Academic literature on the topic 'Mud pumps'
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Journal articles on the topic "Mud pumps"
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Bejger, Artur, and Tomasz Piasecki. "The Use of Acoustic Emission Elastic Waves for Diagnosing High Pressure Mud Pumps Used on Drilling Rigs." Energies 13, no. 5 (March 3, 2020): 1138. http://dx.doi.org/10.3390/en13051138.
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Although mud pumps are vital components of a drilling rig, their failures are frequent. The identification of technical condition of these high-pressure piston pumps is difficult. There are no reliable criteria for the assessment of mud pump condition. In this paper, faults of the pump valve module are identified by means of acoustic emission (AE) signals. The characteristics of these signals are extracted by wavelet packet signal processing. This method has been verified by experiments conducted on a NOV (National Oilwell Varco) -made triplex 14-P-220 mud pump (mounted in the drillship). The results show that the wavelet packet signal processing method can effectively extract the frequency band energy eigenvalues of the signals. Besides, some operational problems associated with high pressure piston mud pumps are presented. A non-invasive method for diagnosing the technical condition of such pumps is being developed at the Maritime University of Szczecin.
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Pekin, S. S., A. V. Bulat, V. A. Slyshenkov, and V. V. Mekhov. "Drilling mud pumps with rack gear." Proceedings of Gubkin Russian State University of Oil and Gas, no. 3 (2019): 71–79. http://dx.doi.org/10.33285/2073-9028-2019-3(296)-71-79.
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Nikiforova, S. M., M. A. Filippov, and A. S. Zhilin. "Heat Treatment of Wear Resistant Steels for Mud Pumps." Materials Science Forum 870 (September 2016): 181–84. http://dx.doi.org/10.4028/www.scientific.net/msf.870.181.
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Influence of different type heat treatment including high temperature quenching on wear resistance has been investigated. The two investigated steels are widely used in production of mud pumps. It was shown that Kh12MFL had better wear resistance in comparison with 150KhNML. Martensitic-carbide structure of the steels formed by quenching from high temperatures (900 – 1000 °С) induced good hardness (61 – 64 HRC). Analysis of the residual austenite contents influence on wear resistance was also made. It was determined that residual austenite formed after high temperature quenching (900 – 1000 °С) was metastable and had tendency to transform into carbon containing martensite of deformation. This allowed steels to have maximum wear resistance because of providing high abilities to friction hardening of the work place of the sample.
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Kozhevnikov, N. N., and L. N. Neitman. "Development and introduction of sealing rings in mud pumps." Hydrotechnical Construction 20, no. 9 (September 1986): 533–36. http://dx.doi.org/10.1007/bf01434188.
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Zhang, Xi Xi, Yu Jing Jia, and Guang Zhen Cheng. "The Water Sump Cleaning Machine by Vacuum Suction." Applied Mechanics and Materials 201-202 (October 2012): 785–88. http://dx.doi.org/10.4028/www.scientific.net/amm.201-202.785.
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This article describes a vacuum water sump cleaning machine which is used to clean up coal mine water sump. Cleaning machine is composed of mechanical structure and electrical control devices. The parts of machine are made up of Walk the flatbed, storage mud tank, vacuum pumps, suction pipe, mud tubes, swing devices, control valves, suction pipe and pressure tracheal. When working, under the function of vacuum pumping, cleaning machine pulls out the vacuum from storage mud tank through the vacuum air feeder. As the vacuum level in the tank is increasing, under the function of atmospheric pressure outside world, the mud flows into the reservoir along the suction tube. When storage mud tank is full, vacuum pump automatically shut down. Turning off the vacuum valve and opening the pressure valve, the slime in the tank under the function of compressed air comes into the mine car through the row mud tube. The layout of this cleaning machine is reasonable, what is more, it is flexible and convenient to operate, so that it reduces the labor intensity significantly and improves the work efficiency of the clearance.
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Shangareev, R. R. "Assessment of professional risks in the operation of mud pumps." IOP Conference Series: Materials Science and Engineering 905 (August 26, 2020): 012087. http://dx.doi.org/10.1088/1757-899x/905/1/012087.
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Concli, F., and C. Gorla. "non-newtonian cfd modelling of a valve for mud pumps." International Journal of Computational Methods and Experimental Measurements 8, no. 1 (January 1, 2020): 61–69. http://dx.doi.org/10.2495/cmem-v8-n1-61-69.
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Ogorodnikov, S. P., I. I. Mikheev, and A. E. Kulakov. "Optimization of the mud intakes of dredges with submersible pumps." Hydrotechnical Construction 21, no. 7 (July 1987): 432–36. http://dx.doi.org/10.1007/bf01427276.
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Mohamed Iyad Al, Naboulsi, Niculae Napoleon Antonescu, Alin Dinita, and Marius Morosanu. "Tribological Characterization of Some Elastomers Used at Progressive Cavity and Piston Pumps." MATEC Web of Conferences 318 (2020): 01016. http://dx.doi.org/10.1051/matecconf/202031801016.
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The progressive cavity pump (PCP) is a positive displacement pump, consisting of a polished helical-shaped rod (rotor) turning inside a helical elastomer (stator). PCP has many advantages, but the pump durability is manly limited by elastomer behavior. At piston pumps (PP) used for drilling mud piston has an elastomer sleeve that also limit the durability. Standards like ISO 15136.1 & 2 for pumps developed by manufactures and users’ committees provides requirements for design, quality design verification etc., but do not define specifically the elastomer for the stator or the metal used for the rotor. Each PCP and PP manufacturer used specific materials at pump construction. The aim of this study was to evaluate the tribological behavior of some elastomers such polybutadiene rubber (BR), polybutadiene acrylonitrile rubber (NBR), polybutadiene acrylonitrile carboxylate (XNBR) and polyamide (PA 6) in couples with hard chromium coated steel, nitride steel and cast iron. Were determined friction coefficients and wear on 2 types of friction couples (plane to plane and shoe to plane) on two tribometers and some mechanical proprieties (Young’s modulus, ultimate tensile strength, elongation, hardness).
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Mok, S. H., and D. G. Gorman. "Using Taguchi Experimental Design to Investigate Operating Variables That Significantly Affect Wear in Mud Pumps." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 209, no. 1 (March 1995): 29–40. http://dx.doi.org/10.1243/pime_proc_1995_209_403_02.
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Maintenance of offshore drilling mud pumps is normally based on running hours. It is generally accepted, however, that time does not provide an accurate means of scheduling maintenance, given the varying operating conditions of the reciprocating mud pumps. The energy expended at the interaction of sliding surfaces is hypothesized to be a better alternative. The effects of operating variables on wear rates are investigated. A Taguchi experimental design was used to identify those factors that significantly affect wear. Within the confines of an experimental test rig, the normal load and abrasive sand content was found to have a significant effect on the specific wear rate of nitrile rubber sliding on steel in drilling fluid.
Dissertations / Theses on the topic "Mud pumps"
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Mok, Soon H. "An investigation of energy-based planned maintenance of offshore drilling mud pumps." Thesis, Robert Gordon University, 1994. http://hdl.handle.net/10059/2136.
