Log in

Relevant bibliographies by topics / Water based drilling fluid / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Water based drilling fluid.

Dissertations / Theses on the topic 'Water based drilling fluid'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 42 dissertations / theses for your research on the topic 'Water based drilling fluid.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Kristensen, Aleksander. "Flow properties of water-based drilling fluids." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for petroleumsteknologi og anvendt geofysikk, 2013. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-23107.

Full text

Abstract:

The objective of this master thesis was to investigate the flow properties of water based drilling fluids, utilizing measurements in both the micro and macro scale. The research was performed on two realistic drilling fluids by the use of a viscometer, a rheometer and a realistic flow loop, where the latter represents the macro scale. The research outcome could possibly improve the understanding of flow behavior in wellbores, and remove uncertainties associated with annular friction. The two fluids utilized in the research was made up with the goal of having equal rheological qualities, when

APA, Harvard, Vancouver, ISO, and other styles

2

Peng, Shuang Jiu. "Filtration properties of water based drilling fluids." Thesis, Heriot-Watt University, 1990. http://hdl.handle.net/10399/871.

Full text

Abstract:

This thesis reports an experimental and theoretical study on filtration properties of water based drilling fluids under dynamic and static conditions. The tested muds cover Freshwater/Gypsum/Lignosulphonate mud and SeawaterlKCLlPolymer mud, bariteweighted and unweighted. The effects of the solid concentration, pressure and shear rate on the filter cake characteristics and the erodability were investigated. For static filtration experiments, all tests were conducted for two hours and the spurt loss, the filter cake thickness, the ratio of wet to dry cake mass and the cumulative filtrate volume

APA, Harvard, Vancouver, ISO, and other styles

3

Sia, Luke Kennedy Si Lung. "Improving rheological and filtration properties of water based drilling fluid using palm derived methyl ester sulphonate surfactant and waste polystyrene nano-particle." Thesis, Curtin University, 2018. http://hdl.handle.net/20.500.11937/74950.

Full text

Abstract:

A new mud was formulated to improve the drilling efficiency under HPHT condition using green surfactant and nano-polystyrene. A series of rheological and filtration tests were done to ensure that the mud can maintain its integrity once used in ultra-deep wells. Scanning electron microscope based image analysis was done to evaluate the plugging abilities of nanopolystyrene. It was found that the nano-polystyrene is able to improve the performance of the mud under different conditions.

APA, Harvard, Vancouver, ISO, and other styles

4

Gurbuz, Berkay. "Experimental Characterization Of Some Water Soluble Polymers Used In Drilling And Completion Fluids." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614146/index.pdf.

Full text

Abstract:

Properly preparing the drilling fluid is an essential part of any successful drilling operation, especially in complex operations like deviated and horizontal drilling. Understanding the flow behavior of the polymers used in the drilling fluids under different conditions takes a key part in this preparation. In this study, shear rheology of some traditionally used water soluble polymers in drilling and completion fluids<br>namely PAC (polyanionic cellulose) and xanthan gum, were investigated experimentally. Instead of an oilfield standard Fann Model 35 Viscometer, an Ofite Model 900 Viscomete

APA, Harvard, Vancouver, ISO, and other styles

5

Sidi, Purnomo. "Investigating the suitability of biomass Eichhornia crassipes as a lost circulation material in water-based drilling muds." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=239377.

Full text

Abstract:

This study investigated the performance of the biomass Eichhornia crassipes plant (ECP) as an additive in water-based drilling-mud. ECP is an invasive plant of fresh water ecosystems, so its use in drilling operations provides a low-cost, sustainable option that has off-site environmental benefits. Mechanical tests were conducted on ECP fibres to determine their stiffness under dried and water-wet conditions. Initial tensile tests on nylon fibre determined potential experimental artefacts with the experimental approach. The dried fibres had a water content of 8.163 wt. % (SE 0.636), whereas th

APA, Harvard, Vancouver, ISO, and other styles

6

Adegbotolu, Urenna V. "Demulsification and recycling of spent oil based drilling fluid as nanofiller for polyamide 6 nanocomposites." Thesis, Robert Gordon University, 2016. http://hdl.handle.net/10059/3136.

