Aug 22, 20 the hess digital rock physics laboratory includes the most advanced highresolution 3d xray microscope available, making uw the worlds first university to put this stateoftheart tool in the hands of faculty and researchers to increase understanding of underground oil and natural gas reservoirs. An example of the grain partitioning of the sandstone sample is given in figure 1. Experimental systems are available to perform analysis on a wide variety of parameters as the research area might warrant. With the advent of robust fineresolution 3d imaging capability and software and hardware availability, digital rock physics is set to be a gamechanger. We provide a new tool for quantitative interpretation of seismic data. Rock properties are determined either through physical core analysis in a laboratory or by numerical core analysis on a computer, also called digital rock.
In recent years the development of micro xrayct approaches to petrophysical property prediction has made large advances. Petrophysics from the greek, petra, rock and, physis, nature is the study of physical and chemical rock properties and their interactions with fluids. Pdf on the path to the digital rock physics of gas. Use our software to reduce uncertainty in prediction from seismic amplitudes. Rock physics provides the understanding and theoretical tools required to optimize all imaging and characterization solutions based on elastic data. Rock physics explore the link between reservoir properties and seismic data. The method combined with rock physics can be powerful tools for determining rock properties from small rock fragments. Supplements to digital rock physics benchmarks authors. It will be located at china university of petroleum digital rock physics 2016 will be the worlds popular. Popularly called digital rock physics, this research framework can inform important decisions in environmental, civil and petroleum engineering, as well as address key geological questions. Each of my students is expected to read and abide by the course expectations for this course. The drp technique applied in this study employs the. Organize and preserve images and related experimental measurements of different porous materials, improve access to them for a wider community of geosciences and engineering researchers not necessarily trained in computer science or data analysis, and thus.
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. Rock physics for the rest of us an informal discussion. Simpleware for digital rock physics 3d image processing and meshing software simpleware provides software solutions for digital rock physics and rock typing. Mail assure offers near 100% filtering accuracy with data from over two million domains.
Industrial applications of digital rock technology request pdf. Our new paper on the elastic anisotropy of rockforming minerals has been published in solid earth coauthors nick timms and mark pearce. The method is based on theory proposed by dvorkin and nur 1996 and odegaard and avseth 2003. This document discusses the rock physics templates rpt, and how we have implemented the rpt approach in the hampsonrussell software release hrs9.
International symposium on digital rock physics and applications, to be held from 30 mar to 31 mar 2016 the society of core analysts and european association of geoscientists and engineers invites you to beijing, for its international symposium on digital rock physics and applications. The hess digital rock physics laboratory includes the most advanced highresolution 3d xray microscope available, making uw the worlds first university to put this stateoftheart tool in the hands of faculty and researchers to increase understanding of underground oil. Digital rock physics 2016 will be the worlds popular meeting for presenting and acquiring the most recent data about natural resources, petroleum, oil and digital rock physics. A computer animation produced by exa and bp shows how petroleum engineers can use rock sample simulations to test ideas on how to remove residual oil. We will show the equations and the concepts behind the theory using graphical methods. In this approach, also commonly called digital rock physics drp in the oil and gas industry, transport properties of rocks, such as absolute intrinsic. Rock physics technology as is a digital oilfield service company based in bergen, norway. Simplifying digital rock physics workflows geo expro. Hess digital rock physics lab brings worldclass focus to oil. Simpleware provides software solutions for digital rock physics and rock typing. Geo expro simplifying digital rock physics workflows. Digital rocks physicists typically perform computed tomography ct scans of rock samples and then reconstruct the materials internal structure using computer software. Rock physics technology as rpt is a digital oilfield service company based in norway. Use simpleware software s comprehensive 3d image processing software interface to easily visualize, segment and quantify scan data ct, microct, fibsem.
We used the inhouse mango software detailed in 8 for these steps, illustrated for one sample. Learn vocabulary, terms, and more with flashcards, games, and other study tools. According to this theory, the universe can be conceived of as either the output of a deterministic or probabilistic computer program, a vast, digital computation device, or. As with many fields, computing is changing how geologists conduct their research.
Information and documents that will be helpful as we start the class, and as the year progresses. Ctscan used to determine value rock properties and pore structure at the microscale and visualize the shape of the pores of rock samples in 3d. We know from laboratory work and theory that poor sorting can also in. This is the second and final part of our digital rock physics drp benchmarking study. Thanks to the ctr and the petrophysics lab at repsol digital petrophysics team. About the authors jan dewar graduated from the university of alberta in 1981 with a b. The present site is a collection of resources for rock physicists and those who use the results of rock physics in their work. This condition reduces the feasible size of a digital sample to just a few grains across. Eagesca international symposium on digital rock physics and applications.
