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Dissertations / Theses on the topic 'Method of the effective permeability'

Author: Grafiati

Published: 30 May 2022

Last updated: 31 July 2025

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1

Грецких, Светлана Владимировна. "Ослабление статического геомагнитного поля ферромагнитными элементами домов". Thesis, Государственное учреждение "Институт технических проблем магнетизма НАН Украины", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21435.

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Диссертация на соискание ученой степени кандидата технических наук по специальности 05.09.05 – теоретическая электротехника. – Национальный технический университет "Харьковский политехнический институт", Харьков, 2016. Диссертация посвящена математическому моделированию явления ослабления статического геомагнитного поля (ГМП) в помещениях жилых домов и разработке рекомендаций по методам его нормализации до безопасного уровня. Полученные в диссертации результаты в совокупности составляют существенный вклад в решение научно-прикладной задачи теоретической электротехники по моделированию явления

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2

Грецьких, Світлана Володимирівна. "Ослаблення статичного геомагнітного поля феромагнітними елементами будинків". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/21433.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.09.05 – теоретична електротехніка. – Національний технічний університет "Харківський політехнічний інститут", Харків, 2016. Дисертація присвячена математичному моделюванню явища ослаблення статичного геомагнітного поля (ГМП) в приміщеннях житлових будинків та розробці рекомендацій з методів його нормалізації до безпечного рівня. На прикладі циліндричної феромагнітної колони проведено моделювання ослаблення ГМП за допомогою методу еквівалентних (фіктивних) магнітних зарядів та розв’язано задачу розрахунку інд

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3

BAJNI, GRETA. "STATISTICAL METHODS TO ASSESS ROCKFALL SUSCEPTIBILITY IN AN ALPINE ENVIRONMENT: A FOCUS ON CLIMATIC FORCING AND GEOMECHANICAL VARIABLES." Doctoral thesis, Università degli Studi di Milano, 2022. http://hdl.handle.net/2434/913511.

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The overarching goal of the doctoral thesis was thus the development of a systematic procedure capable to examine and enhance the role of geomechanical and climatic processes in rockfall susceptibility, performed with statistically based and Machine Learning techniques. To achieve this purpose, two case studies were analysed in the Italian Alps (Valchiavenna, Lombardy Region; Mountain Communities of Mont Cervin and Mont Emilius, Aosta Valley Region). For both case studies, Generalized Additive Models (GAM) were used for rockfall susceptibility assessment; for the Valchiavenna case study, a Ra

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4

Paleologos, Evangelos Konstantinos 1958. "Effective hydraulic conductivity of bounded, strongly heterogeneous porous media." Diss., The University of Arizona, 1994. http://hdl.handle.net/10150/191184.

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This dissertation develops analytical expressions for the effective hydraulic conductivity Kₑ of a three-dimensional porous medium bounded by two parallel planes of infinite extent separated by a distance 2a. Head varies randomly along each boundary about a uniform mean value. The log hydraulic conductivity Y forms a homogeneous, statistically anisotropic random field having a variance σᵧ² and principal integral scales λ₁, λ₂, λ₃. Flow is uniform in the mean parallel to the principal coordinate χ₁. A solution is first derived for mildly nonuniform media with σᵧ² ≪ 1 via an approximate form of

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5

Song, Young-Tae. "Application of permeability similitude method to centrifuge test." Ohio University / OhioLINK, 1994. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1178735952.

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6

Lancaster, James William. "Multi-scale estimation of effective permeability within the Greenholes Beck catchment." Thesis, Lancaster University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369589.

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7

Rinkevich, A. B., M. I. Samoylovich, and A. F. Belyanin. "Effective Conductivity and Magnetic Permeability of Nanostructured Materials in Magnetic Field." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35340.

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The problem of homogenization the nanostructured materials placed in DC magnetic field has been discussed. The experimental data are obtained using metallic superlattices, metal-dielectric thin films and 3D-nanostructured materials. All these materials contain ferro- or ferrimagnetic component. The trans-mission and reflection coefficients were measured on the waves of millimeter waveband. It has been shown that the experimental frequency spectra of the coefficients in zero magnetic field can be described by the effective conductivity and dielectric permittivity. The spectra of ferromagnetic r

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8

Drews, Michael C. "Modelling stress-dependent effective porosity-permeability relationships of metre-scale heterogeneous mudstones." Thesis, University of Newcastle Upon Tyne, 2012. http://hdl.handle.net/10443/1672.

