This article presents a method for simulation of continuous and discrete fracture parameters distributions in hydrocarbon reservoirs using Sequential Indicator Simulation (SIS) and Sequential Gaussian Simulation (SGS) methods. Fracture parameters including azimuth, dip and density are integrated with the porosity and permeability values determined in the models. Based on this study we have iden...

Abstract As a commonly used and effective technology for increasing the permeability of coal–rock reservoirs, hydraulic fracturing has been widely in engineering sites to realize efficient exploitation utilization gas resources reservoirs. The core is initiation, propagation, path cracks. In this paper, combination true triaxial physical test numerical simulation study influence coal bedding ch...

Chang 8 oil deposit, developed in Hohe and Jihe oil fields at the southern Yi-Shan Slop of Ordos Basin, is regarded as a kind of typical sand reservoir formation with super-low porosity, poor permeability, strong anisotropy as well as locally natural faults and fractures. The previous studies believed that matrix reservoir has a good permeability, whereas fracture reservoir has a reverse manner...

The sealing ability of caprock is affected by many factors, such as cap thickness, displacement pressure, fracture development, and lithology caprock. Shale one the ideal materials for oil gas formation due to its low porosity permeability. Microfractures can destroy property shale When buried deep enough, will change from toughness brittleness. In general, greater brittleness shale, more devel...

To investigate the anisotropy of coal swelling, this study proposes an effective stress model for saturated, adsorptive fractured porous media by considering gas adsorption induced surface change on solid-fluid interface. The can be used to capture anisotropic swelling combining mechanical properties and link with permeability. Direction dependent fracture compressibility is describe evolution ...

Wave-induced fluid pressure diffusion (FPD) represents an important mechanism of seismic energy dissipation in fractured media. The associated effects on wave propagation are typically studied considering idealized fracture geometries. Here, we study fracture-geometry-related FPD by numerically computing the frequency-dependent and angle-dependent velocity attenuation models having fractures re...

Fractured reservoirs are highly heterogeneous in both matrix and fracture properties, which results significant variations well production. Assessing quantifying the influence of fractures on fluid flow is essential for developing unconventional reservoirs. The complicated effects fractured depend geometry, distribution, can be reflected pressure transient testing. biggest challenge lies deline...

This work shows the observed changes in sample permeability and fracture geometry that occur within a fractured piece of low permeability shale with different effective stress gradients applied to the plug sample. These observations were made using an in-situ micro-CT fluid flow imaging apparatus with a carbon fibre Hassler-type core holder. Changes within the preferential fluid flow path under...

The influence of cross-section shape on rock stability was investigated by designing a similar model test and numerical simulation using particle flow code (PFC). results showed that the left- right-hand sides entrance are subjected to tension, mainly forming vertical cracks or oblique with large dip angle. vicinity is shear effect overall failure brittle in test. Mesoscopic fractures appear as...