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Mud pumps used on offshore installations for drilling operations have been known to experience unpredictable breakdowns, including during critical stages of drilling. The fluid end has been identified as requiring more maintenance work due to component failure, compared to the power end. The most common maintenance strategies in use include breakdown maintenance, time-based maintenance and condition monitoring. Time-based maintenance, based on running hours, is the most commonly preferred method by most, if not all, mud pump operators. However, the nature of drilling operations require pump performance with variable loads (pressures), variable speed characteristics and time-based maintenance would not be able to account for the different operating conditions within any identical time frames. To address this shortcoming, this research looked at the postulation that material wear loss is related to the energy expended and developed a dedicated reciprocating wear test system to identify and investigate the effect of operating variables on the wear loss of piston rubbers, which was considered to be the most problematic of the fluid end components.
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Volec, Martin. "Malá vrtná souprava pro vrtání studní." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232188.
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The aim of this thesis is the structural design small drilling rigs for drilling wells. Drilling rig will be used for drilling wells up to 200 mm diameter rotary drilling technology with irrigation water. The first part is a literature search of small drilling rigs. In the second part, then custom design a small drilling rig.
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Hedlund, Sandra. "Utredning av värmepump med fjärrvärmespets." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-13304.
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Det här är ett examensarbete som handlar om en fastighet som står på Norra Kungsgatan 37-43 som har både en värmepump och fjärrvärme för uppvärmning. Värmepumpen används i första hand och fjärrvärmen används som spets när värmepumpen inte räcker till. Detta är en ganska ovanlig kombination. Syftet med arbetet är att ta reda på om detta är en bra lösning och om lösningen är lönsam. För att få fram hur stort fastighetens energibehov är så görs beräkningar utifrån fjärrvärmedata från tidigare år samt en gammal värmepump som är utbytt sedan 2011. Byggnadens energibehov uppskattas vara ungefär 895 MWh/år och värmepumpen beräknas täcka 54 % av värmebehovet. Utifrån detta jämförs sedan kostnaden för uppvärmning av fastigheten med endast fjärrvärme med kostnaden för uppvärmning med både värmepumpen och fjärrvärme. Genom att använda värmepumpen så sparas drygt 140 000 kr per år. Det innebär att värmepumpen är lönsam rent ekonomiskt. Däremot kan användningen av högkvalitativ energi för uppvärmning diskuteras. Värme som är energi med lägre kvalitet borde i första hand användas för uppvärmning. Det för att inte slösa på våra dyrbara energiresurser och på så sätt få en hållbar utveckling.This is an essay about a property at Norra Kungsgatan 37-43 who is heated with both a heat pump and district heating. The heat pump is used primarily and district heating is used as a tip when the heat from the heat pump is not enough. This is a pretty rare combination. The purpose of this essay is to find out if this is a good solution and if the solution is economically viable. To determine the heat demand of the property, calculations based on district heating data and heat pump data from previously years has been used. The heat demand of the building is estimated to be approximately 895 MWh/year and the heat pump is estimated to cover 54% of the heat demand. Based on this, the cost for heating the building with district heating is compared with the cost of heating the building with the heat pump and district heating. By using the heat pump, more than 140 000 kronor per year can be saved. This means that the heat pump is economically viable. However, the use of high-quality energy for heating is discussed. Heat is energy with lower quality and should be used primarily for heating. We can not waste our precious energy resources if we want to achieve sustainable development.
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Edström, Johan, and Samuel Hammar. "Framtagning av beräkningsmodell för uppvärmningssystem : med fokus på kombinationen fjärrvärme och frånluftsvärmepumpar." Thesis, Högskolan Väst, Avdelningen för maskinteknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-9834.
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Till följd av EU:s miljömål 2020 har svenska statliga och kommunala miljömål satts upp för att minska energianvändningen. EU:s 2020-mål syftar till att minska energianvändningen i Europa med 20 procent fram till år 2020 från det att målet sattes upp 2010. På kommunal nivå har detta inneburit att fastighetsbolag, privata men främst kommunala aktörer, har tvingats att se över sin energianvändning. Arbetet i denna rapport föranleds av en av de besparingsåtgärder som har vidtagits nämligen att komplettera befintliga fjärrvärmeuppvärmningssystem med värmepumpar. Uppdraget avser utveckling och utvärdering av en beräkningsmodell för denna typ av system. För att skapa ett pålitligt beslutsunderlag i arbetet med att minska energianvändningen krävs välgrundade beräkningar. Befintliga beräkningsmodeller lägger stor vikt vid ekonomiska faktorer och tar därmed liten hänsyn till tekniska aspekter och omgivande faktorer. Målet med arbetet har varit att skapa en beräkningsmodell vilken i större utsträckning speglar den faktiska situationen och påvisar ett mer välgrundat beslutsunderlag. Arbetet inleddes med en litteraturstudie vilken innefattade relevant forskning och grundläggande fakta om värmepumpar och fjärrvärmesystem. Beräkningsmodellen har utvecklats löpande under projektet där nya funktioner samt ny information ständigt tillkommit. Projektet har resulterat i en fungerande beräkningsmodell vilken innefattar fler parametrar än tidigare motsvarigheter. Tillsammans med uppdragsgivaren sattes tre olika mål upp för beräkningsmodellen, dessa var: Att på ett intuitivt sätt presentera information och data. Att skapa en transparent struktur vilken är enkel att följa. Att skapa ett flöde genom modellen vilket följer en önskad arbetsgång. Dessa mål anses ha blivit uppfyllda, dock finns möjlighet till vidareutveckling. Modellen skulle exempelvis kunna kompletteras med mer automatiserade optimeringsberäkningar och justeras för att hantera andra typer av systemlösningar.As a result of the EU's environmental 2020 goal, the Swedish government and municipal boards has put up internal goals to reduce energy consumption. EU 2020 goal aims to reduce energy consumption in Europe by 20 percent by the year 2020 from that the target was set in 2010. At the municipal level, this has meant that private but mainly public housing properties have been required to review their energy use. The work in this report is based on one of the savings measures that have been taken, which is to supplement existing district heating systems with exhaust air heat pumps. The project aims to develop a calculation model for evaluation and computation for this type of system. To create a reliable basis for decisions, efforts were made to produce just calculations. Existing computational models are focused on economic factors and thus takes little consideration of technological aspects and environmental factors. The aim of the work has been to create a computational model which more closely reflects the real situation and demonstrates a more informative decision basis. The work began with a literature review which included relevant research and basic facts about exhaust air heat pumps and district heating systems. The calculation model has been developed continuously during the project in which new functions and new information constantly has been added. The project has resulted in a working computational model which includes many more parameters than previous reviewed models. Together with the client three sub goals were set up for the model, these were: To intuitively present information and data. To create a transparent structure which is simple to follow. To create a flow through the model, which follows a desired work process. These goals are considered to have been fulfilled in the developed calculation model, however, it's possible to further develop this model. The model could, for example, be supplemented with more automated optimization calculations and be adjusted to handle other kinds of heating systems.
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Goldsteins, Linards. "Analyse expérimentale et numérique du comportement électromagnétique de pompe à induction linéaire annulaire." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAI047/document.
