Avizo digital rock analysis sandstone rock youtube. Permeability estimations of the porous rock properties of. Digital rock physics modeling is useful to understand microstructural parameters of rocks pores and rock matrks, quite quickly and in detail. Digital rock physics is also referred to as digital core analysis. Castagna, j, m batzle, and t kan 1993, rock physics the link between rock properties and avo response. Evolution of permeability and microstructure of tight carbonates due. Ct225kvfcb ct test analysis system is used to scan the samples. Using ct scans to compute rock properties article pdf available in ieee signal processing magazine 352. Digital energy journal vsg launches version 7 of 3d rock. Rock physics for reservoir surveillance influence of fluid flow and saturation avo and rock physical properties stress, fractures, and micro seismicity current industry practice combination of laboratory experiments and digital rock techniques rock physics for conventional oil and gas.
The rock physics handbook distills a vast quantity. Digital rock analysis example with a sandstone rock video. We are working on, derives generic pore filling theory. Poromechanics investigation at porescale using digital rock. Digital rock physics combines modern microscopic imaging with advanced numerical simulations for analysis of the physical properties of rocks, complementing laboratory investigations. Use full febased simulations with builtin solver or quick calculation of analytical bounds solid, laplace reduce effects of boundary conditions. Supplements to digital rock physics benchmarks github. In 20, we acquired vsg visualization sciences group, the leading provider of 3d software applications and. Rock physics associates consultancy and training for oil. The first step is using a mixing law the voigtreusshill average to mixed the minerals which are present in the rock. The company specialises in the application of seismic technologies to decision making in exploration and production and particularly in the application of rock physics to seismic interpretation. Ct scanners produce 3d highresolution images of micropore structures of rock samples, which can be used in digital rock physics drp. Figure 1 shows how we create our carbonate rock physics model on dry rock rock which not contained fluids. The rock physics handbook, second edition tools for seismic analysis of porous media the science of rock physics addresses the relationships between geophysical observations and the underlying physical properties of rocks, such as composition, porosity, and pore fluid content.
Fractured bedrock hydrogeologic characterization using. Interpreter can estimate seismic responses by rock physics modeling and evaluate the effect of. Digital rock provides predictive insight to oil recovery. Unconventional shale reservoirs differ largely from conventional sandstone and carbonate reservoirs in their origin, geologic evolution and current occurrence. Digital rock physics combines modern microscopic imaging with advanced numerical simula. In specific cases, it provides important insights into the interaction of porous rocks and the fluids that flow through them that would be impossible to glean in the lab. In this measurement method, highresolution digital images of the rock pores and mineral grains of selected reservoir core samples are made and analyzed. To start with, we need a representative 3d digital model of the rock, that has sufficiently high resolution in order to see the connectivity of the pore system, and contains a representative elementary volume rev of the rock. Mar 18, 2016 this is just a basic overview of the different workspaces in pergeos. More info about avizo fire for digital rock physics. One advantage of rock physics models is the ability to work with intact scanned cores. Pdf networks of large pores connected by narrower throats pore networks are essential inputs into network.
Pdf permeability plays an important role to determine the. Digital rock, pioneers in digital rock for the oil and gas. Digital rock physics drp is to numerically solve transport equations on digital representations of rock samples. Because of this inbuilt flexibility, pergeos provides the user with an adaptive environment, perfectly suited for a range of daily interactions with core samples. Textural descriptions, traditionally obtained via 2d petrographic analysis, are directly measured on 3d digital images of core material saadatfar et al. Starting from digital imaging data, the paper introduces an imagetosimulation framework. Digital rock physics complements the laboratory and field work that geologists, petroleum engineers, hydrologists, environmental scientists, and others traditionally rely on. Offsetdependent reflectivitytheory and practice of avo analysis, 1993, p 5171, doi. Xscreen and xteam enable collaborative, highresolution and immersive environments.
Velocity versus porosity left and dynamic and static bulk moduli. Any digital rock physics calculation should address these issues of resolution and anisotropy, which may a ect its accuracy, even when the microgeometry is realistic. Abstract a pilot study to evaluate the quality and validity of special core analysis sca data from digital rock physics drp has provided results that are comparable to laboratory measurements. Open inventor and the meshviz xlm extension are the underlying visualization technology in avizo wind. Pergeos software for digital rock analysis thermo fisher. This relationship is a key indication of hydrocarbon storage and.
Digital rock physics is an innovative approach for computing the properties of rocks. Pdf permeability estimation of porous rock by means of fluid. This condition reduces the feasible size of a digital sample to just a few grains across. Pdf effects of segmentation and skeletonization algorithms on. Through computer simulations, new insights into the processes going on in the rocks are retrieved and will help to understand the causes for uncommon behavior of hydrocarbon reservoirs.
