Relevant bibliographies by topics / Mud hydraulics

Academic literature on the topic 'Mud hydraulics'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Mud hydraulics"

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Yan, Bing Bing, Wen Bo Ren, Bao Lin Yin, and Yang Li. "Hydraulic System Simulation of 3-UPS Parallel Mechanism Based on ADAMS/Hydraulics." Key Engineering Materials 579-580 (September 2013): 430–33. http://dx.doi.org/10.4028/www.scientific.net/kem.579-580.430.

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In order to guaranty the work stability of the move-in-mud robot and movement relationship of wriggle turning joint, to use the 3-UPS parallel mechanism as the steering joint. Make full use of the characteristics flexibility, heavy force loading and small workspace of the parallel mechanism. Supporting link of the parallel mechanism driven by hydraulic cylinders, so a completely hydraulic system is an important factor to ensure the stationary work of parallel mechanism, provide the required power to go forward and ensure the forward speed of the move-in-mud robot. Establish the virtual prototype model of mechanical-hydraulic coupling system by using of Pro/E and ADAMS/Hydraulics software, do the dynamic simulation analysis of hydraulic control system based on Hydraulics module, the simulation process can be made more visual and vivid by three-dimensional visualization. Obtain the platform speed and hydraulic cylinder pressure curve after simulation, compare simulation results with theoretical calculations, and verify that the design is reasonable. The results show that it lays the foundation for the further optimization and research of the move-in-mud robot.
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Ashena, Rahman, Abdol-Azim Hekmatinia, Ali Ghalambor, Bernt Aadnoy, Charissa Enget, and Vamegh Rasouli. "Improving drilling hydraulics estimations-a case study." Journal of Petroleum Exploration and Production Technology 11, no. 6 (June 2021): 2763–76. http://dx.doi.org/10.1007/s13202-021-01203-4.

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AbstractAccurate pressure drop estimation is important for drill string and bit nozzles design and optimized fluid circulations as well as identifying the drilling problems such as bit nozzle(s) washout or plugging. In this study, the Bingham Plastic model has been modified by applying a coefficient to its turbulent pressure loss calculations. This coefficient encompasses the effects of the drill pipe tool joints and other effects in estimation of pressure losses. The range of the coefficient was determined in field applications for different hole sizes and mud types. The results showed that applying a correction coefficient of 1.08–1.12 to turbulent pressure loss equations (depending on borehole size and mud type) improves the pressure loss estimation. By applying this coefficient, the estimated pressure losses are increased to compensate the under-estimation of the Bingham Plastic model. This is considered a significant contribution to accurate calculation of borehole hydraulics and in-time detection and identification of borehole problems and reduction of invisible lost time. The findings also showed that this enhanced effect is independent of the mud type. The use of this coefficient removes the necessity of using rather complex mud rheological models such as the Herschel–Bulkley model.
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Yanuar, Ridwan, Budiarso, and Raldi A. Koestoer. "Hydraulics conveyances of mud slurry by a spiral pipe." Journal of Mechanical Science and Technology 23, no. 7 (July 2009): 1835–39. http://dx.doi.org/10.1007/s12206-009-0611-1.

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Sunthankar, A. A., S. Miska, E. Kuru, and A. Kamp. "New Developments in Aerated Mud Hydraulics for Horizontal Well Drilling." SPE Journal 9, no. 01 (March 1, 2004): 5–12. http://dx.doi.org/10.2118/87675-pa.

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Sunthankar, A. A., E. Kuru, S. Miska, and A. Kamp. "New Developments in Aerated Mud Hydraulics for Drilling in Inclined Wells." SPE Drilling & Completion 18, no. 02 (June 1, 2003): 152–58. http://dx.doi.org/10.2118/83638-pa.

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Li, Xiaorong, Chadi S. El Mohtar, and K. E. Gray. "Modeling Progressive Wellbore Breakouts with Dynamic Wellbore Hydraulics." SPE Journal 25, no. 02 (February 7, 2020): 541–57. http://dx.doi.org/10.2118/199887-pa.