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La recherche actuelle dans le domaine des pompes à induction électromagnétique s’oriente sur la question de l'instabilité MagnétoHydroDynamique (MHD) avec un intérêt particulier pour les régimes à haut nombre de Reynolds magnétique de glissement ( ). Notre étude se focalise sur les pompes à induction linéaires annulaires (ALIP) fonctionnant avec du sodium liquide. La thèse s’inscrit dans le contexte du programme français de recherche et développement de réacteur rapide en sodium de la GEN IV. Pour le démonstrateur ASTRID, l'utilisation d’une ALIP à haut débit dans les boucles de refroidissement secondaires est identifiée. Le CEA, a conçu, réalisé et exploitera la boucle PEMDYN, représentative d’instabilités MHD à hauts débits.Dans cette étude, la stabilité d'une ALIP idéale est abordée du point de vue théorique en se focalisant sur l'analyse de la stabilité linéaire. L'analyse a révélé que la forte amplification de la perturbation est attendue lorsque le seuil de stabilité convective est atteint. La théorie est soutenue par les résultats numériques et des expériences rapportées dans la littérature. Le fonctionnement stable et les moyens de stabilisation jouant avec deux fréquences dans le cas d'une ALIP idéale est discuté et les conditions nécessaires obtenues.Des modèles numériques détaillés de pompe plate à induction linéaire (FLIP) en tenant compte des phénomènes d'une véritable pompe sont développés. Une nouvelle technique de mesures du champ magnétique est introduite et les résultats expérimentaux démontrent un accord qualitatif avec des modèles numériques permettant de capturer tous les phénomènes principaux tels que l'oscillation du champ magnétique et les profils de vitesse perturbée. Ces résultats précisent les phénomènes d'instabilité MHD qui peuvent être rencontrés et peuvent être utilisés en tant que référence dans des études ultérieuresThe research explores the issue of magnetohydrodynamic (MHD) instability in electromagnetic induction pumps with focus on the regimes of high slip Reynolds magnetic number ( ) in Annular Linear Induction Pumps (ALIP) operating with liquid sodium. The context of the thesis is French GEN IV Sodium Fast Reactor research and development program for ASTRID in a framework of which the use of high discharge ALIP in the secondary cooling loops is being studied. CEA has designed, realized and will exploit PEMDYN facility, able to represent MHD instability in high discharge ALIP.In the thesis stability of an ideal ALIP is elaborated theoretically using linear stability analysis. Analysis revealed that strong amplification of perturbation is expected after convective stability threshold is reached. Theory is supported with numerical results and experiments reported in literature. Stable operation and stabilization technique operating with two frequencies in case of an ideal ALIP is discussed and necessary conditions derived.Detailed numerical models of flat linear induction pump (FLIP) taking into account effects of a real pump are developed. New technique of magnetic field measurements has been introduced and experimental results demonstrate a qualitative agreement with numerical models capturing all principal phenomena such as oscillation of magnetic field and perturbed velocity profiles. These results give significantly more profound insight in the phenomenon of MHD instability and can be used as a reference in further studies
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Gustafsson, Olle, and Johan Karlsson. "Resurseffektiv energieffektivisering av flerbostadshus : Frånluftsvärmepumpar i kombination med fjärrvärme." Thesis, Linköpings universitet, Energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119214.
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Fjärrvärme täcker i dagsläget cirka 56 procent av energibehovet för uppvärmning och varmvatten i svenska bostadssektorn. Denna siffra förväntas minska i och med ökade energieffektiviseringsåtgärder och installationer av alternativa värmekällor. Det har blivit allt vanligare att både fastighetssektorn och olika miljöklassningssystem fokuserar på att minska mängden inköpt energi och ett sätt att göra detta på är att installera frånluftsvärmepumpar som ett komplement till fastighetens primära uppvärmningssystem. Det kommunalägda bostadsbolaget AB Stångåstaden planerar att utföra detta i flerbostadshus där FTX-system av flera anledningar inte är möjligt att installera. Installationen är aktuell i fastigheter som i dagsläget har frånluftsventilation och självdrag samt är högre än tre våningar.Installationen kommer att påverka den lokala fjärrvärmeleverantören Tekniska verken AB och då även de är kommunalägda finns det ett intresse i att utreda de effekter som frånluftsvärmepumparna kommer att ha på de båda företagen samt på kommunen i stort. Därför ämnar denna rapport till att påvisa effekterna av installationen av frånluftsvärmepumpar som komplement till fjärrvärme ur ett ekonomiskt, miljö- och resursmässigt perspektiv. I den här rapporten syftar resurs till den primärenergianvändning som sker till följd av förändrad fjärrvärme- och elanvändning vid installation av frånluftsvärmepumpar.Detta har gjorts genom att undersöka två befintliga fastigheter där frånluftsvärmepumpar nyligen installerats och modellera dem i programmet BV2. Där undersöks hur värmeanvändningen förändras då frånluftsvärmepumpen tillåts att drivas utifrån följande sex driftfall; 1. Frånluftsvärmepumpen går året runt 2. Frånluftsvärmepumpen går mellan december och februari 3. Frånluftsvärmepumpen går mellan oktober och april 4. Frånluftsvärmepumpen startar då utetemperaturen understiger -4˚C 5. Frånluftsvärmepumpen startar då utetemperaturen understiger +1˚C 6. Frånluftsvärmepumpen startar då utetemperaturen understiger +5˚C Dessa är framtagna med avseende på Tekniska verkens säsongsbaserade fjärrvärmepris samt på ungefärliga utetemperaturer då marginalproduktionen för fjärrvärmen skiftar bränsle. Dessa kommer även att jämföras med ett referensfall då enbart fjärrvärme täcker fastigheternas värmebehov.Förändringen i fastigheternas fjärrvärmebehov simulerades sedan i Tekniska verkens energiplaneringssystem för att se hur värme- och elproduktionen påverkades. Genom detta erhölls underlag för att kunna ta fram de ekonomiska, miljö- och primärenergimässiga effekterna som uppkommer i och med frånluftsvärmepumpens drift.Utifrån detta kan det konstateras att frånluftsvärmepumpar inte är en lönsam energieffektiviseringsåtgärd för Tekniska verken, Stångåstaden eller Linköpings kommun. Prisbilden och bränslesammansättningen för fjärrvärme i Linköping ger inte frånluftsvärmepumparna potential till att vara lönsam utifrån något av de tre kriterierna ekonomi, miljö och resurs. De mest fördelaktiga driftfallen fås för alla parter då frånluftsvärmepumpen får starta mellan en och minus fyra grader. Detta ger som bäst kommunen en ekonomisk förlust på cirka 1,6 Mkr för Fastighet A och 2,8 Mkr för Fastighet B över en tidsperiod på tjugo år, vilket bedöms vara värmepumpens ekonomiska livslängd. Förlusten beror till störst del på de höga investeringskostnaderna som frånluftsvärmepumparna medför, men också på den prisbild som är satt för fjärrvärme i Linköping.Genom att temperaturstyra frånluftsvärmepumpen ges också störst potential till att minska utsläppsintensiv marginalproduktion av fjärrvärme och genom det också ge minskade globala växthusgasutsläpp i jämförelse med att enbart använda fjärrvärme. Merparten av driftfallen ger dock ökade utsläpp i jämförelse med referensen. Anledningen är till stor del den höga andel avfallsbränsle som finns i Tekniska verkens produktionsmix. Minskad fjärrvärmeproduktion minskar även Tekniska verkens elproduktion vilken antas täckas upp av en mer utsläppsintensiv europeisk marginalproduktion.iiDet finns inget av de valda driftfallen som minskar användningen av den primärenergi som krävs vid värmeproduktionen och anledningen är återigen att den ökade elanvändningen värderas med en högre faktor än vad avfallsbaserad fjärrvärme gör.Frånluftsvärmepumparna är på båda fastigheterna installerade på fastighetens radiatorretur och trots den bevisat förhöjda returtemperaturen som sker på fjärrvärmenätet så bedöms detta inkopplingsalternativ som det mest effektiva sätt att utföra installationen på för att erhålla bäst värmefaktor, driftkostnad och grundinvestering.Trots att inget av de analyserade driftfallen gav en entydig förbättring ur kriterierna ekonomi, miljö och resurs i jämförelse med referensfallet lyckades ändå mängden inköpt energi minskas i samtliga fall. Detta kan ses som en indikation på att de mål om minskad inköpt energi som sätts inom branschen kan behöva revideras, då exempelvis en av de primära anledningarna till dessa mål är att minska koldioxidutsläppen.
