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首页> 外文会议>Society of Petroleum Engineers Asia Pacific Oil Gas Conference and Exhibition >Simulation Studies on the Mechanisms and Performances of MEOR Using Polymer Producing Microorganism Clostridium sp. TU-15A
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Simulation Studies on the Mechanisms and Performances of MEOR Using Polymer Producing Microorganism Clostridium sp. TU-15A

机译：利用聚合物生产微生物SP的MEOR机制和性能的仿真研究。 TU-15A

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Polymer-producing microorganism Clostridium sp. strain TU-15A was isolated from reservoir brine of Jilin Oilfield, China. TU-15A produces polymer in a molasses medium and increases the viscosity of the culture solution to 70cP by 10days cultivation. It's expected to be an effective microorganism for MEOR. In this study, a simulator was developed in order to analyze the mechanisms of MEOR using polymer-producing microorganism. The numerical model in this simulator consists of 2-phases(oil and water) and 5-components(oil, water, microorganism, nutrient and polymer). This model includes almost all processes of MEOR such as growth and death of microorganism, nutrient consumption, polymer production, water viscosity increment, improvement of the flow profile in a reservoir and enhancement of oil recovery. The validity of this simulator was shown by a comparison of both results of the numerical simulation and a flooding experiment. The quantitative change of microorganism, nutrient, polymer(water viscosity) and oil saturation were analyzed by a simulation of MEOR using polymer-producing microorganism on quarter of fivespot pattern flooding. Regarding the alteration of flow pattern in the reservoir, it was found that (1) the polymer produced by microorganism in reservoir flew into the main flow channel along the shortest way between the injection and production wells and water viscosity there increased, (2) subsequently more uniform flow profile of injected water as a postflash was established, and (3) the residual oil was mobilized to the production well. The additional oil recovery of 10% or higher was obtained at the early stage of the postflash. Our simulator will be a first comprehensive simulator for MEOR using an existing strain that produces polymer strongly. By using this simulator, the phenomena occurred in a reservoir on MEOR using a polymer-producing microorganism have been clarified and the high performance of this MEOR process have been demonstrated.
机译：生产聚合物微生物梭菌SP。菌株TU-15A从吉林油田盐水中分离出来。 TU-15A在糖蜜培养基中产生聚合物，并将培养液的粘度提高至70cp，培养。预计是Meor的有效微生物。在这项研究中，开发了一种模拟器，以便使用聚合物产生微生物来分析MEOR的机制。该模拟器中的数值模型由2阶段（油和水）和5组分（油，水，微生物，营养和聚合物组成。该模型包括几乎所有MEOR过程，如微生物的生长和死亡，营养消耗，聚合物生产，水粘度增量，储层中的流动曲线的改进和加油回收。通过比较数值模拟和洪水实验的结果来显示该模拟器的有效性。通过在四分之一的Fivespot模式洪水中，通过模拟Meor的微生物的模拟来分析微生物，营养，聚合物（水粘度）和油饱和的定量变化。关于储层中的流动模式的改变，发现（1）储层中的微生物生产的聚合物沿着注射和生产井之间的最短方式飞入主流通道，随后增加了水粘度，（2）建立了将注入水的更均匀的流动曲线成立，（3）将残留的油动员井流动。在Postflash的早期阶段获得了10％或更高的额外溢油。我们的模拟器将成为Meor的第一综合模拟器，使用现有的菌株强烈地产生聚合物。通过使用这种模拟器，已经阐明了使用聚合物生产微生物的MEOR储层中发生的现象，并且已经证明了该MEOR过程的高性能。

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