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Summary This paper presents a model that couples wellbore geomechanics and wellbore hydraulics for predicting breakouts of arbitrarily deviated boreholes during drilling. By incorporating the impact of dynamic drilling parameters, the model can explicitly simulate the progressive receding of wellbore surface during a breakout event and update the boundary conditions on the newly created surface simultaneously. Numerical examples were carried out to demonstrate the capabilities of the model and to investigate the impacts of several drilling operational parameters. The results show that frictional pressure caused by mud circulation can substantially alter breakout volume and shape.
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Guliyev, V. V. "Enhancement lubricity properties of water-based mud with nanoparticles." Azerbaijan Oil Industry, no. 10 (October 15, 2020): 70–74. http://dx.doi.org/10.37474/0365-8554/2020-10-70-74.

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Currently, a great number of drilling fluids with different additives are used all over the world. Such additives are applied to control the properties of the drilling mud. The main purpose for controlling is to achieve more effective and safe drilling process. This research work aims to develop Water-Based Mud (WBM) with a Coefficient of Friction (CoF) as low as Oil-Based Mud (OBM) and better rheological properties. As it is known, produced CoF by WBM is higher than OBM, which means high friction between wellbore or casing and drill string. It was the reason for studying the effect of nanosilica on drilling fluid properties such as lubricity, rheological parameters and filtrate loss volume of drilling mud. The procedures were carried out following API RP 13B and API 13I standards. Five concentrations of nanosilica were selected to be tested. According to the results obtained, it was defined that adding nanosilica into the mud decreases CoF of basic WBM by 26 % and justifies nanosilica as a good lubricating agent for drilling fluid. The decreasing trend in coefficient of friction and plastic viscosity for nanosilica was obtained until the concentration of 0.1 %. This reduction is due to the shear thinning or pseudoplastic fluid behavior. After 0.1 %, an increase at PV value trend indicates that it does not follow shear thinning behavior and after reaching a certain amount of dissolved solids in the mud, it acts like normal drilling fluid. The yield point of the mud containing nanoparticles was higher than the basic one. Moreover, a growth in the concentration leads to an increase in yield point value. The improvement of this fluid system cleaning capacity via hydraulics modification and wellhole stability by filter cake endurance increase by adding nanosilica is shown as well. The average well construction data of “Neft Dashlary” field was used for the simulation studies conducted for the investigation of hydraulics parameters of reviewed fluids for all series of experiments. The test results were accepted reliable in case of at least 3 times repeatability.
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Guo, Boyun, Kai Sun, Ali Ghalambor, and Chengcai Xu. "A Closed-Form Hydraulics Equation for Aerated-Mud Drilling in Inclined Wells." SPE Drilling & Completion 19, no. 02 (June 1, 2004): 72–81. http://dx.doi.org/10.2118/88840-pa.

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Assi, Amel H. "Selection of an Optimum Drilling Fluid Model to Enhance Mud Hydraulic System Using Neural Networks in Iraqi Oil Field." Journal of Petroleum Research and Studies 12, no. 4 (December 15, 2022): 50–67. http://dx.doi.org/10.52716/jprs.v12i4.585.

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In drilling processes, the rheological properties pointed to the nature of the run-off and the composition of the drilling mud. Drilling mud performance can be assessed for solving the problems of the hole cleaning, fluid management, and hydraulics controls. The rheology factors are typically termed through the following parameters: Yield Point (Yp) and Plastic Viscosity (μp). The relation of (YP/ μp) is used for measuring of levelling for flow. High YP/ μp percentages are responsible for well cuttings transportation through laminar flow. The adequate values of (YP/ μp) are between 0 to 1 for the rheological models which used in drilling. This is what appeared in most of the models that were used in this study. The pressure loss is a gathering of numerous issues for example rheology of mud), flow regime and the well geometry. An artificial neural network (ANN) that used in this effort is an accurate or computational model stimulated by using JMP software. The aim of this study is to find out the effect of rheological models on the hydraulic system and to use the artificial neural network to simulate the parameters that were used as emotional parameters and then find an equation containing the parameters μp, Yp and P Yp/ μp to calculate the pressure losses in a hydraulic system. Data for 7 intermediate casing wells with 12.25" hole size and 95/8" intermediate casing size are taken from the southern Iraq field used for the above purpose. Then compare the result with common equations used to calculate pressure losses in a hydraulic system. Also, we calculate the optimum flow by the maximum impact force method and then offset in Equation obtained by (Joint Marketing Program) JMP software. Finally, the equation that was found to calculate pressure losses instead of using common hydraulic equations with long calculations gave very close results with less calculation.
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Baris, Ozcan, Luis Ayala, and W. Watson Robert. "Numerical Modeling of Foam Drilling Hydraulics." Journal of Engineering Research [TJER] 4, no. 1 (December 1, 2007): 103. http://dx.doi.org/10.24200/tjer.vol4iss1pp103-119.

