A review of experimental methods for determining the Oil‒Gas minimum miscibility pressures
A review of experimental methods for determining the Oil‒Gas minimum miscibility pressures
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DOI：
10.1016/j.petrol.2019.106366
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发表时间：
2019-12
影响因子：
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通讯作者：
Kaiqiang Zhang;N. Jia;F. Zeng;Songyan Li;Lirong Liu
中科院分区：
文献类型：
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作者：
Kaiqiang Zhang;N. Jia;F. Zeng;Songyan Li;Lirong Liu
油田混相注气工程需要准确确定最低混相压力（MMP）。实验方法通常被认为是确定MMPs的可行且合适的方法，但迄今为止很少有研究系统回顾和评估实验MMP测定方法。在这项研究中，首次对十种现有的实验方法及其三个重要的技术方面，包括实验设计、操作程序和MMP标准进行了严格的审查，以确定MMP。然后，对每个实验方法的三个技术部分从十三个因素进行具体评估和评分。在评估结果的基础上，初步制定了新颖有效的筛选表，并结合权重分析，以帮助针对不同的具体条件选择最合适的MMP实验。从之前发表的研究来看，传统的细管测试、上升气泡装置（RBA）和界面张力消失（VIT）技术仍然是MMP测定中最广泛使用的三种实验方法。本研究结果表明，细管和岩心驱替测试是 MMP 测定的最佳实验方法，其次是 RBA、VIT 技术和微流体测试。未来有关实验设计、操作程序和 MMP 标准的工作预计将改进现有的实验方法，并可能启动一种完全标准化的 MMP 测定实验方法。
An accurate determination of the minimum miscibility pressure (MMP) is required for the miscible gas injection project in oilfield. The experimental methods are usually considered to be an available and appropriate way to determine the MMPs, while so far few study has been found to systematically review and evaluate the experimental MMP determination methods. In this study, for the first time, ten existing experimental methods and their three important technical aspects, including the experimental design, operating procedure, and MMP criterion, are critically reviewed for determining the MMPs. Then, the three technical parts for each experimental method are specifically evaluated and scored from thirteen factors. On the basis of the evaluation results, a novel and effective screening table, which is coupled with the weight analysis, is initially developed to assist the selection of the most appropriate MMP experiment for different specific conditions. From the previously published studies, the conventional slim-tube tests, rising-bubble apparatus (RBA), and vanishing interfacial tension (VIT) technique are still the three most widely-used experimental methods for the MMP determinations. Results from this study indicate that the slim-tube and coreflood tests are the best experimental methods for the MMP determinations, which are followed by the RBA, VIT technique, and microfluidic test. Future work with respect to the experimental design, operating procedure, and MMP criteria are expected to improve the existing experimental methods and possibly initiate a completely standardized experimental method for the MMP determinations.