Dissertations / Theses on the topic 'Non-Fractured'
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Altinors, Adnan Altay. "Non-darcian Flow In A Fractured Aquifer." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606386/index.pdf.
Full texts equation which incorporates a nonlinear term. Governing equations are coupled by an interaction term that controls the quasi-steady state fracture-block interflow. Governing equations are solved numerically by the Crank-Nicolson implicit scheme. The numerical results are compared to the analytical results for the same problem which assumes Darcian flow both in fractures and blocks. Numerical and analytical solutions give same results when Reynold&rsquo
s number is less than 0.1. The effect of non-linearity on the flow appears when Reynold&rsquo
s number is greater than 0.1. The larger the piezometric head gradient, the higher the flow rate and, thus, higher the non-linearity is. The effect of aquifer parameters on the flow is also investigated. The proposed model and its numerical solution is a unique application of non-linear flow models to the fractured aquifers. It can be used in predicting water levels in fractured aquifers and evaluating time dependent flow rates in the analysis of recession hydrographs.
Watanabe, Norihiro. "Finite element method for coupled thermo-hydro-mechanical processes in discretely fractured and non-fractured porous media." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-104411.
Full textAl-Homadhi, Emad Solaman. "A study of the formation damage associated with the injection of oil and solids into fractured and non-fractured rock." Thesis, Heriot-Watt University, 1998. http://hdl.handle.net/10399/1286.
Full textHardisty, Paul Edward. "Characterization, occurrence and behaviour of light non-aqueous phase liquids in fractured rock." Thesis, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244612.
Full textDickins, Mark Ian. "The impact of gravity segregation on multiphase non-Darcy flow in hydraulically fractured gas wells." Texas A&M University, 2008. http://hdl.handle.net/1969.1/86048.
Full textWatanabe, Norihiro [Verfasser], Olaf [Akademischer Betreuer] Kolditz, and Heinz [Akademischer Betreuer] Konietzky. "Finite element method for coupled thermo-hydro-mechanical processes in discretely fractured and non-fractured porous media / Norihiro Watanabe. Gutachter: Olaf Kolditz ; Heinz Konietzky. Betreuer: Olaf Kolditz." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://d-nb.info/106844388X/34.
Full textStark, Albert Jason. "Behavior of hydraulically fractured gas wells in the presence of reservoir and fracture non-Darcy flow." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ38559.pdf.
Full textDeeds, Neil Edward. "Development and evaluation of partitioning interwell tracer test technology for detection of non-aqueous phase liquids in fractured media /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.
Full textYang, Zhibing. "Multiphase Contamination in Rock Fractures : Fluid Displacement and Interphase Mass Transfer." Doctoral thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-183720.
Full textFlerfasflöde och ämnestransport i sprickigt berg är av betydelse för många praktiska och tekniska problem. Tunga, svårlösliga organiska vätskor (engelska: dense non-aqueous phase liquids: DNAPLs; t.ex. klorerade lösningsmedel) kan orsaka långvarig förorening av vattenresurser, inklusive akviferer i sprickigt berg, och utgör ett viktigt miljöproblem inom grundvattenhydrologin. Denna studie behandlar två fundamentala processer för spridning av flerfasföroreningar i sprickiga medier – utbredning av den organiska vätskan och massöverföring mellan organisk vätska och vatten. Arbetet har fokuserat på att förbättra nuvarande kunskap om de fysikaliska processerna på liten skala (enskilda sprickor) genom en kombination av numerisk modellering, laboratorieexperiment och modellutveckling. Avhandlingen har bidragit till utökad processförståelse i flera avseenden. För det första har arbetet belyst effekterna av sprickaperturens variabilitet, uttryckt med geostatistiska parametrar som standardavvikelse och rumslig korrelationslängd, på fastläggning och lösning av organiska vätskor i enskilda sprickor, samt utmattningsbeteendet hos dessa källor till grundvattenförorening. För det andra har en ny, generell metod (adaptiva cirkelpassningsmetoden) för att ta hänsyn till effekten av krökningen av gränsytan mellan organisk vätska och vatten i sprickplanet utvecklats; denna metod har visats fungera väl i simuleringar av tidigare publicerade experimentella data. För det tredje, har en jämförelse gjorts mellan en kontinuumbaserad tvåfasflödesmodell och en invasions-perkolationsmodell med avseende på hur väl de kan simulera tvåfasflöde i en spricka med varierande apertur. Här studerades även hur relationen mellan kapillärtryck och mättnadsgrad på sprickplansskala beror av variabiliteten i sprickapertur. Till sist undersöktes lösning av den organiska vätskan i grundvatten för två fastläggningsscenarier (fastläggning i immobila droppar och ansamling i fällor – ”återvändssprickor”) både genom experiment och mekanistisk numerisk modellering. Kunskapen som tagits fram i denna avhandling bedöms vara användbar även för att modellera spridningen av flerfasföroreningar på större (spricknätverks-) skalor.
Vitel, Sarah. "Méthode de changement d'échelle globale adaptative - Application aux réservoirs fracturés tridimensionnels." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL048N/document.