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The use of foam as a drilling fluid was developed to meet a special set of conditions under which other common drilling fluids had failed. Foam drilling is defined as the process of making boreholes by utilizing foam as the circulating fluid. When compared with conventional drilling, underbalanced or foam drilling has several advantages. These advantages include: avoidance of lost circulation problems, minimizing damage to pay zones, higher penetration rates and bit life. Foams are usually characterized by the quality, the ratio of the volume of gas, and the total foam volume. Obtaining dependable pressure profiles for aerated (gasified) fluids and foam is more difficult than for single phase fluids, since in the former ones the drilling mud contains a gas phase that is entrained within the fluid system. The primary goal of this study is to expand the knowledge-base of the hydrodynamic phenomena that occur in a foam drilling operation. In order to gain a better understanding of foam drilling operations, a hydrodynamic model is developed and run at different operating conditions. For this purpose, the flow of foam through the drilling system is modeled by invoking the basic principles of continuum mechanics and thermodynamics. The model was designed to allow gas and liquid flow at desired volumetric flow rates through the drillstring and annulus. Parametric studies are conducted in order to identify the most influential variables in the hydrodynamic modeling of foam flow.
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Dissertations / Theses on the topic "Mud hydraulics"

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Olofsson, Petter, and Jimmy Utterström. "Hydraulstyrning med konfiguration över Bluetooth." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-122408.

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Denna rapport omfattar konstruktionen av ett fristående drivkort med tillhörande mobilapplikation för styrning och konfiguration av ett hydraulsystem. Projektets syfte var att på beställaren Bosch Rexroth ABs begäran undersöka om pump control module (PCM) - en del ur det existerande Spider 3 styrsystemet - kunde användas som en fristående modul. Hårdvara med en Bluetoothmodul skapades och kopplades mot PCM för att möjliggöra kommunikation via Bluetooth. En mobilapplikation utvecklades i Android studio för att tillåta konfiguration från en mobil enhet. Mjukvaran i PCM modifierades för att kommunicera med Bluetooth-hårdvaran över CAN och även för att tillåta analog styrning av pumpen via en strömstyrd ingång. De grundläggande kraven för systemet uppfylldes och en fungerande prototyp kunde uppvisas vid projektets slut. Prototypen visade stor potential men saknade dock viss funktionalitet som vore önskvärd hos en kommersiell produkt.
This report encompasses the development of a standalone drive card with an accompanying mobile application for control and configuration of a hydraulic system. The purpose of the project was to - according to an inquiry from the client Bosch Rexroth - investigate whether the pump control module (PCM) from the existing Spider 3 control system could be used as a standalone module. Hardware including a Bluetooth module was assembled and connected to the PCM to allow communication over Bluetooth Low Energy (BLE). A mobile application where developed in Android Studio to allow configuration from a mobile device. The software of the PCM were modified to communicate with the Bluetooth hardware over CAN and also for allowing analog control of the hydraulic pump through a current controlled input.The basic demands for the system were met and a working prototype could be demonstrated at the end of the project. The prototype did show large potential but was lacking some functionality which would be desirable for a commercial product.
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Persson, Daniel, and Eric Vinjegaard. "Undersökning av materialegenskaper för nytt segjärn i jämförelse med traditionellt." Thesis, Högskolan Väst, Avd för maskinteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-5348.