Full text

Abstract:

Spent oil based drilling fluid and cutting wastes are global liabilities due to their hazardous hydrocarbon content which impacts negatively on flora, fauna, and global carbon footprint. The formulation of two demulsifiers to ensure chemically enhanced phase separation of this waste into oil, water and solid components was successfully carried out in addition to recycling the solid phase into PA6 nanocomposite materials. Initial characterisation of the untreated waste was carried out by Fourier Transform Infra Red (FTIR) for total petroleum hydrocarbon (TPH) analysis, Inductively coupled plasm

APA, Harvard, Vancouver, ISO, and other styles

7

Ballard, Tracey Jane. "An experimental study of some mechanisms of formation damage caused by oil-based drilling fluid filtrate." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47762.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Arthur, Kevin Gordon. "An experimental and theoretical study of the filtration characteristics of water-based drilling muds." Thesis, Heriot-Watt University, 1986. http://hdl.handle.net/10399/1082.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Lundell, Christian. "Water simulation for cell based sandbox games." Thesis, Linköpings universitet, Institutionen för systemteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-108828.

Full text

Abstract:

This thesis work presents a new algorithm for simulating fluid based on the Navier-Stokes equations. The algorithm is designed for cell based sandbox games where interactivity and performance are the main priorities. The algorithm enforces mass conservation conservatively instead of enforcing a divergence free velocity field. A global scale pressure model that simulates hydrostatic pressure is used where the pressure propagates between neighboring cells. A prefix sum algorithm is used to only compute work areas that contain fluid.

APA, Harvard, Vancouver, ISO, and other styles

10

Kahvecioglu, Alper. "Designing Lost Circulation Pills For Polymer Based Drill-in Fluids." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12610226/index.pdf.

Full text

Abstract:

Specially designed non-damaging lost circulation pills (LCP) are being effectively applied for drilling depleted zones worldwide. Optimizing the LCP compositions stop the lost circulation effectively and protect the production zone from liquid and solids invasion significantly. Shape, particle size distribution and concentration of the lost circulation materials (LCM) are key parameters determining the effectiveness of LCP. In this study, the Permeability Plugging Apparatus (PPA) is utilized to evaluate effectiveness of various LCM&rsquo<br>s in curing the lost circulation. Sized calcium carbo

APA, Harvard, Vancouver, ISO, and other styles

11

Strachan, Maia Fiona. "Studies on the impact of a water-based drilling mud weighting agent (Barite) on some Benthic invertebrates." Thesis, Heriot-Watt University, 2010. http://hdl.handle.net/10399/2334.

Full text

Abstract:

A comparative study was carried out to observe effects of standard grade and fine grade barite on the filtration rates of four suspension feeding bivalves, Modiolus modiolus, Dosinia exoleta, Venerupis senegalensis and Chlamys varia. Standard grade barite, the most commonly used weighting agent in water-based drilling mud, was responsible for altering the filtration rates of the four bivalve species and damaging the gill structure. The four bivalves were exposed to 0.5mm, 1.0mm and 2.0mm daily depth equivalents of standard grade barite, which permanently remained in suspension. All three barit

APA, Harvard, Vancouver, ISO, and other styles

12

Wang, Huamin. "Practical water animation using physics." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31745.

Full text

Abstract:

Thesis (Ph.D)--Computing, Georgia Institute of Technology, 2010.<br>Committee Chair: Greg Turk; Committee Member: C. Karen Liu; Committee Member: Irfan Essa; Committee Member: Jarek Rossignac; Committee Member: Peter J. Mucha. Part of the SMARTech Electronic Thesis and Dissertation Collection.

APA, Harvard, Vancouver, ISO, and other styles

13

Mukhtasor. "Hydrodynamic modeling and ecological risk-based design of produced water discharge from an offshore platform." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ62454.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Flynn, Sean A. "Adaptive Fluid Simulation Using a Linear Octree Structure." BYU ScholarsArchive, 2018. https://scholarsarchive.byu.edu/etd/6837.

