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Stress Fractures - Zenodo

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Last Updated: 07 February 2022

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Permeability of fractures in shale rocks – Influence of pressure, temperature, stress and fluid chemistry

The majority of deformation results observed during routine deformation experiments revealed mostly brittle deformation behavior, according to conscient strain rate deformation experiments conducted at p c = 50 MPa and T = 100 °C prior to fracture conductivity tests. Compared to bedding-parallel loading, peak strength was significantly higher for samples loaded perpendicular to the apparent bedding orientation. Pertuity testing was carried out on samples prepared with a saw-cut of given roughness, allowing you to determine fracture permeability with time under pre-defined p c -T- conditions using water and reservoir representative fluids. With increasing p c and, fracture permeability, k, decreases, approaching a minimum value at low p c and , possibly caused by a change from fluid flow through the entire fracture to flowing through localized channels, possibly caused by a change from fluid flow through the entire fracture. At elevated temperatures of T = 70°C and T=90°C, respectively, we discovered a higher concentration of Na + rather than Si 4+.

Source link: https://zenodo.org/record/5795721

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions