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首页> 外文期刊>Journal of Geology & Geophysics >Characterization and Quantification of the Pore Structures of the Shale Oil Reservoir Formations in Multiscale
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Characterization and Quantification of the Pore Structures of the Shale Oil Reservoir Formations in Multiscale

机译：页岩油藏地层孔隙结构的表征与定量

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摘要

Pore structures can significantly impact the mechanical and physical properties of the rock such as permeability, strength and durability. Understanding the microstructures of the rocks accurately and quantitatively is essential to petroleum engineering for evaluating and development of oil and gas, especially for the unconventional reserves with abundant interior nanoscale pores such as shale. In this paper, we studied the pore structures of rock samples from Middle Bakken Formation which is a typical unconventional reservoir in North America. High resolution SEM images of five samples were derived after sample preparation. After determining the threshold of the images, we extracted the pore spaces at various magnifications and determined the representative elementary area (REA). Then we analyzed the pore structures properties such as pore size distributions and pore shape distributions of the five samples at their representative elementary area and applied statistics analysis method to compare their distributions. After that, we analyzed their heterogeneity and isotropy properties which have been identified as an important factor affecting reservoir productivity.
机译：孔隙结构会显着影响岩石的机械和物理性能，例如渗透性，强度和耐久性。准确和定量地了解岩石的微观结构，对于石油工程评估和开发油气至关重要，特别是对于具有大量内部纳米级孔隙（如页岩）的非常规油气藏而言。在本文中，我们研究了北美典型非常规油藏中巴肯组中岩石样品的孔隙结构。样品制备后获得了五个样品的高分辨率SEM图像。确定图像的阈值后，我们以各种放大倍率提取了孔隙空间，并确定了代表性基本面积（REA）。然后，我们分析了五个样品在其代表基本面积上的孔结构性质，例如孔径分布和孔形分布，并应用统计分析方法比较了它们的分布。之后，我们分析了它们的非均质性和各向同性特性，这些特性已被确定为影响储层产能的重要因素。

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