水驱油藏微观渗流机理定量描述研究

发布时间：2018-05-28 15:26

本文选题：真实岩心 + 微观水驱油　；参考：《西南石油大学》2017年硕士论文

【摘要】：微观驱替可视化模拟实验是研究油气田开发过程中储层多相流体渗流机理和规律的重要方法,通过微观驱替实验可以直观的观察到各种微观渗流现象,并可以通过实验现象与微观渗流机理相结合的方式找到现象的规律性。本文整理了国内外的有关微观模型、微观渗流驱油机理以及微观模拟渗流实验的研究现状的文献,对比分析了碎屑岩岩心和碳酸盐岩岩心的相同点和异同点,从而制定了相应的研究技术路线,并且对文中的微观模型制作及实验流程进行了简述。本文在对砂岩模型和砾岩模型进行微观水驱渗流实验研究的基础上,着重探索研究了礁灰岩的四种典型孔隙类型的微观水驱渗流机理,并为此制作了致密型礁灰岩模型、裂缝基质型礁灰岩模型、孔隙孔洞型礁灰岩模型、孔洞裂缝型礁灰岩模型来进行微观水驱渗流实验研究。每组实验都运用电子显微镜图像采集技术拍摄并记录整个实验过程中的动态图像资料,以便于后期进行数据处理和剩余油分布特征分析。文中列出了每组实验的实验流程,然后重点选取了具有代表性的图像进行微观渗流现象的分析说明,并且尽可能对实验现象进行详细的定性和定量描述。最后,再对各组模型的微观水驱渗流规律进行对比分析研究。实验研究发现:①砂岩模型和砾岩模型的微观水驱渗流过程相对于礁灰岩模型更为简单;②基质对流体在礁灰岩中渗流的影响很大;③砂岩模型和砾岩模型的剩余油主要以油膜状和斑点状的形式分布,而礁灰岩模型的剩余油主要以侵染状和附着在孔缝表面的油膜状的形式分布。本文对注水开发礁灰岩油藏具有一定的借鉴意义。
[Abstract]:The visualization simulation experiment of micro displacement is an important method to study the mechanism and regularity of multiphase fluid flow in oil and gas field development. Through microscopic displacement experiment, various microscopic seepage phenomena can be observed intuitively. The regularity of the phenomenon can be found by combining the experimental phenomenon with the microscopic seepage mechanism. In this paper, the domestic and foreign literatures about microscopic models, micro-seepage displacement mechanism and microscopic simulation seepage experiments are reviewed, and the similarities and differences between clastic cores and carbonate cores are compared and analyzed. The corresponding research technology route is worked out, and the micro model making and experiment flow are briefly described in this paper. Based on the experimental study of microscopic water drive seepage in sandstone model and conglomerate model, the microcosmic water drive seepage mechanism of four typical pore types of reef limestone has been studied in this paper, and a dense reef limestone model has been made for this purpose. Experimental study on microscopic water drive seepage is carried out by using fracture matrix reef limestone model, pore reef limestone model and pore fracture reef limestone model. In each group of experiments, the dynamic image data of the whole experiment process are captured and recorded by the electron microscope image acquisition technique, so as to facilitate the data processing and the analysis of the distribution characteristics of the remaining oil in the later stage. In this paper, the experimental flow of each group of experiments is listed, and then the representative images are selected to analyze and explain the microscopic seepage phenomenon, and the experimental phenomena are described in detail qualitatively and quantitatively as much as possible. Finally, the microscopic water-drive seepage patterns of each group of models are analyzed and compared. The experimental results show that the micro-water-drive seepage process of the Wei 1 sandstone model and the conglomerate model is more simple than that of the reef limestone model. (3) the remaining oil in sandstone model and conglomerate model is mainly distributed in the form of oil film and spots, while the remaining oil in reef limestone model is mainly distributed in the form of invasion and oil film attached to the pore surface. This paper can be used for reference in the development of reef limestone reservoir by water injection.
【学位授予单位】：西南石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE312

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