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首页> 外文期刊>RSC Advances >Laboratory simulation of microbial enhanced oil recovery using Geobacillus toebii R-32639 isolated from the Handil reservoir
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Laboratory simulation of microbial enhanced oil recovery using Geobacillus toebii R-32639 isolated from the Handil reservoir

机译：使用从汉迪尔油藏中分离出的Toebii Geobillus R-32639微生物提高采收率的实验室模拟

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摘要

Microbial enhanced oil recovery (MEOR) is a biological based technology to enhance crude oil (CO) recovery at old oil wells by manipulating function or structure or both of the microbial environments existing in oil reservoirs. Even if many biosurfactant-producing microbes can be found in different environments, the ability of Geobacillus toebii R-32639 to enhance CO recovery needs to be verified. In this study, artificial cores (ACs) are used to simulate the application of MEOR by three scenarios of injecting nutrients, microbial culture and bioproducts. The use of Geobacillus toebii R-32639 as biosurfactant producer enables a lowering by 25.3% of interfacial tension and by 14.1% of CO viscosity and also enables the degrading of a 7.4-28.8% fraction of (C-12-C-34) hydrocarbons after 7 days of incubation. The injection of microbial culture into a laboratory-scale CO reservoir of the AC for the desirable purpose of enhanced oil recovery could feasibly achieve an average recovery factor of 14.27% but lower by 5.50% the AC porosity and by 91.0% the AC permeability; this is the best-case scenario of the microbial core flooding (MCF) experiments. The simulation of MEOR by using bacterial strains of Geobacillus toebii R-32639 provides valuable insight into the use of MCF experiments to obtain greater oil production from existing reservoirs.
机译：微生物强化采油（MEOR）是一项基于生物的技术，可通过操纵油藏中存在的微生物的功能或结构或两者来提高旧油井中的原油（CO）采收率。即使可以在不同的环境中找到许多生产生物表面活性剂的微生物，也需要验证Toebii土杆菌R-32639提高CO回收率的能力。在这项研究中，通过注入营养物，微生物培养物和生物产品的三种方案，使用人造岩心（AC）来模拟MEOR的应用。使用Toebii R-32639作为生物表面活性剂生产商可以降低25.3％的界面张力和14.1％的CO粘度，还可以降解7.4-28.8％的（C-12-C-34）碳氢化合物孵育7天后。为了提高采收率的理想目的，将微生物培养物注入实验室规模的AC CO储层中，可实现平均采收率14.27％，但AC孔隙率降低5.50％，AC渗透率降低91.0％;这是微生物岩心驱替（MCF）实验的最佳情况。通过使用Toebii细菌R-32639的细菌菌株对MEOR进行模拟，可以为使用MCF实验从现有油藏中获得更大的石油产量提供有价值的见解。

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