Fracture Porosity - an overview | ScienceDirect Topics
Fracture porosity: the brittle nature of carbonates leads to considerable fracturing if they are disturbed by tectonic pressure and tensile stresses after deposition. The fracture systems in compressive environments are tightly closed and hence do not contribute to porosity or permeability, but in environments that are under tension or have ...
FRACTURE POROSITY AND PERMEABILITY. METHODOLOGY FOR COMPUTING 1. FREQUENCY. The fracture frequency we considered here after, refer to the number of fracture counted along a one meter line perpendicularly to a considered set of "parallel" fractures. Such a set will also be called a fracture family.
Stress-dependent fracture porosity and permeability of fractured …
2019年9月1日 · Fracture porosity is an important parameter for coal permeability, as it represents the proportion of the coal porosity involved in Darcy's law. It is distinct from the micro-porosity of the coal matrix, where the fluid is assumed to be relatively immobile ( Connell et al., 2016 ).
New Insights into Fracture Porosity Estimations Using Machine
2023年8月29日 · Fracture porosity is crucial for storage and production efficiency in fractured tight reservoirs. Geophysical image logs using resistivity measurements have traditionally been used for fracture characterization.
How high can fracture porosity become in the ultra-deep …
2023年9月1日 · Fracture porosity can keep as high as 2.0% in relatively low in situ stress conditions even at ultra-deep burial depths. In intense in situ stress conditions (Δσ > 45 MPa), a high degree of dissolution along the fracture dramatically increases fracture porosity.
Estimation of Fracture Porosity of Naturally Fractured
2009年4月14日 · When matrix porosity of naturally fractured reservoirs (NFRs) is negligible, it is very important to know fracture porosity to evaluate reservoir performance. Because fracture porosity is highly uncertain, fractal discrete fracture network (FDFN) generation codes were developed to estimate fracture porosity.
The Impacts of Micro‐Porosity and Mineralogical Texture on …
2024年6月4日 · Geochemically driven alterations of fractures in multi-mineral media can create altered layers (ALs) at the fracture-matrix interface. Spatial variations in the AL significantly influence mass transfer across the interface, and the hydraulic and mechanical properties of the fractured medium.
The Mechanism Study of Fracture Porosity in High-Water-Cut
2024年4月16日 · A physical experimental model with fractures and high-intensity flushing is established to analyze changes in pore structure, mineral composition, residual oil distribution, and other characteristics at different positions near the fractures. The research aims to clarify the mechanism behind the formation of large channels with fracture structures.
Stress-dependence of the permeability, porosity, and ... - Springer
2021年4月11日 · Fracture permeability, porosity, and compressibility concerning effective stress are shown in Fig. 7. The results indicate that fracture opening in vertical joints enhances discharge rate, making pore pressure drop, and increases …
Multiscale relationships between fracture length, aperture, …
2008年11月18日 · Available data indicate a tendency for fracture length scales to be distributed according to a power law, average fracture aperture to be given by a power of the fracture length scale, and fracture density as well as log permeability to behave as random fractals.