Digital rock physics for fast and accurate special core analysis in carbonates 205 calculated saturation exponent n for primary drainage displacement as a function of total porosity for the ecore models compared to available experimental data. Digital rock encompasses a multidisciplinary approach involving advanced microscopy and physics combined with geology, geochemistry, petrophysics, and petroleum engineering to understand the porescale microstructure of reservoir rock. This new approach establishes the relationship between bulk rock properties and multiscale image analysis for a more holistic understanding of the effective rock properties. Pdf poromechanics investigation at porescale using digital. Users guide avizo software 2019 thermo fisher scientific.
Experimental rock mechanics testing rmt program numerical modeling of flow properties numerical modeling of mechanical properties monday, may 23, 2016 digital rock physics. Start with a seismicpetrophysical model to derive optimal elastic properties for all lithologies including nonreservoirs. Supplements to digital rock physics benchmarks authors. Avizo is the solution of choice for a range of materials science applications and settings. Avizo is an advanced 3d visualization and analysis software application for exploring and characterizing core samples and digital rock data sets. Digital rock physics and laboratory considerations on a high. Xray microcomputed tomography microct is among the emerging techniques used for digital rock physics. Jan is currently working with scott pickford in calgary, with a special enthusiasm for communicating technical concepts including avo, inversion, modeling, vsp and transfer filter processing, rock physics, and just about anything else that can be puzzling to the average bear. Solving for stress allows for the calculation of the overall elastic properties in. Ingrain integrated digital and physical core analysis provides a robust understanding of reservoir quality. Image enhancement and segmentation steps were carried out using the commercial software package avizo fire version avizo fire 9. Rock physics integrating petrophysical, geomechanical, and seismic measurements.
Solid b solid a 0 p p a k pseudodry applied stress deformed body. By understanding porescale rock features, we deliver qualitative and quantitative solutions to complex reservoir challenges. Most lab equipment for porosity and permeability testing cannot handle rocks larger than a few centimeters. Digital rock physics combines microtomographic imaging with advanced numerical simulations of effective material properties. The figure below shows the image for numerical computation of the. Computational permeability determination from pore. We invite abstracts for the following topics oral and posters.
Evaluation and application of digital rock physics drp for. Build rock physics models and calibrate them to well data. Conventional rock physics isbased on theoretical andor empirical relations under some assumptions and laboratory measurements. Integrated petrophysics and rock physics modeling is important to understand lithology, porosity and fluid effect in different scenarios and can improve reservoir characterization. Shale is a wide variety of rocks that are composed of extremely finegrained particles. Rock permeability has been regarded as a key parameter, and the accurate determination of rock permeability is essential for various engineering fields, including oil and gas industry, geotechnical and geological engineering.
This roughly divides digital rock technology into two parts. Rock physics models are combined with well log and prestack seismic data, sedimentological information, inputs from basin modelling and statistical techniques, to predict reservoir geology and. Thermo fisher scientifics oil and gas business, featuring digital rock technology and solutions, informs economic decisions by providing new insights into mechanisms that control reservoir flow throughout the lifecycle of the asset. Keywords digital rock physics computed microtomography permeability. An example of the grain partitioning of the sandstone sample is given in figure 1. Rock physics is a key component in oil and gas exploration, development, and production. We used the binseparate function of the avizo fire soft. Scanners reconstruct image projections to create a stack of images that can be exported in different formats, such as bmp, tif, or png, which then somehow need to be transformed so that the properties of the core.
Further the model virtually undergoes with coreflooding techniques with the use of advanced software to estimate experimental. Thermo scientific avizo software provides a reliable, fully automatable, customizable and easytouse solution allowing you to innovate faster, and produce more reliable and better performing materials. It is used to complement laboratory investigations with the aim to gain. As for the calculation of the elastic properties were taken from andrea et. To understand the log data patterns in a discontinuous sandstone reservoir, newfield exploration engaged feis digital rock experts to conduct a porescale wettability study with a goal to optimize primary oil production as well as to increase secondary recovery from waterflooding. Digital rock physics and laboratory considerations on a highporosity. With tools ranging from standard visualization and measurement right through to quantification, advanced image processing, analysis and reporting. Digital rock physics helps scientists understand porous.
Digital rock physics helps scientists understand porous media. Quantify scanned rock samples with an easytouse software workflow. Software application for automated acquisition of high resolution 3d images by milling and imaging serial sections with dualbeam system. Selected cub samples were prepared into polished thinsections 30 m thick for xrf elemental mapping and xanes at the celiii edge on identified ce hotspots at the stanford synchrotron radiation lightsource. Meanwhile, digital rock physics drp has received attention as a possible future alternative to laboratory core analysis. Rock physics integrating petrophysical, geomechanical. There is an amazing mix of old and new such as the historical great wall and the inspiring the birds nest.
