Relevant bibliographies by topics / HTHP Viscometer

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Academic literature on the topic 'HTHP Viscometer'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

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Journal articles on the topic "HTHP Viscometer"

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Memon, Khalil Rehman, Aftab Ahmed Mahesar, Shahzad Ali Baladi, and Muhannad Talib Sukar. "Analyzing Cement Rheological Properties Using Different Additive Schemes at High Pressure and High Temperature Conditions." Mehran University Research Journal of Engineering and Technology 39, no. 3 (July 1, 2020): 466–74. http://dx.doi.org/10.22581/muet1982.2003.02.

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The experimental study was conducted on rheological properties in laboratory to measure the integrity of cement slurry. Three samples were used and analyzed at different parameters to check the elasticity of cement slurry. Additives with various concentrations, i.e. silica fume % BWOC (Present by Weight on Cement) (15, 17, 19 and 21), dispersant % Wt (Percent Weight) (0.21, 0.26 and 0.31) and additional 1; % Wt of fluid losscontrol were used to improve the performance of the cement slurry at the temperature of 123oC. The results have shown that increase in the concentration of dispersants that have caused to decrease in the Plastic Viscosity (PV), Yield Point (YP) and GS (Gel Strength). The rheological properties of cement were improved with the addition of fluid loss control additive in 21 % BWOC (Present by Weight on Cement) silica fume increase the water quantity in cement slurry that improve its durability and to reduce the strength retrogression in High Temperature High Pressure (HTHP) environment. Results were achieved through HTHP OFITE Viscometer (Model 1100).
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Falih, Ghufran Falih, Asawer A. Alwasiti Alwasiti, and Nada S. Alzubaidi Alzubaidi. "Improving the Performance of Drilling Fluid Using MgO Nano Particles." Journal of Petroleum Research and Studies 8, no. 3 (May 6, 2021): 179–93. http://dx.doi.org/10.52716/jprs.v8i3.278.

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One of the most important factors that cause formation damage is drilling fluidinvasion caused by mud filtration. Hence, it is essential to minimize the mud filtration inorder to reduce its damage to the formation using drilling fluid additives that control andminimize the filtration rate. Magnesium Oxide (MgO) nanoparticles at different masses(0.01, 0.05, 0.07, 0.1, and 0.2) gm with water base mud have been investigated in thisresearch to measure its effect on the filtration rate. Four types of drilling fluid are used inthis research; API water base mud WBM, Saturated salt water mud, DURA THERM mudand polymer mud. Filtration rate was tested under high temperature high pressure (HTHP)conditions; at (75 and 100) C and (500 psi), and at room temperature and pressure at (100psi). The viscosity of all drilling fluid types is measured using a rotational viscometer atroom temperature and atmospheric pressure. In general, the results showed that addingMgO nano particle helped in reducing the filtration rate of drilling fluid, the best resultswere gained in DURA THERM mud and Saturated Salt Water Mud at MgOconcentrationof 0.07gm and 0.2gm, respectively; where the filtrate reduction 60% at 100C. Also, MgO addition improves rheological properties and drilling fluid stability
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Zhu, Jingxi, Jinichiro Nakano, Tetsuya Kenneth Kaneko, Haoyuan Mu, James P. Bennett, Kyei-Sing Kwong, Peter Rozelle, and Seetharaman Sridhar. "Viscosity Determination of Molten Ash from Low-Grade US Coals." High Temperature Materials and Processes 31, no. 4-5 (October 30, 2012): 569–80. http://dx.doi.org/10.1515/htmp-2012-0094.

