Intermediate Scale Hydraulic Fracturing In A Deep Mine Kismet Project Summary 2016
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Intermediate Scale Hydraulic Fracturing In A Deep Mine Kismet Project Summary 2016
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Author :
language : en
Publisher:
Release Date : 2016
Intermediate Scale Hydraulic Fracturing In A Deep Mine Kismet Project Summary 2016 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
In support of the U.S. DOE SubTER Crosscut initiative, we established a field test facility in a deep mine and designed and carried out in situ hydraulic fracturing experiments in the crystalline rock at the site to characterize the stress field, understand the effects of rock fabric on fracturing, and gain experience in monitoring using geophysical methods. The project also included pre- and post-fracturing simulation and analysis, laboratory measurements and experiments, and we conducted an extended analysis of the local stress state using previously collected data. Some of these activities are still ongoing. The kISMET (permeability (k) and Induced Seismicity Management for Energy Technologies) experiments meet objectives in SubTER's "stress" pillar and the "new subsurface signals" pillar. The kISMET site was established in the West Access Drift of SURF 4850 ft (1478 m) below ground (on the 4850L) in phyllite of the Precambrian Poorman Formation. We drilled and cored five near-vertical boreholes in a line on 3 m spacing, deviating the two outermost boreholes slightly to create a five-spot pattern around the test borehole centered in the test volume at ~1528 m (5013 ft). Laboratory measurements of core from the center test borehole showed P-wave velocity heterogeneity along each core indicating strong, fine-scale (~1 cm or smaller) changes in the mechanical properties of the rock. The load-displacement record on the core suggests that the elastic stiffness is anisotropic. Tensile strength ranges between 3-7.5 MPa and 5-12 MPa. Permeability measurements are planned, as are two types of laboratory miniature hydraulic fracturing experiments to investigate the importance of rock fabric (anisotropy and heterogeneity) on near-borehole hydraulic fracture generation. Pre-fracturing numerical simulations with INL's FALCON discrete element code predicted a fracture radius of 1.2 m for a corresponding injection volume of 1.2 L for the planned fractures, and negligible microseismicity. Field measurements of the stress field by hydraulic fracturing showed that the minimum horizontal stress at the kISMET site averages 21.7 MPa (3146 psi) pointing approximately N-S (356 degrees azimuth) and plunging slightly NNW at 12°. The vertical and horizontal maximum stress are similar in magnitude at 42-44 MPa (6090-6380 psi) for the depths of testing which averaged approximately 1530 m (5030 ft). Hydraulic fractures were remarkably uniform suggesting core-scale and larger rock fabric did not play a role in controlling fracture orientation. Monitoring using ERT and CASSM in the four monitoring boreholes, and passive seismic accelerometer-based measurements in the West Access Drift, was carried out during the generation of a larger fracture (so-called stimulation test) at a depth of 40 m below the invert. ERT was not able to detect the fracture created, nor were the accelerometers in the drift, but microseismicity was detected for first (deepest) hydraulic-fracturing stress measurement. The CASSM data have not yet been analyzed. Analytical solutions suggest fracture radius of the large fracture (stimulation test) was more than 6 m, depending on the unknown amount of leak-off. The kISMET results for stress state are consistent with large-scale mid-continent estimates of stress. Currently we are using the orientation of the stress field we determined to interpret a large number of borehole breakouts recorded in nearby boreholes at SURF to generate a more complete picture of the stress field and its variations at SURF. The efforts on the project have prompted a host of additional follow-on studies that we recommend be carried out at the kISMET site.
Geomechanics And Geodynamics Of Rock Masses
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Author : Vladimir Litvinenko
language : en
Publisher: CRC Press
Release Date : 2018-05-24
Geomechanics And Geodynamics Of Rock Masses written by Vladimir Litvinenko and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-24 with Technology & Engineering categories.