Full text

Abstract:

An Eulerian approach to fluid flow provides an efficient, stable paradigm for realistic fluid simulation. However, its traditional reliance on a fixed-resolution grid is not ideal for simulations that simultaneously exhibit both large and small-scale fluid phenomena. Octree-based fluid simulation approaches have provided the needed adaptivity, but the inherent weakness of a pointer-based tree structure has limited their effectiveness. We present a linear octree structure that provides a significant runtime speedup using these octree-based simulation algorithms. As memory prices continue to dec

APA, Harvard, Vancouver, ISO, and other styles

15

Nixon, William. "Unsteady friction under the influence of external flows, and the implications to transient-based leak detection methods /." View abstract or full-text, 2005. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202005%20NIXON.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Wolmerud, Markus. "Real-Time Fluid Simulation and Visualization." Thesis, Linköpings universitet, Medie- och Informationsteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119937.

Full text

Abstract:

This thesis presents a method based on Smoothed Particle Hydrodynamics to simulate sparse particle systems with fluid like properties in real-time. The simulation supports interactions with terrain and objects and is scaled depending on activity of the fluid. We use a carpet method on the GPU to visualize the water surface with translucency, reflection, refraction and added topology. Splash effects and foam are imitated and added as a last step.

APA, Harvard, Vancouver, ISO, and other styles

17

Hosseini, Kordkheili Seyed. "A new continuum based non-linear finite element formulation for modeling of dynamic response of deep water riser behavior." Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/4068.

Full text

Abstract:

The principal objective of this investigation is to develop a nonlinear continuum based finite element formulation to examine dynamic response of flexible riser structures with large displacement and large rotation. Updated Lagrangian incremental approach together with the 2nd Piola-Kirchhoff stress tensor and the Green-Lagrange strain tensor is employed to derive the nonlinear finite element formulation. The 2nd Piola-Kirchhoff stress and the Green-Lagrange strain tensors are energy conjugates. These two Lagrangian tensors are not affected by rigid body rotations. Thus, they are used to descr

APA, Harvard, Vancouver, ISO, and other styles

18

Suara, Kabir Adewale. "Development and use of GPS-based technology to study dispersion in shallow water." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/102841/1/Kabir%20Adewale_Suara_Thesis.pdf.

Full text

Abstract:

This project was a step forward for the measurement and management of shallow water estuaries using satellite technology. Newly developed Global Positioning System (GPS) high resolution drifters were used to investigate the flow field and the spreading behaviours of passive particles. It identified the dominant mechanisms responsible for the tidal scale spreading with a focus on tidal estuaries in Southeast Queensland. Importantly, this study provides a unique moving sensor (Lagrangian) approach to strengthen current modelling efforts in prediction of the transport of materials in tidal estuar

APA, Harvard, Vancouver, ISO, and other styles

19

Golshan, Roozbeh. "Residual-based Variational Multiscale LES with Wall-modeling for Oceanic Boundary Layers in Shallow Water." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5489.

Full text

Abstract:

Large-eddy simulation (LES) of wind and wave forced oceanic turbulent boundary layers is performed using the residual-based variational multiscale method (RBVMS) and near-wall modeling. Wind and surface gravity wave forcing generates Langmuir turbulence characterized by Langmuir circulation (LC) with largest scales consisting of streamwise vortices aligned in the direction of the wind, acting as a secondary flow structure to the primary wind-driven component of the flow. The LES here is representative of a shallow water continental shelf flow (10 to 30 meters in depth) far from lateral boundar

APA, Harvard, Vancouver, ISO, and other styles

20

Gude, Manjiri. "Effect of lipid-based formulation on the solubilization patterns if poorly water-soluble drugs." Thesis, Uppsala universitet, Institutionen för farmaci, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-445332.

Full text

Abstract:

Poorly water-soluble drugs (PWSDs), to date, require advanced formulation techniques to improve solubility and achieve the required plasma concentration to show a therapeutic effect when orally administered. Lipid-based formulations (LBFs) are an enabling strategy that is being used to improve the oral delivery of PWSDs. The aim of this study was to investigate the effect of lipid-based formulation, Type IIIA-LC, on the solubilization patterns of PWSDs, namely, carvedilol and felodipine. Solubility studies, for both drugs, were performed with LBF dispersed in -1) dog intestinal fluid (DIF), an

APA, Harvard, Vancouver, ISO, and other styles

21

Alagbe, Solomon Oluyemi. "Experimental and numerical investigation of high viscosity oil-based multiphase flows." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/10495.