Full textMost methods for modeling fractured reservoirs rely on the model of Warren and Root (1963). But this model is limited by: the assumption of a representative elementary volume, the evaluation of matrix-fracture transfers, the idealization of the fractured system, the use of local boundary conditions. The developed method overcomes these four points. A fracture network and a matrix grid are jointly discretized, then an upscaling is carried out. A set of representative nodes is selected, and an equivalent simplified system is built by decimating the other nodes while ensuring the preservation of pressure and flow rate and without imposing any boundary conditions. Finally the number of connexions is reduced and the remaining transmissibilities are evaluated by an optimization procedure. These simplified systems have been solved more quickly by the flow simulator while reproducing the fine model behavior
Rouchier, Simon. "Hygorthermal performance assessment of damaged building materials." Phd thesis, Université Claude Bernard - Lyon I, 2012. http://tel.archives-ouvertes.fr/tel-00980172.
Full textPang, Ti Wee. "DNAPL remediation of fractured rock evaluated via numerical simulation." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4151.
Full textZack, Travis Ian. "Exploring cancer's fractured genomic landscape| Searching for cancer drivers and vulnerabilities in somatic copy number alterations." Thesis, Harvard University, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=3645095.
Full textSomatic copy number alterations (SCNAs) are a class of alterations that lead to deviations from diploidy in developing and established tumors. A feature that distinguishes SCNAs from other alterations is their genomic footprint. The large genomic footprint of SCNAs in a typical cancer's genome presents both a challenge and an opportunity to find targetable vulnerabilities in cancer. Because a single event affects many genes, it is often challenging to identify the tumorigenic targets of SCNAs. Conversely, events that affect multiple genes may provide specific vulnerabilities through "bystander" genes, in addition to vulnerabilities directly associated with the targets.
We approached the goal of understanding how the structure of SCNAs may lead to dependency in two ways. To improve our understanding of how SCNAs promote tumor progression we analyzed the SCNAs in 4934 primary tumors in 11 common cancers collected by the Cancer Genome Atlas (TCGA). The scale of this dataset provided insights into the structure and patterns of SCNA, including purity and ploidy rates across disease, mechanistic forces shaping patterns of SCNA, regions undergoing significantly recurrent SCNAs, and correlations between SCNAs in regions implicated in cancer formation.
In a complementary approach, we integrating SCNA data and pooled RNAi screening data involving 11,000 genes across 86 cell lines to find non-driver genes whose partial loss led to increased sensitivity to RNAi suppression. We identified a new set of cancer specific vulnerabilities predicted by loss of non-driver genes, with the most significant gene being PSMC2, an obligate member of the 26S proteasome. Biochemically, we found that PSMC2 is in excess of cellular requirement in diploid cells, but becomes the stoichiometric limiting factor in proteasome formation after partial loss of this gene.
In summary, my work improved our understanding of the structure and patterns of SCNA, both informing how cancers develop and predicting novel cancer vulnerabilities. Our characterization of the SCNAs present across 5000 tumors uncovered novel structure in SCNAs and significant regions likely to contain driver genes. Through integrating SCNA data with the results of a functional genetic screen, we also uncovered a new set of vulnerabilities caused by unintended loss of non-driver genes.
Jazayeri, Noushabadi Mahmoud Reza. "Characterisation of relationships between fracture network and flow-path network in fractured and karstic Reservoirs : Numerical modelling and field investigation (Lez aquifer, Southern France)." Montpellier 2, 2009. http://www.theses.fr/2009MON20206.
Full textAlthough the specific flow behaviour of fractured reservoirs has been identified and modelled since relatively long time, there are still lots of problem concerning the fractured reservoir characterisation. The main problem, often cited in the context of the development and exploitation of fractured reservoirs, is the difficulty in defining the fracture network properties that impact the flow path-network and the inter-porosity flow transfer between the fracture continuum and matrix continuum. Well test is one of the tools that are used for the characterisation of geometrical and hydrodynamic properties of fractured reservoir, such as inter-porosity flow exchange coefficient, fracture storativity to whole reservoir storativity ratio, and reservoir permeability. But all these information applied to characterise a fractured reservoir at regional scale are inferred from only a few boreholes. One may thus wonder if all observation boreholes have the same hydrodynamic response to a well test. In order to answer this question a series of numerical well tests are conducted in synthetic fracture networks to evaluate the effect of the pumping well location on the dual porosity pressure responses. The impact of geometrical parameters, such as fracture spacing and mean length, on fluid flow behaviour and inter-porosity exchange coefficient are investigated for different pumping well location in the first chapter. Well test simulations in the synthetic fractured reservoirs, with a non uniform distribution pattern, highlight the dependency of the measured inter-porosity flow exchange coefficient to the pumping test location. The mean fracture length (which controls connectivity) is assessed to be the main geometrical parameter which influences the reservoir hydrodynamic response during well test. In the second chapter, the relationship between fracture network and flow-path network are investigated in a real fractured and karstic carbonate aquifer (Lez aquifer, southern France). A multi-disciplinary case study, which aims to assess the main parameters which affect the preferential flow-path