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Forsman, Gustav. "Säkra lyft för vertikala gruvpumpar : Med förbättringsförslag." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-43994.
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SAMMANFATTNING Syftet: Syftet med detta examensarbete var att ta reda på risker med Metso Sweden ABs lyft till de vertikala gruvpumparna och använda den informationen för att ta fram en lyftmetod som löser problemen med avseende på säkerhet, ergonomi och användarvänlighet för användare på Metso Sweden AB. För att lösa dessa problem ställdes dessa frågeställningar för att nå förbättringsmöjligheter: 1. Hur kan man göra ett lyft till dem vertikala gruvpumparna säkert? 2. Hur får man detta lyft att vara ergonomiskt för användaren? 3. Hur uppnår jag användarvänlighet? Metod: Olika metoder har tillämpats från den generiska produkutvecklingsprocessen för att lösa de befintliga problemformuleringarna. För att få fram primärdata gjordes observationer, intervjuer, workshop men också sekundärdata i form av en litteraturstudie. Resultat: Studien resulterade i att en gemensam lösning hittades inom avgränsningarna. Utvecklingar har implementerats från konceptfasen till den slutgiltiga produkten för att nå framgång. Beräkningar har genomförts för att visa produktens hållfasthetsklass, för att se om den klarar av belastningen samt den potentiella förskjutningen som kan uppstå vid olika laster. Produkten ges som ett förslag och rekommendation på förbättringar. Slutsats: Förslag på åtgärder har tagits fram för hur den framtagna problematiken kan lösas med hjälp av en ny faktabaserad lösning som krävs för att inte riskera personalens hälsa samt omgivningen. Rekommendationer: Metso Sweden AB rekommenderas att vidta åtgärder för att eliminera de risker som finns med deras lyft som sker inom avgränsningen. Här bör den nya lösningen baseras utifrån säkerhet, ergonomi och användarvänlighet för att nå framgång och att vidare utveckling lär ske för föreslagen lösning. Nyckelord: Användarvänlighet, Ergonomi, Gruvpumpar, Lyft, Lyftredskap, Produktutveckling, SäkerhetABSTRACT Purpose: The purpose of this thesis was to find out risks with the lift for the vertical mining pumps and use that information to make a better lift where it should include features that solve the problem regarding safe, ergonomic and user-friendly for users on Metso Sweden AB. To solve these problems, these issues were raised to achieve improvement opportunities: 1. How can you make a safe lift to those vertical mining pumps? 2. How do you get this lift to be ergonomic for the user? 3. How do I achieve user-friendliness? Method: Methods have been used and applied from the generic product development process to be problem-free. To obtain primary data, observations, interviews, workshops were done, but also secondary data in the form of a literature study. Result: The study resulted in a common solution being found within the boundaries. Developments have made from the concept phase to the final product to achieve success. Calculations have been made to show the product's strength class to see if it can withstand the pressure and the potential displacement that can occur at different loads. The product is given as a proposal and recommendation for improvements. Conclusion: Suggestions have been made for how the problem presented can be solved with the help of a new fact-based product that is not required to risk the health of the personnel and the environment. Recommendations: Metso Sweden AB is recommended to take actions to eliminate the risks associated with their lifting that takes place within the boundary. Here, the new solution should be based on safety, ergonomics and user-friendliness to achieve success and that further development will occur for the proposed solution. Keywords: Ergonomics, Lift, Lifting Tool, Mining pumps, Product development, Safety, User-friendliness
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Fredlund, Markus, and Markus Olsson. "Jämförande undersökning av värmeåtervinning ur frånluft i två flerbostadshus med frånluftvärmepumpar." Thesis, KTH, Byggteknik och design, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101670.
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Två olika värmesystem i två flerbostadshus har analyserats. Målet med analysen är att få en uppfattning om vilket värmesystem som är mest fördelaktigt i flerbostadshus. I analysen jämförs två olika värmesystem. I värmesystemen används två olika sorters frånluftsvärmepumpar för att återvinna värme ur frånluften. När värmepumparna inte klarar av att producera tillräckligt med värme för att täcka fastighetens värmebehov används fjärrvärme som spetsning. Värmepumparna är fastighetens huvudvärmekälla. I den ena fastigheten, Gäddan 1, används en luft-vatten frånluftvärmepump. Kylbatteriet som finns i frånluftsvärmepumpen är placerat i frånluftkammaren. Den andra fastigheten, Gäddan 2, använder sig av två utomhusvärmepumpar. Dessa två är placerade i en frånluftskammare för att kunna återvinna den varma luften. Under analysen har en sammanställning av egna mätningar och prognoser tagits fram ur en mätningsperiod på tre veckor. I analysen jämförs de olika värmesystemen utifrån tre olika faktorer; energi, miljö och ekonomi. De parametrar som beräknats är värmefaktor (COP), energiförbrukning (kWh), livscykelkostnad (LCC), återbetalningstid (år) och kostnad för producerad värmeenergi (kr/kWh). Resultaten utgår från statistiken och jämförs mellan varandra. Resultatet av analysen visar att värmesystemet i fastigheten Gäddan 1 är mest fördelaktig enligt de metoder som har använts som berör både energi och ekonomi. Det resultat som visats är att Gäddan 1 har 20 % högre värmefaktor, 12 % lägre driftskostnad och 50 % snabbare återbetalningstid för värmesystemet. Dock har värmesystemet 36 % högre koldioxidsutsläpp under systemets levnadslängd, som är baserat på 20 år. I slutsatsen kan fastigheternas storlek påverka resultaten. Gäddan 1 är en större byggnad och har fler lägenheter jämfört med Gäddan 2. Detta påverkar förbrukningen av fjärrvärme i värmesystemen som ökar koldioxidsutsläppen, vilket kan vara en bidragande faktor till att Gäddan 1 har högre koldioxidsutsläpps resultat (36 %) än Gäddan 2.Two different heating systems in two apartment buildings have been analyzed. The goal of this analysis is to get an idea of which heating system is most beneficial in apartment buildings. The analysis compares two different heating systems. Two different kinds of exhaust air heat pumps are used to recover heat from exhaust air. When heat pumps are unable to produce enough heat to cover the heating demand of the buildings, district heating is used. The heat pumps are the property's main source of heat. In one property, Gäddan 1, an air-water heat pump is used. The cooling coil located in the exhaust air heat pump is placed in the exhaust chamber. The other property, Gäddan 2, features two outdoor heat pumps. These two pumps are disposed in an exhaust chamber in order to recover the hot air. During analysis, a compilation of measurements and predictions from a measurement period of three weeks has been analyzed in order to calculate the various parameters. The analysis compares the different heating systems based on three different factors including energy, environment and economy. The parameters that are calculated are the coefficient of performance (COP), energy consumption (kWh), life cycle cost (LCC), payback period (years) and cost of the produced thermal energy (SEK / kWh). The results are based on statistics and compared between each other. The result of the analysis shows that the heating system in the property Gäddan 1 is the most beneficial, according to the methods used concerning both energy and economy. The result shows that Gäddan 1 has a 20 % higher coefficient of performance, 12 % lower operating cost and 50 % faster payback time for the heating system. However, this heating system has 36 % higher carbon dioxide emissions during its life span, which is based on 20 years. In conclusion the properties size may also affect the results. Gäddan 1 is a larger building and has more flats than Gäddan 2. This affects the consumption of district heating in the heating systems with increase carbon emissions. This may be a contributing factor to a higher carbon dioxide emission in Gäddan 1 (36 %) compare to Gäddan 2.