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AbstractIn entrained slagging gasifiers, the fluidity of the molten ash is a critical factor for process control since it affects slag formation, the capture of inorganic constituents, refractory wear, and slag drainage along the gasification chamber walls. The use of western coal, or mixtures of eastern and western coals as gasifier feedstock, is likely to occur as western coals become available and technological issues that hinder their use are being resolved. In the present work, the viscosity of synthetic slags with ash chemistries simulating the western U.S. coals, was experimentally measured at a Po2 = 10−8 atm in the temperature range of 1773–1573 K (1500–1300 °C) using a rotating-bob viscometer. Alumina spindles and containment crucibles of both alumina and zirconia were used. Crystallization studies of this slag using a confocal scanning laser microscope found that a (Mg,Fe)Al2O4-based spinel precipitated at temperatures below 1723 K (1450 °C), and this agreed with FactSage equilibrium phase prediction. The same spinels were observed in the post-viscometry experiment slags when ZrO2 crucibles were used and assumed to be in equilibrium with the slag at the higher temperatures. Zirconia dissolution resulted in a slight increase in the solid fraction present in slags at lower temperatures, compared to spinel fraction. Crystal precipitation changed the apparent activation energy and required a longer stabilization times for viscosity measurements. The viscosity results were used in predictive equations based on Veytsman and Einstein's models, with critical nucleation temperatures and the solid fraction calculated with FactSage. In the simulated eastern/western coal feedstock blends based on ash compositions, the fractions of the solid precipitates were also calculated using the thermodynamic program FactSage for each blend composition, and the plastic viscosity of each eastern/western coal slag blend was predicted using Veytsman's model and compared to available experimental data.
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Wu, Chengchuan, Guoguang Cheng, and Hu Long. "Effect of Ce2O3 and CaO/Al2O3 on the Phase, Melting Temperature and Viscosity of CaO-Al2O3-10 Mass% SiO2 Based Slags." High Temperature Materials and Processes 33, no. 1 (February 1, 2014): 77–84. http://dx.doi.org/10.1515/htmp-2013-0025.

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AbstractThe melting temperature and viscosity of CaO-Al2O3-10 mass% SiO2 based slag system with various concentrations of Ce2O3 have been studied using the melting point detector and the rotating crucible viscometer. And X-ray diffraction analysis has been used for phase identification. The results show that cerium is stable in Ce3+ state existing mainly as CeAlO3 and Ce4.67(SiO4)3O phase in slags and CeAlO3 phase appears in green color. The melting temperature gently decreases with Ce2O3 additions in 1.57 of CaO/Al2O3. Moreover, the melting temperature increases first and then decreases with the increasing of CaO/Al2O3 from 1.17 to 1.52 at 4.47 mass% Ce2O3. In addition, at 1.57 of CaO/Al2O3, the viscosity increases at the beginning and then decreases with the increasing Ce2O3 content from 4.39 to 11.48 mass%. Furthermore, at 4.47 mass% Ce2O3, the viscosity decreases at the first and then increases with the increasing CaO/Al2O3 from 1.17 to 1.52. Meanwhile, from the slopes of the Arrhenius relationship for viscosity, the activation energy range of viscous flow is from 179.07 to 433.70 kJ/mol. On the basis of these results, slag composition of 45.64 mass% CaO-39.02 mass% Al2O3-10.73 mass% SiO2-3.83 mass% Ce2O3 is melting temperature of 1361 °C and viscosity of 0.398 Pa·s (1500 °C), which has superiority and is more suitable for the actual refining process.
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Rahman, Kazi S., Khandker S. Hossain, A. Takada, Y. Takahashi, and K. Nishinari. "Effect of Heat Treatment on Dilute Solution Properties of Sugar Beet Pectin." Dhaka University Journal of Science 61, no. 1 (May 27, 2013): 117–23. http://dx.doi.org/10.3329/dujs.v61i1.15107.

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Beet Pectin (SBP) polysaccharide. Aqueous solution properties of these samples have been studied using Ubbelohde capillary viscometer in the dilute regime. Intrinsic viscosity [?] was estimated for different SBP solution samples prepared from heat-treated SBP powdered samples with different heating time. Results suggest that heat treatment has a significant effect on solution behavior of SBP samples. Intrinsic viscosities decreased with increasing heating time indicating that heat-treated SBP molecules are compact than the untreated one and the compactness increases with increasing heating time at 80°C. The intrinsic viscosities of these samples were plotted as a function of the corresponding molecular weight of the samples and can be expressed by a power law. The power law exponent was estimated as 1.4 indicating that pectin molecules takes the conformation of stiff polymer chains in dilute solution. Dhaka Univ. J. Sci. 61(1): 117-123, 2013 (January) DOI: http://dx.doi.org/10.3329/dujs.v61i1.15107
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Buni, M. S., W. A. Solyman, and S. A. Ali. "Viscometric Study of PC / PEG blends in THF solvent and Gamma-Rays Effect on the Viscosity of PC." Tikrit Journal of Pure Science 24, no. 3 (May 9, 2019): 105. http://dx.doi.org/10.25130/j.v24i3.825.