Full text

Abstract:

Multiphase flows are of great interest to a large variety of industries because flows of two or more immiscible liquids are encountered in a diverse range of processes and equipment. However, the advent of high viscosity oil requires more investigations to enhance good design of transportation system and forestall its inherent production difficulties. Experimental and numerical studies were conducted on water-sand, oil-water and oilwater- sand respectively in 1-in ID 5m long horizontal pipe. The densities of CYL680 and CYL1000 oils employed are 917 and 916.2kg/m3 while their viscosities are 1.

APA, Harvard, Vancouver, ISO, and other styles

22

Bayagbon, Anthony Mamurhomu. "Impact assessment of the environmental protection policies in the upstream oil industry in Nigeria / A.M. Bayagbon." Thesis, North-West University, 2011. http://hdl.handle.net/10394/6276.

Full text

Abstract:

The need for energy and the associated economic benefits from the oil and gas deposits found mainly in the Niger Delta region of Nigeria necessitated the exploration and exploitation activities being carried out by the oil and gas Companies. However, these exploration and exploitation activities due to their unpredictable nature have a huge potential for environmental pollution as been experienced in the form of oil spills, gas flaring, irresponsible disposal of waste and several other activities that have resulted in the environmental degradation of the Niger Delta region. In the light of the

APA, Harvard, Vancouver, ISO, and other styles

23

Marsh, Richard. "Experimental analysis of oil based cavitation peening in air." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43602.

Full text

Abstract:

Oil Jet Cavitation Peening in Air (OPA) is capable of inducing compressive residual stress in standard aerospace materials. This paper demonstrates the process capabilities of OPA on Al 2024-T3. Specifically, changes in the workpiece residual stress, microhardness, mass loss and surface roughness are investigated as a function of the control parameters for the system. Additionally, the paper identifies a method to monitor the process in situ through the use of high frequency acoustic emission sensors. The results indicate the OPA process is capable of generating residual stresses comparable t

APA, Harvard, Vancouver, ISO, and other styles

24

Jacobson, Felix. "Wear and degradation of Co, Fe and Ni-based cemented carbides against sandstone and granite." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-365746.

Full text

Abstract:

This diploma work is performed at Sandvik Mining and Rock Technology, Rock Tools division, a world-leading mining equipment manufacturer. The aim is to study the wear of cemented carbide rock drill inserts worn against granite and sandstone countersurfaces, with focus on the impact of binder phase composition and flushing agent chemistry. A brief introduction to rock drilling, cemented carbides and the wear and degradation mechanisms of cemented carbides in rock drilling is given. Wear is induced in a lab test by sliding cemented carbide inserts against granite and sandstone countersurfaces wh

APA, Harvard, Vancouver, ISO, and other styles

25

Grosche, Lucas Caetano. "Study of the interactions between emulsion flow and a spectrometer probe based on numerical simulations." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-17102014-114519/.

Full text

Abstract:

In the present work, the flow behavior of an oil-in-water emulsion around and inside the measurement chamber of an in-line optical sensor probe is studied. The emulsion consists of a metalworking fluid, with oil droplets diameter ranging from 100 nanometers to 100 micrometers. The design of the UV-Vis light spectrometer probe is in accordance with the concept proposed in the research project named EPM (Emulsion Process Monitor in Metalworking Processes), carried out within the scope of the BRAGECRIM program between the University of São Paulo and the University of Bremen. This study is based o

APA, Harvard, Vancouver, ISO, and other styles

26

Vidal, Emanuella Layne Ferreira. "Avalia??o do comportamento de argila ativada na presen?a de ?gua destilada, solu??es salinas e inibidores de hidrata??o cati?nicos." Universidade Federal do Rio Grande do Norte, 2009. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17603.

