Abstract In order to study the effect of micro‐CT scan resolution and size on accuracy upscaled digital rock property estimation core samples Bentheimer sandstone images with varying from 0.9 μm 24 are used. We statistically show that correlation length pore‐to‐matrix distribution can be reliably determined for finer than 9 voxels per representative volume this is about 15 3 length. Similar values also valid total porosity, specific surface area, mean curvature, topology pore space. Only...

The statistical analysis of fault attributes scaling relationships is discussed. Dependences length, width damage zone and thickness core on displacement were studied assuming power law relations. approximation forms a piecewise‐linear function with few slopes in log‐log scale. Bayesian Information Criterion (BIC) was used to find the best fit for an optimal number parameters. Numerical tests show that obtained when using relations two slopes. model parameters' probability distribution...

Abstract Cataclastic deformation bands, which are common in sandstone reservoirs and may negatively affect fluid flow, generally associated with notable thickness variations. It has been suggested previously that such variations represent an important control on how bands flow. The effects of tested this study though statistical analysis flow simulation array cataclastic Cretaceous sandstones the Bassin de Sud‐Est Provence, France. Spatial outcrop data statistically analyzed for...

Faults play a key role in reservoirs by enhancing or restricting fluid flow. A fault zone can be divided into core that accommodates most of the displacement and surrounding damage zone. Interpretation seismic data is method for studying subsurface features, but internal structure properties zones are often at limit resolution. We have investigated response vertical model sandstone, populated with facies based on deformation band distributions. Deformation bands reduce porosity they...

ABSTRACT We have studied three‐dimensional fault geometries through a geologically integrated analysis of seismic attribute volumes. used series coherence (semblance) and filtered volumes with parameters optimised for imaging faults in the Fault geometric attributes such as along strike segment length displacement were measured on attributes. The scaling relationships using statistical methods Bayesian information criterion, likelihood ratio test, bootstrap method. Univariate distributions...

Interpretation of seismic responses from subsurface fault zones is hampered by the fact that geologic structure and property distributions can generally not be directly observed. This shortcoming curtails use data for characterizing internal properties zones, it has instead promoted interpretation techniques tend to simplify actual structural complexity rendering faults as lines planes rather than volumes deformed rock. Facilitating correlation rock images would enable active these...

A full fault analysis assessing the influences of faults on (hydrocarbon) prospects and fluid communication includes geometry, architecture segment linkage, assessment petrophysical properties as well establishment time-related geological development. It is also crucial to realize that are three-dimensional rock bodies, rather than surfaces (Chester Logan, 1986; Caine et al., 1996; Gabrielsen Braathen, 2014; 2016a). Basic data for such study commonly derived from seismic interpretation...

Stochastic models and Monte Carlo algorithms for simulation of flow through porous media beyond the small hydraulic conductivity fluctuation assumptions are developed. The is modelled as an isotropic random field with a lognormal distribution prescribed correlation or spectral functions. It sampled by method based on randomized representation. Darcy continuity equations solved numerically, using successive over relaxation in order to extract statistical characteristics flow. Hybrid averaging...

Abstract The seismic oceanography method is based on extracting and stacking the low-frequency acoustic energy scattered by ocean heterogeneity. However, a good understanding how this wavefield affected physical processes in still lacking. In work an waveform modeling inversion developed applied to both synthetic real data. example, temperature field simulated as homogeneous Gaussian isotropic random with Kolmogorov–Obukhov spectrum superimposed background stratified structure. presented...

A workflow for recovering fracture network characteristics from seismic data is considered. First, the presented discrete modeling technique properly describes models on scale. The key procedure of 3D diffraction imaging based spectral decomposition different combinations selective images. Selective images are obtained by prestack asymmetric migration procedure, whereas occurs in Fourier domain with respect to spatial dip and azimuth angles. At final stage, we performed a topological...

The problem of subsalt imaging in the presence salt-boundary uncertainty is considered. In this case, salt-body model should be considered by a probability density function rather than unique deterministic function. We discuss way to look at seismic using path-integral concept. method computes image summing contributions individual images computed for different statistical realizations boundaries. It samples instead relying on only one derived from manual or automatic picking. focusing...

This work deals with the stochastic flow simulation in statistically isotropic and anisotropic saturated porous media 3D case. The hydraulic conductivity is assumed to be a random field lognormal distribution. Under assumption of smallness fluctuations we construct Eulerian model for incompressible as divergenceless Gaussian spectral tensor special structure derived from Darcy's law. A randomized representation then used simulate this field. Numerical results are compared analytical obtained...