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In this research the intermolecular interaction between polycarbonate (PC) and polyethyleneglycol (PEG) in tetrahydrofuran (THF) solvent was studied, at 25˚C using a dilute solution viscometry method (DSV). The reduced viscosity and intrinsic viscosity and viscosity interaction parameter (b) were experimentally measured, we also discuss the compatility of a polymer mixture in terms of , and the effect of gamma-rays on the reduced viscosity and intrinsic viscosity and Huggins constant of (PC). The results show that the relation between and C is liner within C=(0.9-2)g/dl, and viscometric constant KH decreases with irradiation time while increases with Tirr. http://dx.doi.org/10.25130/tjps.24.2019.055
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Sudarlin, Sudarlin, and Winarto Haryadi. "Polimerisasi Eugenol Minyak Daun Cengkeh Hasil Redistilasi, Ekstraksi, dan Fraksinasi Menggunakan Katalis Asam Sulfat Pekat." Jurnal Kimia VALENSI 3, no. 1 (May 31, 2017): 50–58. http://dx.doi.org/10.15408/jkv.v3i1.4685.

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Polymerization of purified eugenol from clove leaf oil using concentrated sulfuric acid as catalyst has been done in this research. Clove leaf oil was purified by vacuum redistillation, acid-base extraction, and vacuum fractionation to yield eugenol. The eugenol was polymerized with concentrated sulfuric acid in ratio 1: 2. Polyeugenol from eugenol of clove leaf oil resulted from redistillation, extraction, and fractionation is in solid form (yield: 88.14%); from redistillation and extraction is also in solid form (yield: 86.15%); from redistillation clove leaf oil is in gel form (yield: 100.29%). Structure of polyeugenol was determined by infrared spectrophotometer and characterized by thin layer chromatography (TLC). Molecular weight of the product was calculated by viscometry method.DOI: http://dx.doi.org/10.15408/jkv.v0i0.4685
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Wolak, Artur, Grzegorz Zając, Kamil Fijorek, Piotr Janocha, and Arkadiusz Matwijczuk. "Experimental Investigation of the Viscosity Parameters Ranges—Case Study of Engine Oils in the Selected Viscosity Grade." Energies 13, no. 12 (June 17, 2020): 3152. http://dx.doi.org/10.3390/en13123152.

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The primary objective of the research was to compare the viscosity parameters of the same viscosity grade engine oils, as declared by the manufacturers, to the actual laboratory measurements. The secondary objective was to briefly investigate (1) what kind of information oil manufacturers provide in the product data sheets of the studied oils, and (2) the potential savings resulting from the use of the energy efficient oils. The study material consisted of 42 selected synthetic engine oils that belong to the 5W-30 viscosity grade. Stabinger SVM 3001 viscometer was used to determine kinematic viscosity at −20 °C, 40 °C, 100 °C and 130 °C. The HTHS (high temperature high shear), CCS (cold cranking simulator), FTIR (Fourier-transform infrared spectroscopy) and GC (Gas Chromatography) measurements were also performed for the samples that had the lowest and the highest kinematic viscosity. Large differences (5–25%) between oil producers’ declarations and the results of laboratory tests were found. Although all of the engine oils tested met the 5W-30 grade standards, the high variability of viscosity measurements needs to be reported. The difference between the oil with the highest and the oil with the lowest kinematic viscosity at −20 °C was 11,804 mm2/s. The outlying temperature-related viscosity profiles were recovered using Mahalanobis distances which identified 16 out of 42 analyzed oil samples as atypical.
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Ibrahim, AO, OR Momoh, and MT Isa. "ENHANCEMENT OF GAMBE CLAY USING UN-FERMENTABLE POLYMERS FOR DRILLING MUD FORMULATION." Nigerian Journal of Technology 36, no. 1 (December 29, 2016): 119–26. http://dx.doi.org/10.4314/njt.v36i1.15.