Full text

Abstract:

Made available in DSpace on 2014-12-17T15:41:44Z (GMT). No. of bitstreams: 1 EmanuellaLFV.pdf: 2331935 bytes, checksum: 3f4df9b602349e41bf8ab4d2c561b59d (MD5) Previous issue date: 2009-01-14<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>The clay swelling is today one of the major problems during the well drilling. Nearly 50% of clays that constitute shale expand easily in the presence of water molecules. During the drilling of a geological formation containing swelling clays, when is feasible the use of water base fluids, it is necessary to apply clay inhibitors. This av

APA, Harvard, Vancouver, ISO, and other styles

27

Elkatatny, Salaheldin Mahmoud. "New Techniques to Characterize and Remove Water-Based Drilling Fluids Filter Cake." Thesis, 2013. http://hdl.handle.net/1969.1/149400.

Full text

Abstract:

Filter cake characterization is very important in drilling and completion operations. Heterogeneity of the filter cake plays a key role in the design of chemical treatments needed to remove the filter cake. The objectives of this study are to characterize the filter cake under static and dynamic conditions, evaluate the using of polylactic acid and chelating agents to remove calcium carbonate-based filter cake, assess glycolic acid to remove Mn3O4-based filter cake, and evaluate ilmenite as a weighting material for water-based drilling fluid. In order to characterize the filter cake, compute

APA, Harvard, Vancouver, ISO, and other styles

28

Zigmond, Brandon. "Experimental Analysis of Water Based Drilling Fluid Aging Processes at High Temperature and High Pressure Conditions." Thesis, 2012. http://hdl.handle.net/1969.1/ETD-TAMU-2012-08-11629.

Full text

Abstract:

In efforts to render the safest, fastest, and most cost efficient drilling program for a high temperature and high pressure (HT/HP) well the maximization of drilling operational efficiencies is key. Designing an adequate, HT/HP well specific, drilling fluid is of most importance and a technological challenge that can greatly affect the outcome of the overall operational efficiency. It is necessary to have a sound fundamental understanding of the behavior that water-based muds (WBM) exhibit when exposed to HT/HP conditions. Therefore, in order to adequately design and treat a WBM for a HT/HP we

APA, Harvard, Vancouver, ISO, and other styles

29

Ravi, Ashwin. "Experimental Assessment of Water Based Drilling Fluids in High Pressure and High Temperature Conditions." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-08-9925.

Full text

Abstract:

Proper selection of drilling fluids plays a major role in determining the efficient completion of any drilling operation. With the increasing number of ultra-deep offshore wells being drilled and ever stringent environmental and safety regulations coming into effect, it becomes necessary to examine and understand the behavior of water based drilling fluids - which are cheaper and less polluting than their oil based counterpart - under extreme temperature and pressure conditions. In most of the existing literature, the testing procedure is simple - increase the temperature of the fluid in step

APA, Harvard, Vancouver, ISO, and other styles

30

Al, Mojil Abdullah Mohammed A. "Removal of Filter Cake Generated by Manganese Tetraoxide Water-based Drilling Fluids." Thesis, 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8335.

Full text

Abstract:

Three effective solutions to dissolve the filter cake created by water-based drilling fluids weighted with Mn3O4 particles were developed. Hydrochloric acid at concentration lower than 5 wt% can dissolve most of Mn3O4-based filter cake. Dissolving the filter cake in two-stage treatment of enzyme and organic acid was effective and eliminated the associated drawbacks of using HCl. Finally, combining low and safe concentration of HCl with an organic acid in one-stage treatment was very effective. Hydrochloric acid (10-wt%) dissolved 78 wt% of Mn3O4-based filter cake at 250°F after 28 hours soakin

APA, Harvard, Vancouver, ISO, and other styles

31

Dharwadkar, Pavan S. "Analyzing the Limits and Extent of Alpha-Amylase Catalyzed Removal of Starch-Based Filter Cake." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-12-10422.

Full text

Abstract:

The ability of starch to impart functions including fluid-loss control, cuttings transport, and rheological characteristics to water-based drilling fluids has led to its widespread use in the oil industry. The filter cake deposited by these drilling fluids often employs sized solid particles and starch to inhibit fluid loss into the formation. This inherently causes damage to the formation by impairing the permeability and must be removed before production. An alpha-amylase enzyme treatment was found to provide an effective approach to degrading starch in filter cake. In this work, an alpha-

APA, Harvard, Vancouver, ISO, and other styles

32

Teng, Wei-Chun, and 滕薇鈞. "Particle-Based fluid Simulation for Sand Sculpture and Water." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/78299101882064394972.