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The importance of shales and mudstones to applied geosciences and in particular to fluid migration in sedimentary basins has never been more recognized than today. Prominent examples are conventional or unconventional petroleum systems, where shales and mudstones act as source, reservoir or cap rock, but also CO2 and nuclear waste storage or hydrogeology. Despite their importance, shales and mudstones are yet not as far well understood as sandstones or carbonate rocks. In particular, the influence of heterogeneity on fluid migration has been poorly addressed in the past, although many authors

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9

Chen, Chien-Cheng. "An investigation into the relationship between effective stress and permeability of clays." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320827.

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10

DELGADO, CARLOS WILFREDO CARRILLO. "DEVELOPMENT OF AN EQUIPMENT FOR THE STUDY OF EFFECTIVE PERMEABILITY IN MULTIPHASE MEDIA." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2000. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=2032@1.

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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>O trabalho apresenta uma ampla revisão de conceitos básicos associados ao fluxo multifásico (fluxo simultâneo de dois ou mais fluidos) em meios porosos, bem como técnicas de ensaios e equipamentos utilizados na determinação de permeabilidades efetiva e absoluta em solos saturados e não saturados com água. Com base nesta revisão, e visando a medida da permeabilidade de solos não saturados submetidos a fluxo de misturas gasolina-álcool, foi projetados, construído e colocado em operação um sistema de permeâmetros de parede f

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11

Song, Young-Tae. "Application of permeabilty similitude method to centrifuge test." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1178735952.

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12

Carballo, Salas Jose Gilberto. "Alleviation of effective permeability reduction of gas-condensate due to condensate buildup near wellbore." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3245.

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When the reservoir pressure is decreased below dew point pressure of the gas near the wellbore, gas-condensate wells start to decrease production because condensate is separated from the gas around the wellbore causing a decrease in gas relative permeability. This effect is more dramatic if the permeability of the reservoir is low. The idea proposed for reducing this problem is to eliminate the irreducible water saturation near the wellbore to leave more space for the gas to flow and therefore increase the productivity of the well. In this research a simulation study was performed to determine

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13

Murray, Gordon Bruce. "The development of an estimation method for the saturated hydraulic conductivity of selected Nova Scotia soils /." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59983.

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An estimation method for predicting the saturated hydraulic conductivity (Ksat) of the soil was developed for common Nova Scotia soil types by examination of historical Ksat records. Detailed statistical analysis was performed to develop useful predictive models for Ksat based on soil physical properties and to determine the confidence limits for specific horizon-soil type combinations. Sensitivity analysis of the Hooghoudt equation was then performed to establish Ksat classes to which the confidence limits could be assigned to complete the development of the estimation method.<br>Model develo

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14

Teimoori, Sangani Ahmad Petroleum Engineering Faculty of Engineering UNSW. "Calculation of the effective permeability and simulation of fluid flow in naturally fractured reservoirs." Awarded by:University of New South Wales. School of Petroleum Engineering, 2005. http://handle.unsw.edu.au/1959.4/22408.

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This thesis is aimed to calculate the effective permeability tensor and to simulate the fluid flow in naturally fractured reservoirs. This requires an understanding of the mechanisms of fluid flow in naturally fractured reservoirs and the detailed properties of individual fractures and matrix porous media. This study has been carried out to address the issues and difficulties faced by previous methods; to establish possible answers to minimise the difficulties; and hence, to improve the efficiency of reservoir simulation through the use of properties of individual fractures. The methodology us

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15

Xu, Chuntang. "Estimation of effective compressibility and permeability of porous materials with differential acoustic resonance spectroscopy /." May be available electronically:, 2007. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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16

Jarzemba, Mark Steven. "A method for measuring the radon hazard of low permeability soils /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487848078449258.

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17

Mckernan, Rosanne. "An experimental investigation into the stress dependent fluid transport properties of mudstones." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/an-experimental-investigation-into-the-stress-dependent-fluid-transport-properties-of-mudstones(17efbf46-29a3-44d1-afd3-194709418c90).html.

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Measuring transport properties of rock samples under stress is essential to understanding and predicting the migration of fluids within the Earth's crust. Mudrocks play an essential role in petroleum systems as they are often the source rock and may act as a seal due to their low permeability. With increasing production from unconventional reservoirs where the mudrock is source, reservoir and seal, there is now even greater demand to understand the permeability and storativity of mudstones and tight sandstones. When hydraulic fracture treatment is used to enhance production, flow of hydrocarbo

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18

Harmon, C. Reid Jr. "IPU/LTB:a method for reducing effective memory latency." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/5352.

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19

Hong, Bryan Y. "An effective noise filtering method for mine detection." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5576.