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Nordenström, Erik. "Värmesystem i flerbostadshus: Kombinera fjärrvärme med frånluftsvärmepump : För ekonomisk och hållbar utveckling." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-48228.
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Den nuvarande EU-strategin för hållbar utveckling har som övergripande syfte att fastställa och utveckla åtgärder så att livskvaliteten ständigt kan förbättras, både för nuvarande och kommande generationer. En del i strategin är klimatmål som i första skedet sträcker sig till år 2020, dess medlemsstater ska då bland annat ha reducerat både sin energianvändning och sina utsläpp av växthusgaser med 20 %. I Sverige står bostad- och servicesektorn för 40 % av landets energianvändning, de har själva satt målet till 25 % besparing. Nya strategier och höjd energieffektivitet ska leda till att målet nås. Ett viktigt utvecklingsområde är uppvärmning av byggnader som står för 60 % av sektorns energianvändning. En stor del av bostadsbeståndet anses ha en energisparpotential på 20-50 %. Vid sidan av förbättringsåtgärder på bostäders klimatskal är val av värmesystem av stor vikt. Bland flerbostadshus står fjärrvärme för över 90 % av levererad värmeenergi. Genom att komplettera fjärrvärme med frånluftsvärmepump kan byggnadens energieffektivitet höjas och fastighetsägare kan göra en ekonomisk vinst i minskad mängd köpt energi. Fjärrvärmeleverantörer har svarat mot denna utveckling genom att förändra sina abonnemang så att värmesystemet blir överdimensionerat en stor del av året, därigenom blir värmepumpen överflödig. I denna fallstudie undersöks ett flerbostadshus i orten Grums, där frånluftsvärmepump redan installerats innan fjärrvärmeabonnemanget förändrades. Det nya abonnemanget innebär att fastighetsägare måste välja vilken maximal baseffekt de kan få levererad under året. En utredning är nödvändig för att säkerställa vilket val som ger en stabil och låg kostnad vid olika temperaturvariationer. Ur fastighetsägares perspektiv är problemet av ekonomisk karaktär, men denna studie undersöker även kombinationen fjärrvärme med värmepump med hänsyn till energianvändning och hållbarhetsmässig aspekt. Drivs värmesystemet på bästa sätt idag eller går det att hitta alternativa driftsätt som fungerar bättre? Målsättningen är primärt att reducera bränsleanvändning med 25 %, sekundärt minska koldioxidalstring och samtidigt sänka livscykelkostnaden för värmepumpen samt att i tredje hand reducera mängd köpt energi. Målen ska nås vid årsmedeltemperatur 5-7 ºC. För närvarande används frånluftsvärmepump som basvärme till radiatorkrets och varmvatten medan fjärrvärme täcker underskott av husets värmebehov. Nuvarande driftsätt jämförs med två alternativ. Alternativ 1 innebär byte till värmepump med mer effekt samt att fjärrvärme värmer tappvarmvatten, i övrigt körs värmesystem på samma sätt som förut. I Alternativ 2 ändras driftsätt så att fjärrvärmes baseffekt utnyttjas maximalt och värmepump körs då vald baseffekt inte täcker värmebehov. Frånsett att värmepump byts i ena fallet är inga ominstallationer nödvändiga. I studien används Microsoft Excel och varaktighetsdiagram för att utföra beräkningar. Resultaten visar att ingen av alternativen når fullständig måluppfyllelse, dock når alternativ 1 högre måluppfyllelse i och med att det primära målet (resursbesparing) i vart fall nås delvis. Studien visar att flerbostadshus, liknande referensobjektet, kan anpassa både drift av befintligt värmesystem och val av baseffekt (fjärrvärme) för att nå ekonomisk vinst. Ökad användning av fjärrvärme minskar indirekt koldioxidalstring men ökar resursanvändning. Byte av frånluftsvärmepump reducerar köpt energi vilket leder till minskad resursanvändning och bättre ekonomi, dock ökar elanvändning vilket ger marginellt tillskott av koldioxidalstring.The overall aim of the current EU strategy Sustainable Development is to identify and develop measures to ensure that quality of life can be constantly improved, both for present and future generations. A part of the strategy is the climate targets which in the first phase extend to 2020. Its Member States shall then have reduced both their energy use and greenhouse gas emissions by 20 %. In Sweden the residential and service sector stands for 40 % of the country's energy use, they have themselves set the target to 25 % savings. New policies and improved energy efficiency will lead to completion. An important area of development is the heating of buildings, which accounts for 60 % of the sector's energy use. A large part of the housing stock is considered to have an energy savings potential of 20-50 %. Next to the improvement of the building envelope, the selection of heating system is of great importance. More than 90 % of delivered heat energy to the apartment blocks in Sweden comes from district heating. By supplementing district heating with exhaust air heat pumps, the building's energy efficiency can be increased and building owners can make a financial gain in the reduced amount of purchased energy. District heating distributers have responded to this development by changing their subscriptions, making the heating system oversized much of the year, thereby the heat pump becomes more or less redundant. In this case study, the heating system of an apartment building in the town of Grums (Sweden) is of interest. The exhaust air heat pump was already installed before the district heating subscription was changed. The new district heating subscription implicates that property owners have to choose which maximum base effect they can get delivered all year round. An investigation is necessary to ensure that the selected option provides a stable and low cost at different temperature. From the property owner's perspective, the problem is of economic nature. This study however, concentrates on the combination of district heating with heat pumps seen from the energy use and sustainability aspect. Is the heating system working in the best way today, or it is possible to find alternative modes that work better? The target with this study is to find an operational mode that primarily will reduce fuel use by 25%, secondary will lower carbon dioxide generation and cut life-cycle cost of the heat pump and thirdly will reduce the amount of purchased energy. These targets must be achieved within the annual outside temperature of 5-7 ºC. Currently the exhaust air heat pump is used as basic heat, warming up radiators and domestic hot water while district heating covers the deficit of the house's heating demand. Current operating mode is compared with two alternatives. Option 1 involves a change of the heat pump, to one with more power, district heating will heat the domestic hot water and will continuously work as a backup for the heat pump. In Option 2, the operation mode is altered to optimize use of the district heating base effect, the heat pump runs only when the selected base effect does not cover the heating demand. Apart from that the heat pump is replaced in the first case, no reinstallation is required for these options. Study calculations are made by using Microsoft Excel and duration diagrams. The results shows that none of the options reach the targets completely, however, Option 1 is closer considering that the primary goal (saving resources) is reached in part. The study shows that heating systems in apartment buildings, similar to the reference object, can be adjusted as well as the choice of base effect (district heating) in order to successfully reduce environmental effects and/or achieve financial gain. Increased use of district heating indirectly reduces carbon dioxide generation but increases resource use. Replacement of exhaust air heat pump reduces purchased energy which leads to reduced use of resources and better economy, however, will increase electricity consumption, which gives a marginal addition contribution of carbon dioxide generation.