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There is availability and large deposits of bentonite (700 million tons in North Eastern part) in Nigeria but the clays had not been abundantly harnessed and enhanced with polymer for drilling fluid formulation because they are mostly composed of calcium montmorillonite. This work was aimed at enhancing Gambe clay using un-fermentable polymers (three carboxy methyl cellulose (CMC) with different average molecular weight). The clay was obtained from Gambe town in Adamawa State, Nigeria, beneficiated for quartz removal, as well as enhancement with Na2CO3 (6 wt.%). The mineral and oxides composition of the clay was determined using X-ray diffraction and X-ray fluorescence analyses respectively, and finally used to formulate the drilling fluid. The effect of the polymer on the rheological and physico-chemical properties of the formulated drilling fluid was investigated employing FANN 35SA viscometer. It was found that the carboxy methyl cellulose enhanced the plastic viscosity from 1.5 cP to 34 cP and the apparent viscosity from 2.25 cP to 44 cP. The higher the average molecular weight of the sodium carboxy methyl cellulose the higher the apparent and plastic viscosities of the formulated fluid. Similarly, the resultant viscosities compared well with that of commercial standard of 15 cP and 14 cP of apparent and plastic viscosities respectively. The sets of data generated from this work is going to be very useful for water and oil/gas drilling operations. http://dx.doi.org/10.4314/njt.v36i1.15
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Ayat, Moulkheir, Mohamed Belbachir, and Abdelkader Rahmouni. "Selective Synthesis, Characterization and Kinetics Studies of poly(α-Methyl styrene) induced by Maghnite-Na+ Clay (Algerian MMT)." Bulletin of Chemical Reaction Engineering & Catalysis 11, no. 3 (October 11, 2016): 376. http://dx.doi.org/10.9767/bcrec.11.3.578.376-388.

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A new and efficient catalyst of Na-Montmorillonite (Na+-MMT) was employed in this paper for α-methylstyrene (AMS) cationic polymerization. Maghnite clay, obtained from Tlemcen Algeria, was investigated to remove heavy metal ion from wastewater. “Maghnite-Na” is a Montmorillonite sheet silicate clay, exchanged with sodium as an efficient catalyst for cationic polymerization of many vinylic and heterocyclic monomers. The various techniques, including 1H-NMR, 13C-NMR, IR, DSC and Ubbelohde viscometer, were used to elucidate structural characteristics and thermal properties of the resulting polymers. The structure compositions of “MMT”, “H+-MMT” and “Na+-MMT” have been developed. It was found that the cationic polymerization of AMS is initiated by Na+-MMT at 0 °C in bulk and in solution. The influences of reaction temperature, solvent, weight ratio of initiator/monomer and reaction time on the yield of monomer and the molecular weight are investigated. The kinetics indicated that the polymerization rate is first order with respect to the monomer concentration. A possible mechanism of this cationic polymerization is discussed based on the results of the 1H-NMR Spectroscopic analysis of these model reactions. A cationic mechanism for the reaction was proposed. From the mechanism studies, it was showed that monomer was inserted into the growing chains. Copyright © 2016 BCREC GROUP. All rights reserved. <br /> <em>Received: 6th September 2016; Revised: 27th April 2016; Accepted: 7th June 2016</em> <br /> <strong>How to Cite:</strong> Ayat, M., Belbachir, M., Rahmouni, A. (2016). Selective Synthesis, Characterization and Kinetics Studies of poly(α-Methyl styrene) induced by Maghnite-Na+ Clay (Algerian MMT). <em>Bulletin of Chemical Reaction Engineering & Catalysis</em>, 11 (3): 376-388 (doi:10.9767/bcrec.11.3.578.376-388) <br /> <strong>Permalink/DOI:</strong> <a href="http://doi.org/10.9767/bcrec.11.3.578.376-388" />http://doi.org/10.9767/bcrec.11.3.578.376-388 </a>
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Dissertations / Theses on the topic "HTHP Viscometer"

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Ash, Dean Christopher. "The liquid droplet quartz crystal microbalance micro viscometer." Thesis, Lancaster University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.423557.