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I denna rapport beskrivs en undersökning och jämförelse av två olika sorters segjärn. Detvå materialen som har studerats har varit det segjärnet som används i Parker Hannifinsnuvarande hydraulikmotorer och ett nytt segjärn, vars mekaniska egenskaper har påståttsvara mer fördelaktiga. Målet med arbetet var att få fram en tillförlitlig jämförelse av de olikamaterialen och avgöra om det fanns ett tydligt underlag för att inleda processen av ett byteav material i vissa komponenter i Parker Hannifins produkter.Det utfördes jämförelser mellan de olika materialens mekaniska egenskaper baserade delspå information som redan fanns om materialen och dels på data insamlad vid tester medskärande bearbetning. Förslitning på verktygen vid fräsning studerades tillsammans medskärkraften med olika sorters skärdata. Restspänningar efter ingreppen i de båda materialenmättes med en röntgendiffraktometer.Resultaten gav inga signifikanta indikationer på att ett materialbyte skulle innebära en lägreproduktionskostnad, dock visade analyser att det nya materialet tål att bearbetas fortare ändet traditionella segjärnet och att fler undersökningar bör göras. Efter att ha analyseratmekaniska egenskaper så som hållfasthet, hårdhet, hårdhetsspridning och styvhet kundeslutsatser dras. Det visade sig att det nya segjärnet hade högre hållfasthet och jämnarehårdhet, men det hade även lägre styvhet. Styvheten i materialet är en viktig faktor dåläckage kan uppstå i hydraulikmotorer om materialen inte har tillräckligt hög styvhet.Mätningarna av skärkraften hos de båda materialen tydde på att det kunde uppstå högrestandardavvikelse, eller variationer av skärkraften vid fräsning av det traditionella segjärnet.Eftersom dessa variationer endast visade sig ett fåtal gånger går det inte att entydigtkonstatera att det nya materialet har mer fördelaktiga bearbetningsegenskaper. För att draen sådan slutsats hade det krävts ytterligare analyser på fler detaljer.
This report describes a study and comparison of two different types of ductile iron. Thetwo materials that have been studied have been the ductile iron used in Parker Hannifin'scurrent hydraulic motors and a new ductile iron, whose mechanical properties are said tobe more advantageous. The goal of this study was to obtain a reliable comparison of thedifferent materials and determine if there were clear grounds for initiating the process of achange of material in certain components of Parker Hannifin’s products.Comparisons between the mechanical properties of the materials were based partly oninformation that was already available and partly on data collected through machining trails.The wear on the tools after milling was studied along with the cutting force from variouskinds of cutting data. Residual stresses after the operation in both materials were measuredby an X-ray diffractometer.The results yielded no significant indication that a change of material would result in lowerproduction cost, however, analyses showed that the new material can withstand beingprocessed faster than the traditional ductile iron and that more studies should beconducted. After analyzing the mechanical properties, such as strength, hardness, hardnessvariation and stiffness, conclusions could be drawn. It turned out that the new ductile ironhad higher strength and more uniform hardness, but it also had lower stiffness. Thestiffness of the material is an important factor because if the materials do not havesufficient rigidity, leakage can occur in hydraulic motors. Measurements of the cutting forceof the two materials indicated that there could be a higher standard deviation, orfluctuation of the cutting force during milling of the traditional ductile iron. Since thesevariations only appeared a few times, it is difficult to conclude that the new ductile ironwould be more advantageous when it comes to machining. To be able to draw that kind ofconclusion would require more collected data.
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Carlsson, Lisa. "Tillförlitligheten i beräknade dimensionerande flöden i två mindre vattendrag med trånga sektioner." Thesis, Uppsala universitet, Luft-, vatten och landskapslära, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-206944.