Full text

Abstract:

碩士<br>國立交通大學<br>多媒體工程研究所<br>98<br>In this thesis, we present an effective algorithm to simulate the interaction between sand sculptures and water. Recently, fluids simulation is an important topic in computer animation and games. However, the interaction between sand sculptures and water is still a complex problem. We propose a unified Smoothed Particle Hydrodynamics framework for simulating both fluids and sand particles. Since the sand and water are sampled by a large number of particles, we use an adaptive sampling algorithm to simulate particles more effectively. Moreover, we also consider

APA, Harvard, Vancouver, ISO, and other styles

33

Kraussman, Andrew. "The Use of WBM to Improve ROP in HTHP/Hard Rock Environments." Thesis, 2011. http://hdl.handle.net/1969.1/ETD-TAMU-2011-05-9318.

Full text

Abstract:

Modern day oil & gas well costs are driven by drilling performance as time becomes the dominant capital expense source. The ability to lower drilling costs becomes paramount when tight economic margins and high uncertainties/risk exist. Penetration rate decreases drastically in ultra deep formations, and substantial time is spent drilling the deepest section of these wells. Therefore, significant cost savings may be obtained through an improvement in penetration rate in deep formations. This paper shows that in HTHP (High Temperature High Pressure) hard shale/sand environments that PDC (Po

APA, Harvard, Vancouver, ISO, and other styles

34

Ortega, Edwin Yamid. "Inversion-based petrophysical interpretation of multi-detector logging-while-drilling sigma measurements." Thesis, 2014. http://hdl.handle.net/2152/24939.

Full text

Abstract:

Pulsed-neutron borehole measurements involve a physical process in which a source emits energetic neutrons that lose energy upon collisions with formation nuclei, and are eventually captured by a nucleus to form a heavier, excited state. The excited nucleus decays to its ground state by the emission of gamma rays. Both thermal-neutron and gamma-ray populations decay with time at a rate defined by Sigma, which is a nuclear property that quantifies a material’s ability to capture thermal neutrons. The large contrast in Sigma between hydrocarbon and salty connate water enables calculations of wat

APA, Harvard, Vancouver, ISO, and other styles

35

McLaren, James Richard. "An investigation into a desalination process based on dispersed multiphase flow through a transonic nozzle." Thesis, 2012. http://hdl.handle.net/10210/5477.

Full text

Abstract:

M. Ing.<br>Southern Africa faces an increasingly serious shortage of potable water and will continue to do so for the foreseeable future. Desalination is a process whereby dissolved solids are removed out of a contaminated water source to produce potable water. However, desalination carries an unavoidable energy cost per unit of potable water produced. Minimising this energy cost is an important goal towards making desalination a practical technology for widespread use. A desalination process is proposed by the author which is based on the injection of a brine spray into vacuum conditions. Alt

APA, Harvard, Vancouver, ISO, and other styles

36

Jones, Christopher Robert. "Treatment of oily drill cuttings slurries using supercritical carbon dioxide." Master's thesis, 2010. http://hdl.handle.net/10048/1062.

Full text

Abstract:

Thesis (M. Sc.)--University of Alberta, 2010.<br>Title from pdf file main screen (viewed on June 30, 2010). A thesis submitted to the Faculty of Graduate Studies and Research in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engineering, Department of Civil and Environmental Engineering, University of Alberta. Includes bibliographical references.

APA, Harvard, Vancouver, ISO, and other styles

37

Dalmazzone, Didier, Néjib Hamed, Danièle Clausse, Isabelle Pezron, and Anh-Tuan Luong. "STUDY OF THE KINETICS OF FORMATION OF TRICHLOROFLUORO-METHANE HYDRATES AND METHANE HYDRATES IN WATER-IN-OIL EMULSION BY MICROCALORIMETRY." 2008. http://hdl.handle.net/2429/1194.