network, is thus performed. It comprises geological, geophysical and hydrodynamic data acquisition and interpretations. The collection of geometrical parameters such as fracture density, orientation, length is done at different scales (borehole, field site, aquifer). Applying different data acquisition techniques such as borehole image, outcrop observation and aerial photography are claimed to characterise the fracture network. In this experimental part, it is shown that geological and geophysical data such as fracture data acquisition, borehole imagery (OTV), reservoir electrical resistivity imaging are the minimum requested data for characterizing the fracture network of a given reservoir. Investigation of flow-path network is done through conducting a series of well logging, interference tests and pulse tests at two scales. This step gives some clarifications about the quality of connectivity and conductivity of fractures at different zones. Then, we assess the relationship between fracture network and flow-path network by integrating all geological, geophysical and hydrodynamic data. It is shown that conducting well test series at two different scales within the same fractured and karstic reservoir allow verifying the scale dependency of permeability within a same system; it also shows that other important factors than the scale of observation affect these permeability variations. Combination of all data (geological, geophysical and hydrodynamic) illustrates that the borehole connectivity to the flow-path network and water table level during well test operation are the parameters which mainly control the permeability value estimation, whatever the scale of observation. Finally, in the third chapter, we define the hydrogeological conceptual models at local and regional scales. Then a simple 2D numerical model based on the hydrogeological conceptual model at each scale is proposed and the numerical geomodelling and fluid flow simulation are compared to the observed hydrodynamic behaviour in the site. Results of fluid flow simulation in the numerical models at local and regional scales confirm our hypothesis about effect of borehole location and its connectivity with the flow-path network on the recorded hydrodynamic responses at borehole
Trottier, Nicolas. "Modélisation des écoulement en milieux poreux fracturés : estimation des paramètres par approche inverse multi-échelle." Phd thesis, Université de Strasbourg, 2014. http://tel.archives-ouvertes.fr/tel-01037933.
Full textShing, Dai Ton, and 戴通興. "The Research on Non-Darcy flow in Fractured Rock." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/20366444636247561751.
Full text國立成功大學
水利及海洋工程學系
89
ABSTRACT The general study of groundwater is based on Darcy’s law,it is usually valid in low velocity.However,the range of Darcy’s law is only between Reynold number 1~10 The movement of groundwater in some special geologic structure,such as in the media passing through gravel undermine eroded cavity fracture and pebble,it is similar to the flow in the channel in the pipe,and its velocity is usually high. The behavior of fluid flow in fracture is very complex,the important things that we want to know are hydraulic gradient,flow velocity,and discharge. The behavior of fluid flowing below ground is concern with both of them,so combined both of Non-Darcy flow and fracture rock is the main purpose of this study ,the first approximation is achieved under many ideal condition.
Watanabe, Norihiro. "Finite element method for coupled thermo-hydro-mechanical processes in discretely fractured and non-fractured porous media." Doctoral thesis, 2011. https://tud.qucosa.de/id/qucosa%3A26521.
Full textMann, VANESSA. "LABORATORY STUDIES OF BIOBARRIER TECHNOLOGY IN FRACTURED ROCK." Thesis, 2012. http://hdl.handle.net/1974/7649.
Full textThesis (Ph.D, Civil Engineering) -- Queen's University, 2012-11-22 11:23:24.065
Alarbi, Nasraldin Abdulslam A. "Investigation of the Effect of Non-Darcy Flow and Multi-Phase Flow on the Productivity of Hydraulically Fractured Gas Wells." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9786.
Full textChung, Yu, and 鍾渝. "Analytical model for non-Darcian flow toward a partially penetrating well due to constant-rate pumping in a fractured confined aquifer." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/pk3h2q.
Full text國立交通大學
環境工程系所
106
This study presents a mathematical model for describing the drawdown distribution to analyze non-Darcian flow for constant-rate pumping at a partially penetrating well in a fractured confined aquifer of infinite extent. The model is developed based on the double-porosity concept combined with a linearized non-Darcian flow approach using Izbash’s law. The solution of the model in Laplace domain is derived via the methods of finite Fourier cosine transform and Laplace transform. The time-domain results are numerically evaluated by the Crump scheme. Both large-time and small-time solutions for transient flow are derived based on the convolution theorem and the Bromwich integral and the steady-state solution is also developed. The existing solutions for non-Darcian flow are shown to be special cases of the present solution. The solution is then compared with the finite difference solution to verify its correctness. Also, the comparison between the present solution and exiting solution for Darcian flow reveals that the fluid exchange from the matrix blocks to the fractures occurring in the intermediate time. The effects of exchange coefficient and non-Darcian factor on the temporal drawdown are examined. Moreover, the sensitivity analysis is performed to investigate the drawdown behavior in response to the change in each of the hydraulic parameters. Finally, the present solution is coupled with the Levenberg-Marquardt algorithm to analyze two sets of field measured data for estimating the hydraulic parameters. This present solution is a useful tool in predicting the non-Darcian flow in fractured confined aquifers and determining the aquifer hydraulic parameters for double-porosity media.
Singh, Gurpreet 1984. "Coupled flow and geomechanics modeling for fractured poroelastic reservoirs." Thesis, 2014. http://hdl.handle.net/2152/28473.
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