Oil recovery was improved using the tertiary amine, N,N-dimethylcyclohexylamine (DMCHA), a powerful and promissory switchable solvent, in simulated conditions similar to the Colombian crude oil reserves. Firstly, the Colombian crude oil (CCO) and the soil were characterized completely. Afterwards, an aged crude-rock system was obtained to use DMCHA that gave an oil crude extraction of 80% in our preliminary studies. Thus, a sand-pack column (soil-kaolin, 95 : 5) frame saturated with CCO was used to simulate the conditions, in which DMCHA could recover the oil. After the secondary recovery process, 15.4–33.8% of original oil in place (OOIP) is obtained. Following the injection of DMCHA, the recovery yield rose to 87–97% of OOIP. Finally, 54–60% of DMCHA was recovered and reinjected without affecting its potential in the simulated conditions.

中文翻译：

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使用N，N-二甲基环己胺对哥伦比亚原油进行化学强化采油

使用叔胺N，N可提高采油率-二甲基环己胺（DMCHA），一种功能强大且可转换的溶剂，在模拟条件下类似于哥伦比亚的原油储量。首先，对哥伦比亚原油和土壤进行了全面表征。此后，在我们的初步研究中，使用DMCHA获得了陈旧的原油-岩石系统，该原油原油的提取率为80％。因此，用充满CCO的沙堆柱（土壤高岭土，95：5）框架模拟了DMCHA可以回收油的条件。在二次采收过程之后，获得了15.4–33.8％的原油（OOIP）。注射DMCHA后，回收率提高到OOIP的87–97％。最终，在模拟条件下，在不影响DMCHA潜力的情况下，回收并重新注射了54-60％的DMCHA。