Geomechanics and Geodynamics of Rock Masses – Selected Papers contains selected contributions from EUROCK 2018, the 2018 International Symposium of the International Society for Rock Mechanics (ISRM 2018, Saint Petersburg, Russia, 22—26 May 2018). Dedicated to recent advances and achievements in the fields of geomechanics and geotechnology, the book will be of interest to researchers and professionals involved in the various branches of rock mechanics and rock engineering. EUROCK 2018, organized by the Saint Petersburg Mining University, is a continuation of the successful series of ISRM symposia in Europe, which began in 1992 in Chester, UK.
Modelling Rock Fracturing Processes
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Author : Baotang Shen
language : en
Publisher: Springer Nature
Release Date : 2020-05-06
Modelling Rock Fracturing Processes written by Baotang Shen and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-05-06 with Science categories.
This book is the second edition of the well-known textbook Modelling Rock Fracturing Processes. The new and extended edition provides the theoretical background of rock fracture mechanics used for modelling of 2-D and 3-D geomechanics problems and processes. Fundamentals of rock fracture mechanics integrated with experimental studies of rock fracturing processes are highlighted. The computer programs FRACOD 2D and 3D are used to analyse fracture initiation and propagation for the three fracture modes: Mode I, II and III. Coupled fracture modelling with other continuous and distinct element codes including FLAC, PFC, RFPA, TOUGH are also described. A series of applications of fracture modelling with importance for modern society is presented and discussed by distinguished rock fracture modelling experts.
The Homestake Gold Mine An Early Proterozoic Iron Formation Hosted Gold Deposit Lawrence County South Dakota
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Author : Geological Survey (É.-U.)
language : en
Publisher:
Release Date : 1991
The Homestake Gold Mine An Early Proterozoic Iron Formation Hosted Gold Deposit Lawrence County South Dakota written by Geological Survey (É.-U.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Geology categories.
Words You Should Know How To Spell
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Author : David Hatcher
language : en
Publisher: Simon and Schuster
Release Date : 2010-07-18
Words You Should Know How To Spell written by David Hatcher and has been published by Simon and Schuster this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-18 with Reference categories.
Ceilling. Beleive. Scissers. Do you have trouble spelling everyday words? Is your spell check on overdrive? Well, this easy-to-use dictionary is just what you need! Organized with speed and convenience in mind, it gives you instant access to the correct spellings of more than 12,500 words. Also provided are quick tips and memory tricks, like: Help yourself get the spelling of their right by thinking of the phrase ?their heirlooms.? Most words ending in a ?seed? sound are spelled ?-cede? or ?-ceed,? but one word ends in ?-sede.? You could say the rule for spelling this word supersedes the other rules. No matter what you’re working on, you can be confident that your good writing won’t be marred by bad spelling. This book takes away the guesswork and helps you make a good impression!
Mining The Earth S Heat Hot Dry Rock Geothermal Energy
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Author : Donald W. Brown
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-04-23
Mining The Earth S Heat Hot Dry Rock Geothermal Energy written by Donald W. Brown and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-04-23 with Science categories.
Mining the Earth's Heat: Hot Dry Rock Geothermal Energy describes the work carried out by the Los Alamos National Laboratory to turn an idealistic concept - that of drawing useful amounts of energy from the vast underground store of hot rock at reachable depths - into a practical reality. This book provides comprehensive documentation of the over two decades of experiments carried out at the test site at Fenton Hill, New Mexico, where the feasibility of accessing and extracting this vast natural resource was finally demonstrated. It also discusses the numerous technical, administrative, and financial hurdles that had to be overcome along the way. This publication will no doubt prove invaluable to researchers around the world as they strive to move this now-proven technology toward commercial viability. In addition, it is a valuable source of relevant information for anyone interested in the world energy outlook for the 21st century and beyond.
Hydraulic Fracture Modeling
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Author : Yu-Shu Wu
language : en
Publisher: Gulf Professional Publishing
Release Date : 2017-12-12
Hydraulic Fracture Modeling written by Yu-Shu Wu and has been published by Gulf Professional Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-12 with Technology & Engineering categories.