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I Sverige finns idag en vedertagen metod för att bestämma dimensionerande flöde för dammanläggningar. De teoretiska beräkningarna av dimensionerande flöde för dammanläggningar tillhörande flödesdimensioneringsklass I baseras på HBV-modellen, en begreppsmässig hydrologisk beräkningsmodell som beskriver samspelet mellan de meteorologiska och hydrologiska förhållanden som råder inom ett avrinningsområde. Begreppsmässiga hydrologiska modeller baseras på vattenbalansen och används för att bestämma tillrinning till vattendrag, sjöar eller andra vattenförekomster. Vid hydrologisk modellering med begreppsmässiga modeller tas ingen explicit hänsyn till vattendragets geometri. Trånga sektioner i naturliga vattendrag kan hindra vattnets framfart och orsaka dämning uppströms den trånga sektionen. Till följd av det kan en del av flödestoppen kvarhållas i terrängen och därmed dämpas och fördröjas. Hydrauliska modeller beskriver vattnets flöde genom vattendraget. Högupplöst höjddata utgör grunden i en hydraulisk modell och vid hydraulisk modellering tas således hänsyn till avrinningsområdets topografi såväl som vattendragets batymetri. Syftet med detta examensarbete var att analysera tillförlitligheten i beräknade dimensionerande flöden framtagna enligt Flödeskommitténs Riktlinjer för bestämning av dimensionerande flöden för dammanläggningar. Genom att upprätta hydrauliska modeller över två specifika vattendragssträckor som berörs av trånga sektioner kunde det undersökas huruvida de trånga sektionerna orsakar någon flödesdämpning samt om flödesdämpningen beror av storleken på vattenflödet. De områden som var föremål för denna studie var en delsträcka av Övre Lagan samt en del av Bolmån som är Lagans största tillflöde. Resultaten visade att flödestopparna dämpades och att det var de trånga sektionerna som orsakade den huvudsakliga flödesdämpningen. Vidare visade resultaten att den relativa dämpningen beror av storleken på inflödet i de hydrauliska modellerna. Den relativa dämpningen av det dimensionerandet flödet vid Övre Lagan var marginell, 1,2 % respektive 2,0 %, medan den vid Bolmån uppgick till 6,7 %. Det faktum att de dimensionerande flödena emellertid dämpades i de båda fallen bör vara skäl nog att se över metoden för bestämmandet av dimensionerande flöden för dammanläggningar tillhörande flödesdimensioneringsklass I och undersöka huruvida det är möjligt att innefatta hydraulisk modellering i den idag vedertagna beräkningsmetodiken.
In Sweden there is currently an accepted method for determining the design floods for dams which is described in The Swedish Design Flood Guidelines. The theoretical calculations of the design floods for dams associated with Flood Design Category I are based on the HBV model, a conceptual hydrological model that describes the interaction between the meteorological and hydrological conditions within a basin. Conceptual hydrological models are based on the water balance and are used to determine runoff to streams, lakes or other bodies of water. Conceptual hydrological models do not take explicit account for the geometry of the watercourse. Narrow sections in natural streams may prevent water flow and cause impoundment upstream from the narrow section. Following that, a part of the flow peak can be retained in the terrain and thereby attenuated and delayed. Hydraulic models describe the flow of water through the watercourse. High resolution elevation data is the foundation of a hydraulic model and hydraulic models thus take into account the basin topography as well as the watercourse bathymetry. The objective of this study was to analyze the reliability of design floods that have been determined according to The Swedish Design Flood Guidelines. By establishing hydraulic models of two specific streams affected by narrow sections it could be examined whether the narrow sections cause flow attenuation and whether the flow attenuation depends on the size of the water flow. The areas which were the subject of this study were a subsection of River Lagan and part of River Bolmån, which is River Lagan’s largest tributary. The results of the hydraulic model simulations showed that the flow peaks were attenuated and that it was the narrow sections that caused the main flow attenuation. Furthermore, the results showed that the relative attenuation depends on the size of the inflow in the hydraulic models. The relative attenuation of the design floods was 1.2 % and 2.0 % at River Lagan and 6.7 % at River Bolmån. The relative attenuation of the design flood was thus marginal at River Lagan. The fact that the design floods nevertheless were attenuated at both areas which were the subject of this study should be reason enough to review the method for the determination of design floods for dams associated with Flood Design Category I and examine whether it is possible to include hydraulic modeling in today’s conventional calculation methodology.
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Garcia, Luis Jimenez, Guzman Osnar Iruri, and Sissi Santos Hurtado. "Hazard map based on the simulation of sludge flow in a two-dimensional model, Case Quebrada Malanche-Punta Hermosa -Lima-Perú." Institute of Electrical and Electronics Engineers Inc, 2020. http://hdl.handle.net/10757/656417.

