基于CT扫描的微观剩余油量化表征

发布时间：2018-07-21 18:52

【摘要】：本文基于CT扫描系统,利用VB编程平台自主研发软件系统对扫描数据进行整理分析,开发了对CT扫描结果进行三维重构的软件,并利用其对三维孔隙结构、微观剩余油进行分析,对不同类型孔隙结构及微观剩余油进行定性及定量表征,设计并建立适用于微观剩余油赋存状态的实验测试方法与软件识别方法。整理并分析岩石的三维骨架信息、孔隙形态及微观剩余油的分布情况。提出剩余油微观赋存定量统计分析方法,分析孔隙与微观剩余油赋存状态关系,给出描述微观剩余油赋存状态的定量化表征参数。并得到相应孔隙结构及剩余油的分类标准。最后利用室内岩心驱替实验整理并分析不同驱替阶段、不同位置微观剩余油分布状态。宏观剩余油与微观剩余油相结合,整理并分析不同驱替阶段、不同位置微观剩余油分布状态。形成了一套对三维CT扫描进行成像的方法,设计了一系列CT三维图像处理分析软件,并利用其对三维孔隙结构、微观剩余油进行分析,对不同类型孔隙结构及微观剩余油进行定性及定量表征,设计并建立适用于微观剩余油赋存状态的实验测试方法与软件识别方法。提出剩余油微观赋存定量统计分析方法,分析孔隙与微观剩余油赋存状态关系,给出描述微观剩余油赋存状态的定量化表征参数。得到了相应孔隙结构及剩余油的分类标准。室内实验结果表明:无论水驱还是聚合物驱替后,微观剩余油的赋存状态从连片的多孔状和体积较大的柱状逐渐油膜状、油滴状过度改变,相同层位内入口端剩余油,水驱与聚合物驱替后,连片的剩余油减少,微观剩余油的块数明显增加。
[Abstract]:In this paper, based on CT scanning system and VB programming platform, a software system is developed to sort and analyze the scanning data. A software for 3D reconstruction of CT scan results is developed, and the 3D pore structure is analyzed. The microscopic residual oil was analyzed, and the qualitative and quantitative characterization of different types of pore structure and microcosmic residual oil was carried out. The experimental test method and software identification method suitable for the occurrence state of micro residual oil were designed and established. The three-dimensional skeleton information, pore morphology and micro-residual oil distribution of rock are sorted and analyzed. A quantitative statistical analysis method for the occurrence of residual oil is presented. The relationship between pore and residual state of residual oil is analyzed, and the quantitative characterization parameters for describing the occurrence state of micro residual oil are given. The corresponding pore structure and the classification standard of remaining oil are obtained. Finally, laboratory core displacement experiments were used to sort out and analyze the micro residual oil distribution in different displacement stages and positions. Combining macroscopic residual oil with micro residual oil, the distribution of micro residual oil in different displacement stages and different positions is analyzed. A set of imaging methods for 3D CT scanning was formed. A series of software for 3D CT image processing and analysis was designed and used to analyze 3D pore structure and micro residual oil. Different types of pore structure and micro residual oil were qualitatively and quantitatively characterized, and an experimental test method and a software identification method suitable for the occurrence state of micro residual oil were designed and established. A quantitative statistical analysis method for the occurrence of residual oil is presented. The relationship between pore and residual state of residual oil is analyzed, and the quantitative characterization parameters for describing the occurrence state of micro residual oil are given. The corresponding pore structure and classification criteria of remaining oil are obtained. The results of laboratory experiments show that, after water flooding or polymer flooding, the occurrence state of micro residual oil gradually changes from porous and large columnar to oil film, oil droplet is changed excessively, and residual oil at the inlet end of the same layer is changed. After water flooding and polymer flooding, the residual oil of continuous slice decreased, and the number of micro residual oil increased obviously.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE327

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