Full text

Abstract:

Differential scanning calorimetry has been used to study the kinetics of formation of clathrate hydrates in the systems water-CCl3F and water-CH4, in which the water phase was dispersed in an oil phase in the form of an emulsion. CCl3F hydrates were formed at ambient pressure and constant temperatures of -10, -15 and -20 °C. The results showed that the crystallization of both ice and hydrate are in competition at the lowest temperature, whereas only hydrate is formed at -10 or -15 °C. CH4 hydrates were studied using a high-pressure DSC in the range 10 to 40 MPa, at various temperatures. At hig

APA, Harvard, Vancouver, ISO, and other styles

38

Bin, Dou, Ling Zhang, Xiang Wu, Fulong Ning, Yunzhong Tu, and Guosheng Jiang. "EFFECT OF SDS AND THF ON FORMATION OF METHANE-CONTAINING HYDRATES IN PURE WATER." 2008. http://hdl.handle.net/2429/1067.

Full text

Abstract:

Gas hydrate formation generally involves gas dissolution, formation of nuclei and growth of new nucleus. On condition of synthesizing experiments without agitation, the formation of hydrate nuclei is comparatively difficult and needs an induction period which is considerably uncertain and random. Some additives such as surfactant sodium dodecyl sulfate (SDS) can increase the formation rate and reduce the induction time. A hydrate formation and mini drilling experimental system was used to carry on methane hydrate formation experiments with small quantity of SDS and SDS- tetrahydrofuran(THF) in

APA, Harvard, Vancouver, ISO, and other styles

39

Zhang, Jianping. "An Integrated Design Approach for Improving Drinking Water Ozone Disinfection Treatment Based on Computational Fluid Dynamics." Thesis, 2006. http://hdl.handle.net/10012/2670.

Full text

Abstract:

Ozonation is currently considered as one of the most effective microbial disinfection technologies due to its powerful disinfection capacity and reduction in levels of chlorinated disinfection by-products (DBP). However, ozonation of waters containing bromide can produce bromate ion above regulated levels, leading to tradeoffs between microbial and chemical risks. In efforts to meet increasingly stringent drinking water regulations and to be cost-effective, water suppliers are required to optimize ozone dosage. Therefore, there is a need to develop a robust and flexible tool to accurately desc

APA, Harvard, Vancouver, ISO, and other styles

40

Joseph, Sony. "Towards ion channel based nanofluidic devices : simulations of water and electrolyte transport in nanotubes and channels /." 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3337814.

Full text

Abstract:

Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2008.<br>Source: Dissertation Abstracts International, Volume: 69-11, Section: B, page: 7098. Adviser: Narayana R. Aluru. Includes bibliographical references (leaves 130-140) Available on microfilm from Pro Quest Information and Learning.

APA, Harvard, Vancouver, ISO, and other styles

41

Nimmala, Seshu B. "An efficient high-performance computing based three-dimensional numerical wave basin model for the design of fluid-structure interaction experiments." Thesis, 2010. http://hdl.handle.net/1957/18829.

Full text

Abstract:

Fluid-structure interaction (FSI) is an interesting and challenging interdisciplinary area comprised of fields such as engineering- fluids/structures/solids, computational science, and mathematics. FSI has several practical engineering applications such as the design of coastal infrastructure (such as bridges, levees) subjected to harsh environments from natural forces such as tsunamis, storm surges, etc. Development of accurate input conditions to more detailed and complex models involving flexible structures in a fluid domain is an important requirement for the solution of such problems. FSI

APA, Harvard, Vancouver, ISO, and other styles

42

Wilson, Derek Alan. "A Dredging Knowledge-Base Expert System for Pipeline Dredges with Comparison to Field Data." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-12-8653.

Full text

Abstract:

A Pipeline Analytical Program and Dredging Knowledge{Base Expert{System (DKBES) determines a pipeline dredge's production and resulting cost and schedule. Pipeline dredge engineering presents a complex and dynamic process necessary to maintain navigable waterways. Dredge engineers use pipeline engineering and slurry transport principles to determine the production rate of a pipeline dredge system. Engineers then use cost engineering factors to determine the expense of the dredge project. Previous work in engineering incorporated an object{oriented expert{system to determine cost and scheduling

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!