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El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.
This research presents the numerical simulation to reproduce the transport and deposition processes of the sludge flow on March 15, 2017, strongly impacting the town of Pampapacta in Punta Hermosa-Peru.The debris flow initiation process in the basin was represented by hydrographs obtained from the estimated volumes of stormwater runoff and solid materials. The sludge flow was modeled in Flo2D to calculate hazard maps with the discharge event and others with different return periods.The numerical simulation results show acceptable results in relation to what happened. The model used to assess the hazard due to debris flow can predict and delineate, with acceptable precision, potentially hazardous areas for a landslide. The application of the proposed methodology to assess the hazard of disasters due to debris flows in basins and streams is useful to understand the extent of the impact of the mud flow during extreme weather events, as well as to develop emergency plans and formulate disaster policies.
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Elwood, David E. Y. "Hydraulic fracture experiments in a frictional material and approximations for maximum allowable mud pressure." Thesis, Kingston, Ont. : [s.n.], 2008. http://hdl.handle.net/1974/1343.

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Panagiotopoulos, Ioannis Polykarpos. "Clay influence on the threshold of movement and physical parameters of sand-mud deposits." Thesis, University of Southampton, 1996. https://eprints.soton.ac.uk/361139/.

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The erosion of mixed sediment deposits is described, under the action of unidirectional steady currents and (simulated) waves, separately, and in combination. The experiments were undertaken using a rectangular recirculating flume, incorporating an oscillating tray. The mixtures consisted of angular fine-grained quartz sands (D50=152.5 m and 215 m) combined with a very cohesive estuarine mud. Time-averaged erosion threshold current speeds, during the unidirectional and combined flow experiments, were measured. In addition, pore (water) pressure measurements, during the oscillatory and combined flow experiments, have been monitored. The results obtained under the action of currents show that there is an incremental increase, with clay content, in critical erosion shear stress. This increase is small for clay percentages lower than 11% (dry weight); it is larger for clay contents in excess of 11-14%. The quantity and cohesive nature of the clay fraction are suggested as the mechanisms to explain the bi-modal pattern of sediment erodibility. When the mixtures were subjected to different pre-threshold current speeds, together with various time-periods of flow, the critical erosion shear stress was higher than the original. In this process, current velocity is more important than flow duration. Data obtained under the influence of simulated wave action show that, for clay contents 11%, sediment erodibility is unaffected by the increasing clay concentrations. However, with clay contents in excess of 11-14%, a positive linear function may describe the variation in erosion threshold with clay content. Results obtained under the co-linear combined action of waves and currents demonstrate a significant and positive linear relation between erosion threshold and the cohesive additive. Furthermore, waves protect the sediment/water interface from the eroding competence of the steady currents. The resistance to erosion increases with a decrease in wave period (from 10 s to 6 s).
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Erlandsson, Marie. "Överbelastningsproblem för avloppsledningsnät och kostnadseffektiva åtgärder : En fallstudie med förenklad hydraulisk modell." Thesis, Uppsala University, LUVAL, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-128865.

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Många svenska kommuner har idag problem med överbelastade avloppsledningssystem. Det kan bland annat resultera i källaröversvämningar i närbelägna fastigheter, överbelastade reningsverk eller bräddningar till recipienten. För att motverka dessa effekter kan olika åtgärder vidtas. Åtgärderna kan vara olika lämpliga beroende på typ av område och kostnaderna för genomförandet kan variera kraftigt och ha olika miljöpåverkan. Detta innebär att det är viktigt att väga samman effektiviteten av olika åtgärder, deras miljöpåverkan, kundnytta och kostnad.

Syftet med examensarbetet var att med hjälp av ett hydrauliskt modelleringsverktyg (PCSWMM) studera ett antal typområden och ta fram en förenklad modell. Modellen ska enkelt kunna anpassas till olika områden och ge en översiktlig bild av situationen i områdets ledningssystem. Därmed kan eventuella överbelastningsproblem lokaliseras och en kostnadseffektiv lösning testas.