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Andersson, Hilda, Sofia Appelgren, Anna Boström, Siri Norlander, Emma Stam, and Miranda Stiernborg. "Snabba mikrofluidiska test möjliggör specialanpassad sjukvård : Utveckling av två designförslag med fokus på material, struktur och pump." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-295284.
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Två designförslag har utvecklats för ett snabbtest av antibiotikakänslighet baserat på ettmikrofluidiskt system av Gradientech AB. Antibiotikaresistens är ett stort och växande problem ivärlden. För att förbättra diagnostiken av bakteriella blodinfektioner krävs snabbarediagnostiska tester vilket möjliggör specialanpassad behandling. Linjära gradienter av antibiotikai det mikrofluidiska systemet möjliggör snabbare detektion av antibiotikakänslighet jämfört meddiagnostiska test som används idag. Projektet har syftat till att anpassa testet utvecklat avGradientech AB för en klinisk marknad. Fokus har varit på material, pumpsystem och strukturför snabbtestet. De två designförslagen baseras på krav på ett pålitligt och billigt test som äranvändarvänligt och som minimerar smittorisker. Det ena designförslaget använder sig av enchipbaserad peristaltisk pump och det andra förslaget är ett trelagersystem med endiafragmapump. De två förslagen består av både hårdplast och ett elastiskt material. När dettatest kommer ut på den kliniska marknaden så kommer det förbättra vården av patienter medbakteriella blodinfektioner och minska sjukvårdskostnader. Testet kommer även minskabehovet av behandling med bredspektrumantibiotika och därmed hjälpa till att stoppa spridningav antibiotikaresistens.Two designs were developed for a fast antibiotic susceptibility test (AST) based on a microfluidicsystem by Gradientech AB. Antibiotic resistance is a big and growing global problem. Fasterdiagnostic tests are needed to improve the diagnostics of bacterial infections and enablespecialized antibiotic therapy. Linear gradients of antibiotics in the microfluidic system in thisproject enables faster detection of antibiotic susceptibility compared to ASTs used today inhealth care. The aim of this project has been to adapt the test developed by Gradientech AB fora clinical market. The main focus has been on materials, pumping systems and structure of theAST. The two designs are based on requirements of a reliable and cheap test that is easy to useand minimizes the biohazard. The first design uses a chip-based peristaltic pump and the otherdesign is a three-layer structure with a diaphragm pump. The two designs consists of both arigid plastic material and an elastic material. When this test becomes available to the clinicalmarket it will improve the care of patients with bacterial blood infections and reduce healthcarecosts. It will also reduce the use of broad-spectrum treatment of antibiotics and help counteractincreased global antibiotic resistance.
Books on the topic "Mud pumps"
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Dyke, Kate Van. Drilling fluids, mud pumps, and conditioning equipment. Austin: University of Texas at Austin, Petroleum Extension Service, 1998.
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Multer, Roger H. A numerical mud discharge plume model for offshore drilling operations. New Orleans, La: Minerals Management Service, Gulf of Mexico OCS Regional Office, 1985.
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Buckaroos and mud pups: The early days of ranching in British Columbia. Surrey, BC: Heritage House Pub., 2006.
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Alve, Hägg. System för sortering och blandning av ved för att uppnå TMP-massa med bestämda egenskaper =: A system for sorting and mixing wood in order to obtain TMP pulps with definite properties. Uppsala: SLU, 1997.
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Parker, Philip M. The 2007-2012 World Outlook for Mud-Type Oil Well and Oil Field Pumps and Slush Pumps. ICON Group International, Inc., 2006.
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The 2006-2011 World Outlook for Mud-Type Oil Well and Oil Field Pumps and Slush Pumps. Icon Group International, Inc., 2005.
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The 2006-2011 World Outlook for Oil Well and Oil Field Pumps Excluding Subsurface Type, Mud Type, and Slush Pumps. Icon Group International, Inc., 2005.
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Parker, Philip M. The 2007-2012 World Outlook for Oil Well and Oil Field Pumps Excluding Subsurface Type, Mud Type, and Slush Pumps. ICON Group International, Inc., 2006.
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Unit I - The Rig and Its Maintenance: Mud Pumps and Conditioning Equipment Lesson 12 (Rotary Drilling Series). 2nd ed. Univ of Texas at Austin Petroleum, 1995.
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Applied Drilling Circulation Systems Hydraulics Calculations And Models. Gulf Professional Publishing, 2011.
Find full textBook chapters on the topic "Mud pumps"
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Pandian, R., and B. V. A. Rao. "Predictive maintenance programme for GEN sets and reciprocating MUD pumps of oil fields." In Condition Monitoring and Diagnostic Engineering Management, 197–202. Dordrecht: Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0431-6_30.
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Polischuk, V., R. Horn, V. Dubodelov, V. Pogorsky, V. Trefnyak, and M. Tsin. "Characteristic Properties of MHD Flow in Magnetodynamic Pumps." In Liquid Metal Magnetohydrodynamics, 255–61. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0999-1_31.
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Tong, Zhiwei, Hao Liu, and Fengxia Zhu. "Modal Analysis for Connecting Rod of Reciprocating Mud Pump." In Artificial Intelligence and Computational Intelligence, 215–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-05253-8_24.
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Karasev, B. G., I. R. Kirillov, and A. P. Ogorodnikov. "3500 m3/h MHD Pump for Fast Breeder Reactor." In Liquid Metal Magnetohydrodynamics, 333–38. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-0999-1_41.
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Guo, Boyun, and Gefei Liu. "Mud Pumps." In Applied Drilling Circulation Systems, 61–79. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-12-381957-4.00003-6.
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Hiivala, Nicholas, and Thomas Vassiliades. "The Medtronic Miniature Left Ventricular Assist Device (MVAD)™ System." In Mechanical Circulatory Support, 96–102. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190909291.003.0014.
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The Medtronic Miniature Left Ventricular Assist Device (MVAD)TM System is a continuous-flow, left ventricular assist device used to treat end-stage systolic heart failure. The pump is implanted either through a median sternotomy or a lateral thoracotomy and pumps blood from the left ventricle to the arterial system. The pump is controlled by an external microprocessor connected transcutaneously through a thin, flexible driveline and is powered by lithium-ion batteries or AC/DC power. In 2015, a clinical trial of the system in Europe and Australia was stopped because of several incidents of pump thrombosis.