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Approved for public release; distribution is unlimited.<br>Automatic detection of sea mines in coastal regions is difficult due to highly varying sea bottom conditions present in the underwater environment. Detection systems must be able to discriminate objects that vary in size, shape, and orientation from naturally occurring and man-made clutter. Additionally, these automated systems must be computationally efficient to be incorporated into Unmanned Aerial Vehicle (UAV) sensor systems characterized by high sensor data-rates and limited processing abilities. Commonly used noise filters largel

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20

Burlaka, Iryna. "Discussion as an effective foreign language teaching method." Thesis, Київський національний університет технологій та дизайну, 2019. https://er.knutd.edu.ua/handle/123456789/13039.

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21

Zhang, Hao. "INVESTIGATION TO A COST-EFFECTIVE 3D MICROMACHINING METHOD." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1372250848.

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22

Bosch, David Dean 1958. "Derivation and application of effective parameters for modeling moisture flow in heterogeneous unsaturated porous media." Diss., The University of Arizona, 1990. http://hdl.handle.net/10150/191158.

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Spatial variability of porous media often prevents precise physical characterization of the system. In order to model moisture and solute transport through this media, certain sacrifices in precision must be made. Physical characteristics of the system must be averaged over large scales, lumping the small scale variability into the large scale characterization. Although this precludes a precise definition of the small scale flow characteristics, parameterization is much more attainable. This study addresses methods for determining effective hydraulic conductivity of unsaturated porous media. E

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23

Pendse, Nachiket Vishwas. "An effective dimensional inspection method based on zone fitting." Texas A&M University, 2004. http://hdl.handle.net/1969.1/3239.

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Coordinate measuring machines are widely used to generate data points from an actual surface. The generated measurement data must be analyzed to yield critical geometric deviations of the measured part according to the requirements specified by the designer. However, ANSI standards do not specify the methods that should be used to evaluate the tolerances. The coordinate measuring machines employ different verification algorithms which may yield different results. Functional requirements or assembly conditions on a manufactured part are normally translated into geometric constraints to which th

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24

Ramberg, Erik. "Creating an effective quality management method within software development." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-165338.

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This thesis answers how to create an effective quality assurance method within software development, especially games development. The work has mainly consisted of interviews with employees and others within the same business as well as studies of literature. The thesis also describes how the new quality management method got management acceptance, how it was implemented, what happened and recommendations. The work was conducted in 2007 and the result in this report is still, eight years later, used by the company.<br>Denna rapport berättar hur man skapar en effektiv kvalitetssäkringsmetod ino

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25

陳惠結 and Wai-kit Chan. "The most effective method to improve antiretroviral drug adherence." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40720329.

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26

Zhang, Runtong. "Measurement of effective diffusivity : chromatographic method (pellets & monoliths)." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608352.

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This thesis aims to find out the effective diffusivity (Deff) of a porous material – γ-alumina, using an unsteady state method with two inert gases at ambient condition with no reactions. For porous materials, Deff is important because it determines the amount of reactants that transfers to the surface of pores. When Deff is known, the apparent tortuosity factor of γ-alumina is calculated using the parallel pore model. The apparent tortuosity factor is important because: (a) it can be used to back-calculate Deff at reacting conditions; (b) once Deff with reactions is known, the Thiele modulus

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Chan, Wai-kit. "The most effective method to improve antiretroviral drug adherence." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40720329.

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Luong, Suzen. "Is arbitration an effective method to resolve employment disputes?" access full-text access abstract and table of contents, 2008. http://libweb.cityu.edu.hk/cgi-bin/ezdb/dissert.pl?ma-slw-b23454416a.pdf.

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Harmon, C. Reid. "IPU/LTB a method for reducing effective memory latency /." Available online, Georgia Institute of Technology, 2004:, 2003. http://etd.gatech.edu/theses/available/etd-04072004-180020/unrestricted/harmon%5Fc%5Fr%5F200312%Fphd.pdf.

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30

Ullsten, Henrik. "Barrier Plastics, Processing of Wheat Gluten and A New Method to Measure Permeability." Licentiate thesis, KTH, Fibre and Polymer Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1778.

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<p>One way to extend the shelf life for foodstuff is to usemodified atmosphere packaging (MAP). It is important that MAPare gas tight or in some rare cases permselective to preservethe right gas mix. To be able to determine how the gas contentchanges it is essential to know the gas permeability of thewhole packaging with effects from seals, folds and possibleplasticisation effects from the products.</p><p>In the first part of the study a new technique fordetermining oxygen and carbon dioxide permeability of flexiblepackaging was developed. The method was tested on very-lowdensity, low density

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31

Benrewin, Mabruk Ahmed. "Modelling of a new petrophysical method for measuring relative permeability and capillary pressure." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/679.

