laboratory Study of CO_2 Foam Flooding in High Temperature, High Salinity Carbonate Reservoirs Using Co-injection Technique

机译:共注入技术在高温高盐碳酸盐岩油藏中CO_2泡沫驱的室内研究

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摘要

In this research, an ethoxylated amine surfactant is co-injected with CO2 in a series of coreflooding experiments at typical Middle Eastern reservoir conditions of high temperature, high salinity, and in situ foam is generated to reduce gas mobility in the absence of oil. The effects of reservoir permeability, injection rates, and foam quality on mobility reduction factor (MRF) and apparent viscosity of foam are discussed. In the absence of oil, an optimum foam quality of 80% is obtained using 1 wt % of surfactant solution. Shear thinning foams with viscosities ranging between 0.9 and 2.4 cP were formed at all velocities tested in this study. MRFs of 50 and 70 were obtained, respectively, in 70 and 240 mD cores at 80% foam quality, confirming that foam strength increases with increasing rock permeability. After determination of optimum foam quality and flow rate, a final coreflooding experiment was conducted in the presence of oil to quantify the effect of oil presence on foam generation and to observe the recovery performances of supercritical CO2 and CO2 foam for secondary and tertiary recovery injections. In the presence of oil, relatively weak foams were generated in a 50 mD core having apparent viscosities of 0.66, 1.65, and 3.29 cP at the tested co-injection flow rates of 0.2, 0.5, and 1 mL/min at 80% foam quality. A total recovery factor of 88.32% was obtained, with CO2 and CO2 foam floods contributing 79.34% and 8.98%, respectively.
机译:在这项研究中,在典型的中东储层高温,高盐度条件下,在一系列岩心驱替实验中,将乙氧基化胺表面活性剂与CO2共注入,并在没有油的情况下产生了原位泡沫,以降低气体的流动性。讨论了储层渗透率,注入速率和泡沫质量对泡沫的迁移率降低因子(MRF)和表观粘度的影响。在不存在油的情况下,使用1 wt%的表面活性剂溶液可获得80%的最佳泡沫质量。在这项研究中测试的所有速度下,形成的剪切稀化泡沫的粘度在0.9到2.4 cP之间。在泡沫质量为80%的70和240 mD岩心中分别获得了50和70的MRF,证实泡沫强度随岩石渗透率的增加而增加。确定最佳泡沫质量和流速后,在油存在下进行了最终的岩心驱替实验,以量化油的存在对泡沫产生的影响,并观察超临界CO2和CO2泡沫在二次和三次采油中的采收性能。在有油的情况下,在80%泡沫质量下,以0.2、0.5和1 mL / min的测试共注入流速,在50 mD的芯中会生成相对较弱的泡沫,其表观粘度为0.66、1.65和3.29 cP 。总回收率达到88.32%,其中CO2和CO2泡沫驱分别占79.34%和8.98%。

著录项

  • 来源
    《Energy & fuels》 |2018年第2期|1416-1422|共7页
  • 作者单位

    Khalifa Univ Sci & Technol, Petr Inst, ADNOC Res & Innovat Ctr, POB 2533, Abu Dhabi, U Arab Emirates;

    Khalifa Univ Sci & Technol, Petr Inst, ADNOC Res & Innovat Ctr, POB 2533, Abu Dhabi, U Arab Emirates;

    Khalifa Univ Sci & Technol, Petr Inst, ADNOC Res & Innovat Ctr, POB 2533, Abu Dhabi, U Arab Emirates;

    Khalifa Univ Sci & Technol, Petr Inst, ADNOC Res & Innovat Ctr, POB 2533, Abu Dhabi, U Arab Emirates;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
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