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Bohman, J. Kyle, and Gregory J. Schears. "Extracorporeal Membrane Oxygenation." In Mayo Clinic Critical and Neurocritical Care Board Review, edited by Eelco F. M. Wijdicks, James Y. Findlay, William D. Freeman, and Ayan Sen, 429–34. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190862923.003.0068.
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Extracorporeal membrane oxygenation (ECMO) is a general term describing an extracorporeal circuit with a pump and a gas exchange membrane that can be used for cardiac support or respiratory support (or both) depending on its configuration. The 2 basic configurations of ECMO are venoarterial (VA) and venovenous (VV). VA ECMO removes blood from the venous circulation and pumps it through the oxygenator and back into the patient’s arterial circulation. VV ECMO removes blood from the venous circulation and pumps it through the oxygenator and back into the patient’s venous circulation. Common indications for VA ECMO include postcardiotomy, malignant ventricular arrhythmias, cardiogenic shock, and extracorporeal cardiopulmonary resuscitation.
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Parameshwar, Jayan, and Steven Tsui. "Cardiac transplantation and mechanical circulatory support." In Oxford Textbook of Medicine, edited by Jeremy Dwight, 3428–35. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0351.
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Cardiac transplantation is the treatment of choice for selected patients with advanced heart failure: median survival approaches 12 years and recipients enjoy an excellent quality of life, but availability is severely limited by shortage of donor organs. The need for lifelong immunosuppression is associated with side effects, including an increased incidence of malignancy. Newer immunosuppressive agents reduce nephrotoxicity and delay the onset of cardiac allograft vasculopathy, but may produce other side effects. Ventricular assist devices are mechanical blood pumps that work in parallel or series with the native ventricles. First-generation volume-displacement pulsatile ventricular assist devices have been superseded by rotary blood pumps that generate continuous flow. Significant complications include bleeding, thromboembolism, device failure due to pump thrombosis, and infection.
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Farrar, David J. "The Abbott CentriMag™ Acute Circulatory Support System and the HeartMate Percutaneous Heart Pump™." In Mechanical Circulatory Support, 145–51. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780190909291.003.0020.
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Abbott currently offers two short-term circulatory support systems. The Abbott CentriMag™ Acute Circulatory Support System has a magnetically levitated impeller in a centrifugal blood pump that provides hemocompatible left and/or right ventricular support across a range of clinical conditions. Clinical experience with the CentriMag system is extensive, with more than 40,000 sold and more than 150 articles in the literature. The HeartMate Percutaneous Heart Pump (PHP) System is a catheter-based heart pump and console designed to provide short-term left ventricular support to rapidly stabilize hemodynamics or to maintain adequate cardiac output. The key feature of the pump is an integrated 14 Fr arterial sheath that is placed through the femoral artery. The distal portion of the catheter then expands to 24 F after it is inserted into the left ventricle across the aortic valve. This feature is made possible by a collapsible elastomeric impeller and cannula that the operator expands during use. The impeller pumps blood from the left ventricle through the collapsible, nitinol-reinforced polyurethane cannula into the ascending aorta.
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Samandouras, George. "Neurosurgical management of spasticity." In The Neurosurgeon's Handbook, 769–73. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780198570677.003.0632.
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Chapter 15.2 covers the neurosurgical management of spasticity, including basic concepts, common medications used in spasticity, intrathecal baclofen pumps, selective peripheral neurotomies (SPNs), and selective dorsal rhizotomy (SDR).
Conference papers on the topic "Mud pumps"
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Liang, J. T., S. D. Zhao, and Y. H. Hu. "Design and Analysis of a Novel Radial Mud Pump Directly Driven by Permanent Magnet Disc Synchronous Motor." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64965.
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Mud pump is an important component of drilling equipments, which transports flush fluid like mud or water into bore in order to cool drill and carry debris. In this paper, a novel radial mud pump directly driven by permanent magnet disc synchronous motor (PMDSM) is designed, the influence of different numbers of plunger cylinders on the pump’s flow pulsation is analyzed to determine the pump’s configuration and driving requirement, and the structure and performance parameters of the direct drive PMDSM are calculated by finite element analysis. Compared with conventional mud pumps, the novel pump is characteristic that the structure is simple, working stability and efficiency are greatly improved, also the life of the equipment is extended.
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Badicioiu, Marius, Mihaela Caltaru, Catalin Teodoriu, and Mihail Minescu. "Investigations on the Mud Pumps Valves Repair Using Hard Metal Depositing by Welding." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78541.
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Mud pumps are essential components of the drilling rig, since they support the drilling process, and are required to operate 24/7. Their ability to generate high pressure at relatively high flow rates led to a wide application of reciprocal pumps, from mud pumps to fracking pumps, within the oil and gas business. The elements of the mud pump, especially the mud pump valve, are exposed to erosion-corrosion processes during the pumping operations because of the solids and the corrosive components of the pumped fluid which leads to a drastically reduction of their durability. The downtime of such a pump may add high costs to the drilling or fracking operations, and any improvement of the components durability helps. The mud circulation system is of main interest during the drilling operation, with 7% of the personnel time being spent on mud pumps and 26% on monitoring from the total time spent in the mud area. The present paper shows the experimental results regarding the hard metal deposition of high erosion/abrasion resistance materials on the valve seat’s working surfaces, and the use of the welding process in order to increase their durability, and eventually, to establish the possibility of reconditioning the mud pump valve. The experiments were performed on used valves as part of their reconditioning process, but can also be performed on new elements, as means to increase the durability and erosion resistance. The results are very promising and show a good and strong hard metal deposition with very good mechanical properties. The paper describes the steps and the specific pre and post welding treatment in order to achieve the optimum hard-facing parameters.
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Kyllingstad, Age, and Pal Jacob Nessjoen. "Condition Based Maintenance: A New Early Leak Detection System for Mud Pumps." In SPE/IADC Drilling Conference and Exhibition. Society of Petroleum Engineers, 2011. http://dx.doi.org/10.2118/139888-ms.
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Benoît, Daireaux, Dvergsnes Erik, Cayeux Eric, Bergerud Ronny, and Kjøsnes Ivar. "Automatic Control of Mud Pumps, Draw-Works and Top-Drive on a Floater." In SPE/IADC International Drilling Conference and Exhibition. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/194123-ms.
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Pal, Nitai, Pradip Kumar Sadhu, Rupam Das, Nibedita Das, R. Swaroop, and V. Mukherjee. "TRIAC-DIAC based DC series motor speed controller for mud pumps of drill-rig equipment." In 2011 International Conference on Emerging Trends in Electrical and Computer Technology (ICETECT 2011). IEEE, 2011. http://dx.doi.org/10.1109/icetect.2011.5760121.
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CONCLI, FRANCO, and CARLO GORLA. "ANALYSIS OF AN AUTOMATIC VALVE GEOMETRY FOR CONCRETE AND DRILLING MUD PUMPS TO AVOID CAVITATION: NON-NEWTONIAN CFD MODELLING." In AFM18. Southampton UK: WIT Press, 2018. http://dx.doi.org/10.2495/afm180211.