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32

Farah, Nicolas. "Flow Modelling in Low Permeability Unconventional Reservoirs." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066503/document.

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Les réservoirs non-conventionnels présentent un milieu fracturé à multi-échelles, y compris des fractures stimulées et des fractures naturelles, augmentant l'hétérogénéité et la complexité de la simulation de réservoir. Ce travail propose un modèle unique et simple tout en tenant compte des paramètres clés d'un réservoir, tels que l'orientation des fractures, l'anisotropie et la faible perméabilité du réservoir. L'échange matrice-fracture n'est pas correctement modélisé en utilisation les modèles Discrete Fracture Model (DFM) standards en raison de la très faible perméabilité. Dans ce travail

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33

Verbytska, A. "Inflation targeting as an effective method of ensuring price stability." Thesis, Sumy State University, 2016. http://essuir.sumdu.edu.ua/handle/123456789/48939.

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34

Hedlund, André. "Effective Finite Element Analysis Workflow for Structural Mechanics." Thesis, Uppsala universitet, Tillämpad mekanik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-254399.

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The Finite Element Method (FEM) is a technique for finding the approximate solution of differential equations. It is commonly used in structural analysis to evaluate the deformation and internal stresses of a structure that is subject to outer loads. This thesis investigates the Finite Element Analysis (FEA) workflow that is used at Andritz Hydro AB, with the objective to find solutions that make the workflow more time effective. The current workflow utilises Siemens NX and Salomé for pre- and post-processing, and Code Aster as the FEM solver. Two different approaches that improve the workflow

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35

Farah, Nicolas. "Flow Modelling in Low Permeability Unconventional Reservoirs." Electronic Thesis or Diss., Paris 6, 2016. http://www.theses.fr/2016PA066503.

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Les réservoirs non-conventionnels présentent un milieu fracturé à multi-échelles, y compris des fractures stimulées et des fractures naturelles, augmentant l'hétérogénéité et la complexité de la simulation de réservoir. Ce travail propose un modèle unique et simple tout en tenant compte des paramètres clés d'un réservoir, tels que l'orientation des fractures, l'anisotropie et la faible perméabilité du réservoir. L'échange matrice-fracture n'est pas correctement modélisé en utilisation les modèles Discrete Fracture Model (DFM) standards en raison de la très faible perméabilité. Dans ce travail

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VALVERDE, VIVIANA TORRALBA. "EFFECT OF THE COMPACTION METHOD ON THE PERMEABILITY OF AN ORGANIC COMPOUND-COLLUVIONAR SOIL MIXTURE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=9632@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O liner é um elemento de extrema importância no processo construtivo de um aterro sanitário, pois funciona como uma barreira capaz de impedir a percolação de agentes contaminantes através do subsolo. Os liners ou camadas impermeabilizantes são geralmente construídos a partir de materiais que possuem baixa permeabilidade. A escolha de um material adequado, assim como o controle dos processos construtivos são indispensáveis para garantir um bom desempenho da camada impermeabilizante. O processo de compactação é de extrema imp

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Sato, Shuji. "Effective three-dimensional electric field analysis by surface charge simulation method /." [S.l.] : [s.n.], 1987. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=8221.

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Andrikonis, Julius. "Effective Method to Obtain Terminating Proof-Search in Transitive Multimodal Logics." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20111227_091412-58067.

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In the dissertation epistemic logics with central agent interaction axiom are analysed. The research covers multimodal logics Kn, Tn, K4n and S4n. The aim of the work is finite derivation search sequent calculi for the mentioned logics. A new method to obtain the termination of derivation search is presented in the thesis and this method is applied to the mentioned logics as well as to monomodal logics K4 and S4.<br>Disertacijoje nagrinėjamos žinių logikos su centrinio agento sąveikos aksioma. Tyrimas apima multimodalines logikas Kn, Tn, K4n ir S4n. Disertacijos tikslas – baigtinės išvedimo pa

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Pittalis, Stefano [Verfasser]. "Spinor-orbital functionals and the optimized effective potential method / Stefano Pittalis." Berlin : Freie Universität Berlin, 2008. http://d-nb.info/1023049325/34.

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Zhang, Xiujuan, and 張秀娟. "An effective design method for components made of a multiphase perfectmaterial." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30267018.

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Thatcher, William H. IV. "An Inquiry of the Conventional Cavity Perturbation Method, with Direct Application to Various Liquid Samples." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1471347258.