Hydraulic Fracture Modeling delivers all the pertinent technology and solutions in one product to become the go-to source for petroleum and reservoir engineers. Providing tools and approaches, this multi-contributed reference presents current and upcoming developments for modeling rock fracturing including their limitations and problem-solving applications. Fractures are common in oil and gas reservoir formations, and with the ongoing increase in development of unconventional reservoirs, more petroleum engineers today need to know the latest technology surrounding hydraulic fracturing technology such as fracture rock modeling. There is tremendous research in the area but not all located in one place. Covering two types of modeling technologies, various effective fracturing approaches and model applications for fracturing, the book equips today’s petroleum engineer with an all-inclusive product to characterize and optimize today’s more complex reservoirs. Offers understanding of the details surrounding fracturing and fracture modeling technology, including theories and quantitative methods Provides academic and practical perspective from multiple contributors at the forefront of hydraulic fracturing and rock mechanics Provides today’s petroleum engineer with model validation tools backed by real-world case studies
Migrations Of Fines In Porous Media
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Author : Kartic C. Khilar
language : en
Publisher: Springer Science & Business Media
Release Date : 1998-10-31
Migrations Of Fines In Porous Media written by Kartic C. Khilar and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-10-31 with Science categories.
This is the first book entirely on the topic of Migration of Fine Particles in Porous Media. There are two purposes for the use of this book. First, the book is intended to serve as a comprehensive monograph for scientists and engineers concerned with problems of erosion, pollution and plugging due to migration of fines in porous media. Second, the book is recommended to be used as a reference book for courses offered at senior or graduate level on the topics of flow through porous media, soil erosion and pollution, or formation damage. The migration of fine particles in porous media is an engineering concern in oil production, soil erosion, ground water pollution and in the operation of filter beds. As a result, the topic has been studied by researchers working in a number of disciplines. These studies in different disciplines are conducted, by and large, independently and hence there is some repetition and perhaps more importantly there is a lack of uniformity and coherence. These studies, nevertheless, complement each other. To illustrate the point, consider for example the migration of fine particles induced by hydrodynamic forces.
Digital Theatre
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Author : Nadja Masura
language : en
Publisher: Springer Nature
Release Date : 2020-10-21
Digital Theatre written by Nadja Masura and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-10-21 with Performing Arts categories.
Digital Theatre is a rich and varied art form evolving between performing bodies gathered together in shared space and the ever-expanding flexible reach of the digital technology that shapes our world. This book explores live theatre performances which incorporate video projection, animation, motion capture and triggering, telematics and multisite performance, robotics, VR, and AR. Through examples from practitioners like George Coates, the Gertrude Stein Repertory Theatre, Troika Ranch, David Saltz, Mark Reaney, The Builder’s Association, and ArtGrid, a picture emerges of how and why digital technology can be used to effectively create theatre productions matching the storytelling and expressive needs of today’s artists and audiences. It also examines how theatre roles such as director, actor, playwright, costumes, and set are altered, and how ideas of body, place, and community are expanded.
The Combined Finite Discrete Element Method
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Author : Antonio A. Munjiza
language : en
Publisher: John Wiley & Sons
Release Date : 2004-04-21
The Combined Finite Discrete Element Method written by Antonio A. Munjiza and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-04-21 with Technology & Engineering categories.
The combined finite discrete element method is a relatively new computational tool aimed at problems involving static and / or dynamic behaviour of systems involving a large number of solid deformable bodies. Such problems include fragmentation using explosives (e.g rock blasting), impacts, demolition (collapsing buildings), blast loads, digging and loading processes, and powder technology. The combined finite-discrete element method - a natural extension of both discrete and finite element methods - allows researchers to model problems involving the deformability of either one solid body, a large number of bodies, or a solid body which fragments (e.g. in rock blasting applications a more or less intact rock mass is transformed into a pile of solid rock fragments of different sizes, which interact with each other). The topic is gaining in importance, and is at the forefront of some of the current efforts in computational modeling of the failure of solids. * Accompanying source codes plus input and output files available on the Internet * Important applications such as mining engineering, rock blasting and petroleum engineering * Includes practical examples of applications areas Essential reading for postgraduates, researchers and software engineers working in mechanical engineering.