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Strømø, Kjartan M., Arild Saasen, Helge Hodne, Jan Egil Pallin, and Gudmund Aaker. "Ditch Magnet Performance." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61026.
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Magnetic shielding of the Measurement While Drilling (MWD) directional tools and damages to mud pumps, down-hole tools and casing/drill-pipe and difficulties in understanding logging results are some of the main problems caused by steel and magnetic contaminated drilling fluids. In order to have these problems significantly reduced, all the magnetic contaminants should ideally be removed from the drilling fluid by the use of ditch magnets. Hence, the magnets and their ability to remove magnetic waste from the drilling fluid was evaluated by field evaluations. Data from a field test of a new ditch magnet system where all the drilling fluid is forced to flow into an area with a strong magnetic fields have been compared with data from an operation with a traditional ditch magnet system in order to see if there are any significant differences in the total amount of magnetic waste material collected from the two systems. It is shown how drilling length, inclination and casing size may affect the production of magnetic debris entering the drilling fluid, and hence, show the well construction dependence of the ditch magnet performance.
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Atchison, Bryan Wade, and Chad Wuest. "The Integration of Managed Pressure Drilling MPD and Automated Well Control Technology." In IADC/SPE Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206385-ms.
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Abstract Digitalisation and automation can account for massive efficiencies in wells operations. Managed Pressure Drilling (MPD) and Automated Well Control are examples of "smart" technologies that can mitigate risks and costs associated with drilling wells. The Automated Well Control system was developed to monitor the well, identify an influx, take control of the rig equipment and shut in the well. MPD provides annular pressure control, real-time information of the well parameters and conditions downhole and very accurate and immediate influx detection. However, if a high intensity influx is taken that exceeds the pre-planned operational limits of the MPD package, then secondary well control is required. Therefore, a combination of Automated Well Control and MPD has been developed to deliver both pressure control and well control in a safe, efficient and less error-prone manner. On an MPD operation, the Automated Well Control system shuts-in the well as soon as it is required to do so. With Automated Well Control in MPD mode, the MPD system decides when to shut in and the Automated Well Control technology will immediately space out, stop the mud pumps and top-drive, and shut in the well using the pre-selected blowout preventer. This interface between the two systems mitigates drilling hazards using automation. The sensitivity of MPD, combined with Automated Well Control technology enables fast identification, decision making and reaction to well control events. Consequently, this fully integrated solution improves safety and operational efficiency. The MPD and Automated Well Control systems were integrated into a test rig and several tests were efficiently performed. The tool enabled immediate action in the event of influxes, providing a valuable solution for the industry. This paper briefly describes MPD and Automated Well Control and summarises the interface between the two technologies, detailing how the integrated system works on a rig. Moreover, rig trialling results and further developments are presented.
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Tibbits, Patrick A. "FEM Simulation and Life Optimization of Tandem Roller Thrust Bearing." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84234.
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Tandem thrust roller bearings carry high axial loads in rotary equipment such as mud pumps or extruders. Deflection of the bearing plates redistributes loads over rollers, and affects bearing life. In this study, solid finite elements modeled a shaft, housing and two stages of bearing plates. A line of spring elements represented each row of rollers. The stiffness of the line of spring elements modeled the stiffness of each roller/raceway non-Hertzian line contact. Modification of the spring element stiffness compensated for the compliance of the nodes of solid elements that modeled the bearing plates. This construct avoided computationally expensive surface-to-surface contact calculations. Further computational savings accrued from modeling the bearing and shaft assembly as axisymmetric. Program output included deflection of the bearing plates and a listing of spring element forces, which characterized the distribution of load over the length of the rollers. Bearings with optimized geometry had decreased maximum contact stress, more uniform distribution of contact stress over the length of each roller, and longer estimated rolling contact fatigue life.
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Gruver, J. K., R. D. Flack, and K. Brun. "Laser Velocimeter Measurements in the Pump of an Automotive Torque Converter: Part I — Average Measurements." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-047.
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A torque converter was tested for two turbine/pump rotational speed ratios, 0.065, and 0.800, and a laser velocimeter was used to measure three components of velocity within the pump. Shaft encoders were used to record the instantaneous pump angular position, which was correlated with the velocities. Average flow velocity profiles were obtained for the pump inlet, mid-, and exit planes. Large separation regions were seen in the mid- and exit planes of the pump for a speed ratio of 0.800. Strong counter-clockwise secondary flows were observed in the mid-plane and strong clockwise secondary flows were seen in the exit plane of the pump for all conditions; vorticities were evaluated and are reported. Velocity data was also used to find the torque distribution. For both speed ratios the torque was approximately evenly distributed between the inlet and exit. Finally, slip factors were evaluated at the mid- and exit planes. At the mid-plane they were approximately the same as for conventional centrifugal pumps; however, at the exit plane the slip factors are larger than for centrifugal pumps.
Reports on the topic "Mud pumps"
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Beck, Aaron. RiverOceanPlastic: Land-ocean transfer of plastic debris in the North Atlantic, Cruise No. AL534/2, 05 March – 26 March 2020, Malaga (Spain) – Kiel (Germany). GEOMAR Helmholtz Centre for Ocean Research Kiel, 2020. http://dx.doi.org/10.3289/cr_al534-2.
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Cruise AL534/2 is part of a multi-disciplinary research initiative as part of the JPI Oceans project HOTMIC and sought to investigate the origin, transport and fate of plastic debris from estuaries to the oceanic garbage patches. The main focus of the cruise was on the horizontal transfer of plastic debris from major European rivers into shelf regions and on the processes that mediate this transport. Stations were originally chosen to target the outflows of major European rivers along the western Europe coast between Malaga (Spain) and Kiel (Germany), although some modifications were made in response to inclement weather. In total, 16 stations were sampled along the cruise track. The sampling scheme was similar for most stations, and included: 1) a CTD cast to collect water column salinity and temperature profiles, and discrete samples between surface and seafloor, 2) sediment sampling with Van Veen grab and mini-multi corer (mini-MUC), 3) suspended particle and plankton sampling using a towed Bongo net and vertical WP3 net, and 4) surface neusten sampling using a catamaran trawl. At a subset of stations with deep water, suspended particles were collected using in situ pumps deployed on a cable. During transit between stations, surface water samples were collected from the ship’s underway seawater supply, and during calm weather, floating litter was counted by visual survey teams. The samples and data collected on cruise AL534/2 will be used to determine the: (1) abundance of plastic debris in surface waters, as well as the composition of polymer types, originating in major European estuaries and transported through coastal waters, (2) abundance and composition of microplastics (MP) in the water column at different depths from the sea surface to the seafloor including the sediment, (3) abundance and composition of plastic debris in pelagic and benthic organisms (invertebrates), (4) abundance and identity of biofoulers (bacteria, protozoans and metazoans) on the surface of plastic debris from different water depths, (5) identification of chemical compounds (“additives”) in the plastic debris and in water samples.
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An operations manager for a well servicing company in Texas, died when a length of pipe mounted on top of a skid-mounted mud pump broke loose and struck him in the head. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, August 1999. http://dx.doi.org/10.26616/nioshsface99tx467.
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