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Demirtas, Afsin Emrah. "A Comparative Study On Direct Analysis Method And Effective Length Method In One-story Semi-rigid Frames." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614723/index.pdf.

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For steel structures, stability is a very important concept since many steel structures are governed by stability limit states. Therefore, stability of a structure should be assessed carefully considering all parameters that affect the stability of the structure. The most important of these parameters can be listed as geometric imperfections, member inelasticity and connection rigidity. Geometric imperfections and member inelasticity are taken into account with the stability method used in the design. At this point, the stability methods gain importance. The Direct Analysis Method, the default

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Lai, Benjamin Ph D. Massachusetts Institute of Technology. "An effective overlapping finite element method : the method of finite spheres for three-dimensional linear elasticity problems." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/103439.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2016.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from student-submitted PDF version of thesis.<br>Includes bibliographical references (pages 119-123).<br>The method of finite spheres is an effective overlapping finite element method developed to overcome challenges in mesh-based numerical methods. Commonly recognized challenges include mesh generation for geometrically complex domains

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Skoglund, Oskar, and Daniel Samvin. "Design of slender steel members : A comparison between the reduced stress method and the effective width method." Thesis, KTH, Bro- och stålbyggnad, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-189029.

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As of now, the most common way in Sweden, to address the issue of local buckling of steelstructures is through the procedure called the effective width method. A less commonprocedure for dealing with local buckling is the reduced stress method. The benefit of thelatter method is that, when combined with finite element analysis, results in a less tediousdesign process. However, this method is often labelled as a method that results in anoverconservative design. Therefore, the purpose of this report is to compare and evaluate thereduced stress method against the effective width method and nonlin

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45

Genova, Barazarte Ezequiel. "Stochastic modeling of the variation of velocity and permeability as a function of effective pressure using the Bed-of-Nails asperity-deformation model." [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-1525.

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Njoku, Chinwe Christiana. "Heterogeneous mixtures for synthetic antenna substrates." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12074.

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Heterogeneous mixtures have the potential to be used as synthetic substrates for antenna applications giving the antenna designer new degrees of freedom to control the permittivity and/or permeability in three dimensions such as by a smooth variation of the density of the inclusions, the height of the substrate and the manufacture the whole antenna system in one process. Electromagnetic, fabrication, environmental, time and cost advantages are potential especially when combined with nano-fabrication techniques. Readily available and cheap materials such as Polyethylene and Copper can be used i

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Thein, Chung Ket. "An effective optimisation method for multifactor and reliability-related structural design problems." Thesis, University of Hull, 2011. http://hydra.hull.ac.uk/resources/hull:5338.

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This thesis first presents a systematic design procedure which satisfies the required strength and stiffness, and structural mass for conceptual engineering structural designs. The procedure employs a multi-objective and multi-disciplinary (MO–MD) optimisation method (multifactor optimisation of structure techniques, MOST) which is coupled with finite element analysis (FEA) as an analysis tool for seeking the optimum design. The effectiveness of the MOST technique is demonstrated in two case studies. Next, a reliability-related multi-factor optimisation method is proposed and developed, repres

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Leong, Mei-kid, and 梁美潔. "Development of an effective method to tag escherichia coli chromosomalgenes by recombineering." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30430811.

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Yeh, T. C. Jim, Minghui Jin, and Samuel Hanna. "AN ITERATIVE STOCHASTIC INVERSE METHOD: CONDITIONAL EFFECTIVE TRANSMISSIVITY AND HYDRAULIC HEAD FIELDS." Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1995. http://hdl.handle.net/10150/614150.

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An iterative stochastic approach is developed to estimate transmissivity and head distributions in heterogeneous aquifers. This approach is similar to the classical cokriging technique and it uses a linear estimator that depends on the covariances of transmissivity and hydraulic head and their cross -covariance. The linear estimator is, however, improved successively by solving the governing flow equation and by updating the covariances and cross -covariance function of transmissivity and hydraulic head fields in an iterative manner. As a result, the nonlinear relationship between transm

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Thomas, Angeleena. "Towards an effective automated interpretation method for modern hydrocarbon borehole geophysical images." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/5855.

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Borehole imaging is one of the fastest and most precise methods for collecting subsurface data that provides high resolution information on layering, texture and dips, permitting a core-like description of the subsurface. Although the range of information recoverable from this technology is widely acknowledged, image logs are still used in a strictly qualitative manner. Interpreting image logs manually is cumbersome, time consuming and is subjective based on the experience of the interpreter. This thesis outlines new methods that automate image log interpretation and extract subsurface lithofa

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