We will show the equations and the concepts behind the theory using graphical methods. Digital rock analysis with ingrain services halliburton. Shale gas characterization and property determination by. Digital rock physics for fast and accurate special core. Avizo wind 3d analysis software for simulation data.
Rock physics associates is a ukbased independent consultancy and training business to the oil and gas industry run by dr rob simm. This document discusses the rock physics templates rpt, and how we have implemented the rpt approach in the hampsonrussell software release hrs9. Avizo offers a large set of segmentation tools, ranging from purely manual to fully. This is the second and final part of our digital rock physics drp benchmarking study. When engineers can link rock characteristics with physical processes, they are given a physical basis in which to design the completions and eorior components needed for a fields development evolution. Finally, 3d meshing of the digital coal model is carried out, and input to a multi physics coupled finite element suite. These include home, editing, filtering, segmentation, analysis, modeling, registration, visualization, and scripting. We know from laboratory work and theory that poor sorting can also in. With highly efficient, interactive, and friendly software algorithms powered by avizo and comsol multiphysics, porous rock structure can be accurately extracted and numerical simulations can be conducted, based on which existing rock models can be. By ct scanning a rock core, digital representations of the sample can be captured, and used to create digital rock physics models. Software, ranging from acquisition and imaging automation. The thermo scientific pergeos software package offers an adaptable modular architecture that is designed to allow new capabilities to be rapidly deployed as soon as they are developed.
Poromechanics investigation at porescale using digital rock physics laboratory, by s zhang. Digital rock physics core analysis using digital technology. Geo expro simplifying digital rock physics workflows. The avizo software is used to quantify and characterize the pore structure of the digital coal model, and the equivalent pnm is extracted. The drp technique applied in this study employs the. Microanalysis of rare earth elements in coal utilization. This amira avizo tutorial describes how to analyze and characterize a pore space.
A theoretical rock pore material substitution model is validated with a digital rock physics framework. The paradigm of digital rock physics is imageandcompute. While thermo fisher scientific has been a leader in industries such as electronics, life sciences, and materials science, we are also pioneers in digital rock for the oil and gas industry. These images are usually 3d digital xray microtomographic images.
Fatkhan, fourier dzar eljabbar latief 2014 digital rock physics application. Then, digital rock petrophysics drp has been adopted to obtain those. Software application for automated acquisition of high. Rock physics for the rest of us an informal discussion. The dominant minerals for carbonate rocks are usually calcite. Survey of recent advances in digital rock physics benefits of drp and their application to reservoir characterization. Mechanical properties and flow properties from nanotomography to whole core scale analysis. Petrophysics and rock physics modeling to improve seismic. Rock physics explore the link between reservoir properties and seismic data. Image processing is performed with the commercial software avizo to. We use segmented 3d images one for fontainebleau, three for berea, three for a carbonate, and one for a sphere pack to directly compute the absolute permeability, the electrical resistivity, and elastic moduli. About the authors jan dewar graduated from the university of alberta in 1981 with a b. Digital rock microstructure extracted from these high resolution images can be used to simulate coupled physics, which offer tremendous potential towards an improved understanding of physics at the porescale and beyond. Validate it in a similar framework but with more complex physics, e.
The method is based on theory proposed by dvorkin and nur 1996 and odegaard and avseth 2003. Poromechanics investigation at porescale using digital rock physics laboratory conference paper pdf available january 2011 with 99 reads how we measure reads. Digital representations of rock from ct images and physics modeling based on these pore structures provide the opportunity to further advance our quantitative understanding of fluid flow, geomechanics, and geochemistry, and the e mergence of coupled behaviors. These new approaches, in the meanwhile, introduce significant new challenges. Poromechanics investigation at porescale using digital.
Shakibayeva 1jsc tandem, 625000, 57 republic street, tyumen, russian federation 2geochemical laboratories in tyumen. Materials science electronics digital rock physics. Thermo scientific avizo software for materials science. Evaluation and application of digital rock physics drp. Drp includes ct scanning of reservoir cores to generate a virtual petrophysical model. Imaging techniques for the analysis of porous structures have revolutionized our ability to quantitatively characterize geomaterials. For numerical experimentation to find its way into the mainstream, it has to be practical and easily repeatable, i. As with many fields, computing is changing how geologists conduct their research. Amiraavizo software pore network modeling extension.
1057 94 135 280 1331 972 268 39 937 509 1463 889 857 42 1214 100 450 824 1400 884 405 336 1486 1272 902 73 525 1493 1324 1392 730 921 426 177 1008 948 862 1354 503 985 587