Effects of Temperature on Crude-Oil-Rock-Brine Interactions During Controlled Salinity Biosurfactant Flooding

Day 2 Tue, August 06, 2019 Pub Date : 2019-08-05 DOI:10.2118/198761-MS

Tinuola Udoh, J. Vinogradov

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引用次数: 6

Abstract

The effect of temperature and brine composition on Crude-Oil-Rock-Brine (CORB) interactions during controlled salinity brine and biosurfactant injection process were investigated and reported in this study. Comprehensive core flooding experiments were carried out using formation brine, controlled salinity brine and combined controlled salinity biosurfactant brine injection in carbonate core samples at 23 °C and 70 °C. Effluent analyses and oil recovery from each flooding experiment were used to interpret the temperature and brine composition effect on the CORB interactions. The results of this study show that increased temperature makes no significant impact on CORB interactions during high salinity brine flooding. Increased temperature however, enhances CORB interactions through increased reactivity during controlled salinity brine and controlled salinity biosurfactant brine flooding thereby, resulting in increased oil production. Furthermore, the results of this study demonstrated the enhanced oil recovery potential of combined controlled salinity brine and biosurfactant application in condition relevant to hydrocarbon reservoirs.

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控盐生物表面活性剂驱油过程中温度对原油-岩石-盐水相互作用的影响

研究了控盐盐水和生物表面活性剂注入过程中温度和盐水组成对原油-岩石-盐水相互作用的影响。在23°C和70°C条件下，对碳酸盐岩岩心样品进行了地层盐水、控盐度盐水和联合控盐度生物表面活性剂盐水注入的综合岩心驱替实验。利用每次驱油实验的流出物分析和采收率来解释温度和盐水成分对CORB相互作用的影响。研究结果表明，在高矿化度盐水驱过程中，温度升高对CORB相互作用没有显著影响。然而，升高的温度通过在控制盐度的盐水和控制盐度的生物表面活性剂盐水驱油过程中增加反应性来增强CORB的相互作用，从而提高石油产量。此外，研究结果还表明，在油气藏相关条件下，控制盐度盐水与生物表面活性剂联合应用具有提高采收率的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Day 2 Tue, August 06, 2019

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