Petrophysics from the greek, petra, rock and, physis, nature is the study of physical and chemical rock properties and their interactions with fluids a major application of petrophysics is in studying reservoirs for the hydrocarbon industry. Digital rock physics for fast and accurate special core analysis in. Run what if rock physics scenarios with monte carlo simulation. Organicrich carbonates i have been dealing with rock physics analysis of an organicrich chalk, and there is a new approach that we are trying to extrapolate to organicrich carbonate formations e. Shortly after posting the rock physics cheatsheet, i got a request to quote the equations for the elastic parameters as a function of pwave slowness, and swave slowness. Digital sandstone rock analysis scanned with highresolution xray computed tomography duration. According to this theory, the universe can be conceived of as either the output of a deterministic or probabilistic computer. Maplesoft provides the essential math environment for scientific research. Rock properties are determined either through physical core analysis in a laboratory or by numerical core analysis on a computer, also called digital rock physics. 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. Therefore, we propose a new python opensource toolbox called varpy1 to facilitate rapid application development for rock physicists and volca.
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. We apply digital rock physics to reticulite, a natural mineral with a strong. Our research is funded by an affiliates group of energy companies, the us department of energy, the national science foundation, gcep, and the usgs. In 20, we acquired vsg visualization sciences group, the leading provider of 3d software applications and components for the. Supplements to digital rock physics benchmarks github. I am looking for publications in which acoustic velocities, organic content, porosity and density are reported, in order to examine. Digital rock physics drp investigates and calculates the physical and fluid flow properties of porous rocks. A modern method to acquire images of pore geometries is the microscale xray computed tomography. There is an amazing mix of old and new such as the historical great wall and the inspiring the birds nest. In rock friction experiments, stickslip behavior is the laboratory equivalent of the earthquake process. Pdf on the path to the digital rock physics of gas hydrate. Towards integrating conventional and digital rock physics.
Evaluation and application of digital rock physics drp for. 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. Digital rock physics complements the laboratory and field work that geologists, petroleum engineers, hydrologists, environmental scientists, and others traditionally rely on. In 20, we acquired vsg visualization sciences group, the leading provider of 3d software applications and components for the oil and gas industry. Many phenomena are caused by stickslip behavior, such as the music produced by bowed instruments, the noise of car brakes and even the sound from grasshoppers. 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. Digital rock, pioneers in digital rock for the oil and gas. Textural descriptions, traditionally obtained via 2d petrographic analysis, are directly measured on 3d digital images of core material saadatfar et al. Paul budnik my work as an undergraduate in my first course on quantum mechanics in 1964 the idea occurred to me that a discretized version of the wave equation might be able to explain all of physics. Sep 27, 2016 animation created by simpleware with repsol. Rpt developed enter, an interpretation software that uses advanced rock physicsdriven interpretation in a flexible graphics framework to predict porosity, lithology and fluid saturation from seismic data.
Perform fluid substitution and invasion correction using your rock physics model. 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. It is a form of digital ontology about the physical reality. The digital rock physics workflow starts with obtaining and segmenting a scanning electron microscope image. In physics and cosmology, digital physics is a collection of theoretical perspectives based on the premise that the universe is describable by information. Digital rock physics drp has been applied to reveal the mechanisms how porescale processes govern macroscopic rock properties, such as transport, elastic, thermal and electrical properties, in a.
Experimental systems are available for microoptical, microdigital, core and. Towards integrating conventional and digital rock physics s. The key paradigm of digital rock physics drp image and compute implies imaging and digitizing the pore space and mineral matrix of natural rock and then numerically simulating various physical processes in this digital object to obtain such macroscopic rock properties as permeability, electrical conductivity, and elastic moduli. Despite the availability of both commercial and opensource software, an ideal tool for digital rock physics analysis for accurate automatic image analysis at ambient computational performance is. Professor vanorio directs the rock physics group and the stanford rock physics laboratory group. Introduction to digital rock physics and predictive rock. All of the above major areas of rock physics are covered in great detail between the departments of eaps and cee. Imaging techniques for the analysis of porous structures have revolutionized our ability to quantitatively characterize geomaterials. An acknowledgement form signed by both the student and a parent is due by tuesday, september 10.
Digital rock physics and laboratory considerations on a highporosity. Petrophysicists are employed to help reservoir engineers and geoscientists understand the rock properties of the reservoir. By combining the worlds most advanced symbolic computation engine with powerful numeric algorithms, advanced visualization tools, and intuitive interfaces, maplesoft products are helping physicists around the world deepen our understanding of how the universe works. Intuitive software needed making these results easy to obtain, and ensuring that safeguards like convergence graphs and other tools for deciding on the quality of generated meshes and results are available, is a key goal for digital rock physics software. Evaluation and application of digital rock physics drp. Emii 2015 stanford symposium on multiscale digital rock.
Start with a seismicpetrophysical model to derive optimal elastic properties for all lithologies including nonreservoirs. In this approach, highresolution images of the rocks pores and mineral grains are obtained and processed, and the rock properties are evaluated by numerical simulation at the pore scale. International symposium on digital rock physics and applications is once symposium. These logs are commonly called deltat dtp and dts and have units of or. Digital rock physics for fast and accurate special core. Estimate anisotropy and correct for anisotropy influence. Digital rock physics helps scientists understand porous media. Hess digital rock physics lab brings worldclass focus to. Digital rock physics drp investigates and calculates the physical and fluid flow. Seismic reflectivity modelling of isotropic, vti, hti, and fully orthorhombic media. 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. Simplifying digital rock physics workflows gareth a. For numerical experimentation to find its way into the mainstream, it has to be practical and easily repeatable, i.
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