En hydraulisk modell utvecklades för Viksängsvägens avrinningsområde i Södertälje kommun. Det är ett äldre område med underdimensionerade ledningar vilket orsakar problem vid hård belastning. Effekten av olika åtgärder testades i modellen och en kostnadsanalys gjordes för att utreda vilken åtgärd som var mest kostnadseffektiv.

En grenad modell visade sig ge bäst beskrivning av Viksängsvägens avrinningsområde. Det var en förenklad modell som gick relativt snabbt att sätta upp för ett nytt område och som tog hänsyn till avrinningsvolym, ledningskapacitet och ledningssystemets struktur. Modellen kräver dock en del information om ledningssystemets uppbyggnad och de hårdgjorda ytornas fördelning över området.

Den åtgärd som rekommenderades för Viksängsvägens avrinningsområde var att bygga utjämningsmagasin i anslutning till Viksängsvägen. Detta för att kostnaden var relativt liten jämfört med andra åtgärder samt för de positiva effekter åtgärden har på miljön och människorna som bor och vistas i området.

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Ohlsson, Philip, and Alexander Tived. "Analys av Hydraulic Hydro Storage för mekanisk energilagring samt jämförelse med andra storskaliga mekaniska energilagringssystem." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233218.

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En jämförelse mellan olika typer av mekanisk lagring av energi har gjorts. Nykomlingen Hydraulic Hydro Storage (HHS) har undersökts och ställts mot Compressed Air Energy Storage (CAES) och Pumped Hydro Storage (PHS) med avseende på verkningsgrad, kapacitet, kostnader och livscykel. De potentiella problemen som studerats hos HHS är seismisk stabilitet och tätningen. Analysen har gjorts genom litteraturstudie, beräkningar, intervju med grundarna Heindl Energy och kritisk granskning av deras information. Med den växande tillämpningen av förnyelsebar energi kommer problemet med lagringen av denna, varpå denna studie försöker besvara om HHS är ett komplement alt. substitut till framtidens energimarknad. Resultaten visade goda möjligheter att lösa problem med tätning och seismisk stabilitet. Jämförelsevis ställer sig HHS bra på verkningsgrad, livslängd, pris per MWh, och miljöpåverkan. På använd landyta och kapacitet presterar den mindre bra, men planerad kapacitet tros öka rejält under kommande decennier. Dessutom bedöms HHS kunna komplettera andra lagringsmetoder i en växande förnyelsebar energisektor.
A comparison between different methods of mechanical energy storage was made. The newcomer Hydraulic Hydro Storage (HHS) was evaluated and compared to Compressed Air Energy Storage and Pumped Hydro Storage (PHS) with respect to efficiency, costs, capacity, and lifecycle. Potential problems seismic stability and sealing were investigated further. The analysis was made thru literature study, calculations, interview with the founders and critical examination of their website and information. With the growing energy market comes the problems with energy storage, and our study aims to evaluate if HHS would complement the future energy market. The results showed good chances to solve sealing and seismic stability issues. Comparatively Hydraulic Hydro Storage excels at efficiency, lifespan, environmental impact and price/MWh. It performed average on capacity and area used although the former might see a substantial increase within decades. Additionally HHS is deemed to complement other mechanical energy solutions in a growing renewable energy market.
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Tercan, Erdem. "Managed Pressure Drilling Techniques, Equipment &amp." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611824/index.pdf.

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In the most of the drilling operations it is obvious that a considerable amount of money is spent for drilling related problems
including stuck pipe, lost circulation, and excessive mud cost. In order to decrease the percentage of non-productive time (NPT) caused by these kind of problems, the aim is to control annular frictional pressure losses especially in the fields where pore pressure and fracture pressure gradient is too close which is called narrow drilling window. If we can solve these problems, the budget spent for drilling the wells will fall, therefore enabling the industry to be able to drill wells that were previously uneconomical. Managed Pressure Drilling (MPD) is a new technology that allows us to overcome these kinds of drilling problems by controlling the annular frictional pressure losses. As the industry remains relatively unaware of the full spectrum of benefits, this thesis involves the techniques used in Managed Pressure Drilling with an emphasis upon revealing several of its lesser known and therefore less appreciated applications.
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Lauri, André. "Mekanisk kopplingslösning för baxning med Hägglunds hydraulmotorer." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-186181.