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Presented here is a novel use of the Quartz Crystal Microbalance QCM as a droplet micro-viscometer. The droplet micro-viscometer is so named as it requires only a micro litre of liquid in the form of a droplet in order to determine the liquid viscosity. The crystal operates using the inverse piezoelectric effect and the droplet is applied to one electrode of the freely oscillating crystal. Loading the crystal surface this way produces a frequency change .11 in the oscillating frequency of the crystal, as a function of the liquid viscosity. Monitoring of this frequency allows for determination of the liquid viscosity. Jointly sponsored by the EPSRC and British Nuclear Fuels plc, this research was proposed by BNFL as a way of maintaining tighter control on an important parameter of a solvent extraction nuclear fuel reprocessing process. Research in this area started with the assessment of the QCM to give meaningful results for viscosity from a single droplet of liquid, initially, alcohols whose physical parameters were well documented. Encouraging results prompted further experimentation with tri-n-butyl phosphate or TBP, diluted with odourless kerosene, OK. Wider potential was realised and motor oils and fuel oils were targeted as a potential use for this technology. Motor oil as viscosity is a first indicator of the oil condition/quality and fuel oils specifically in the identification of red diesel when diluted in white diesel.As this technology was intended for use as a sensor it was important, for financial reasons, that the sensor element in contact with the liquid could be cleaned thoroughly enough to allow re-use without degradation of the results produced. A cleaning regime is covered in this work showing that cleaning is feasible but has limits in the amount of times this can successfully be performed before a replacement QCM is required. Some simple experiments on samples of whisky were performed in pursuit of a use in the foodstuffs industry with the institute of food research. These show a possible method of identification but no further work was done on this as other research demanded the time. Results show that the QCM results clearly demonstrate the use of a liquid droplet on one face does produce meaningful results with relation to the viscosity of the liquid. Various diJutions ofTBP and OK are distinguishable from each other as are various dilutions of red diesel in white diesel and oils of varying viscosity. The droplet QCM micro viscometer has the advantage over most other methods of viscometry not in its accuracy of absolute viscosity measurement but in the very small amount of sample liquid needed for test. This is a very desirable factor in situations where repeat sampling of a fixed volume of liquid is required as the samples taken need not significantly reduce the sample volume.
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Ronaldson, Kelly Anne. "Mathematical modelling of MEMS viscometers and densitometers." Thesis, University of Southampton, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440421.

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Abid, Saeid. "Evaluation of a falling body-type viscometer at high pressure." Thesis, University of Strathclyde, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510719.

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Xu, Z. "Development of a process control rheometer." Thesis, University of Strathclyde, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382481.

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Lee-Yow, Niko. "Optically Clear Biomicroviscometer with Modular Geometry Using Disposable PDMS Chips." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37091.

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We have designed and fabricated a biomicroviscometer platform for measurement of microflows of biological fluids. The biomicroviscometer combines an optically clear biocompatible polydimethylsiloxane (PDMS) channel with on-chip integrated microfluidic differential pressure sensors and capabilities of modular channel geometries. This setup allows for a direct measurement of the change in pressure and flow rate, increasing the overall accuracy of the measurement of viscosity and optical observation. We present an introduction of this combined method of measurement with different channel dimensions, using Newtonian and non Newtonian fluids, and the corresponding calculations. This measurement technique has potential applications in measuring rheological properties at the micro level to further blood disease analysis, and lab-on-a-chip fabrication and analysis.
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Chan, Paul Wing Hung. "In-situ viscosity measurement." Thesis, University of Bristol, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.341507.

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SANTOS, WALTER M. "Aplicacao da viscosimetria na deteccao de especiarias irradiadas." reponame:Repositório Institucional do IPEN, 1994. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10358.

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Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Alanazi, Hamdan Noman. "Characterization of Elastin-Like Polypeptides Using Viscometry." Cleveland State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1311026986.

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Persson, Sylvi. "Erythrocyte deformability studies by viscometry and filtrometry." Lund : Dept. of Medicine, University Hospital of Lund, Lund University, 1994. http://catalog.hathitrust.org/api/volumes/oclc/39207611.html.

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Slatter, Paul Thomas. "The rheological characterisation of non- Newtonian slurries using a novel balanced beam tube viscometer." Master's thesis, University of Cape Town, 1986. http://hdl.handle.net/11427/19914.

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The novel Balanced Beam Tube Viscometer (BBTV), developed at the University of Cape Town, has been further developed and refined. Extensive work has been done in the following areas: (i) The effective length of the BBTV tubes. (ii) Interpretation of the data obtained using the BBTV in both the laminar and turbulent flow regimes. (iii) Comparison with the rotary type viscometer. Kaolin clay and uranium tailings slimes slurries of different particle size range and concentration have been successfully characterised by yield- pseudoplastic rheologies using the BBTV. The BBTV is in fact a miniature pipeline and it has been shown that it is capable of producing valid turbulent flow data and indicating the laminar/turbulent transition region in the two tube sizes .
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Conference papers on the topic "HTHP Viscometer"

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Bala, V., E. E. Klaus, J. L. Duda, and V. Palekar. "Extension of the Temperature and Shear Rate Range for Polymer Containing Lubricants Using the Cannon HTHS Capillary Viscometer." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/932695.

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