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Bosch Rexroth utvecklar och tillverkar Hägglunds hydraulmotorer. Motorerna används vid många olika industriella applikationer. Idag används motorerna även vid baxning och målet med examensarbetet var att ta fram ett kopplingskoncept för baxning samt tillverkningsunderlag för denna koppling. Syftet med examensarbetet var att skapa en kopplingslösning mellan motor och kundaxel för Hägglunds hydraulmotor CB 400 samt CB 840. I dagsläget finns den mindre motorserien CA för baxning, men kunderna har ett behov att använda motorserien CB som klarar högre vridmoment än motorserien CA. Eftersom uppdelningen gäller för motorstorlekarna CB 400 samt CB 840, krävs två olika storlekar av kopplingar samt axlar. Först togs sex kopplingskoncept fram. Med beslut av personal hos Bosch Rexroth sattes sedan de fyra mest relevanta koncepten in i en jämförelsetabell för att poängsättas efter olika kriterier. Av de fyra koncepten i jämförelsetabellen valdes koncept tre för att arbeta vidare med. Detta koncept handlade om att ta den befintliga baxningslösningen och dimensionera upp denna för vridmomenten som motorerna CB 400 samt CB 840 kan skapa. Här antogs samma material och standarder på de två nya kopplingarna som för den befintliga kopplingen till CA serien. Bosch Rexroth har idag tillgång till alla dokument och underlag som har skapats för båda kopplingarna och de kommer att arbeta vidare på dessa för att på sikt kunna tillhandahålla en färdig produkt.
Bosch Rexroth develops and manufactures Hägglund’s hydraulic motors. The motors are used in many industrial applications. Nowadays, the motors are also used for inching, and the goal of this thesis was to develop a coupling concept for their motor series CB and develop manufacturing basis for this coupling. The purpose of this thesis was to establish a coupling solution between the motor and the costumer shaft for the motors CB 400 and CB 840. At present, there is the smaller motor of the CA series for inching, but customers would like to use the motor of the CB series, which can handle higher torques than the motors of the CA series. Since the division applies for the CB 400 and the CB 840, two different sizes of couplings and shafts are required. At first, six coupling concepts were developed. With a decision making by staff at Bosch Rexroth, the four most relevant concepts were then put into a comparison table to be scored according to different criterias. Of the four concepts in the comparison table, concept three was chosen to work on further. This concept involved the existing inching solution. The task was then to dimension it for the torques that the CB 400 and CB 840 motors can create. Hence the same materials and standards were adopted on the two new couplings as for the existing coupling of the CA series. Bosch Rexroth today has access to all documents and basis that have been created for both couplings and they will continue to work on these in order to be able to provide a finished product in the long term.
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Books on the topic "Mud hydraulics"

1

Rabia, H. Rig hydraulic. Newcastle upon Tyne, Eng: Entrac Software, 1989.

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Mader, Detlef. Hydraulic proppant fracturing and gravel packing. Amsterdam: Elsevier, 1989.

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Gidley, John L. An engineer's guide to proppant selection. [Houston, Tex.]: J.L. Gidley, 1988.

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1931-, Branover Herman, Unger Yeshajahu, and Beer-Sheva International Seminar on Magnetohydrodynamic Flows and Turbulence (8th : 1996 : Ben-Gurion University of the Negev), eds. Progress in fluid flow research: Turbulence and applied MHD. Reston, Va: American Institute of Aeronautics and Astronautics, 1998.

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A, Sloto Ronald. Evaluation of borehole geophysical logs and hydraulic tests, phase III, at AIW Frank/Mid-County Mustang Superfund Site, Chester County, Pennsylvania. New Cumberland, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

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Sloto, Ronald A. Evaluation of borehole geophysical logs and hydraulic tests, phase III, at AIW Frank/Mid-County Mustang Superfund Site, Chester County, Pennsylvania. New Cumberland, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

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A, Sloto Ronald. Evaluation of borehole geophysical logs and hydraulic tests, phase III, at AIW Frank/Mid-County Mustang Superfund Site, Chester County, Pennsylvania. New Cumberland, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

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Sloto, Ronald A. Evaluation of borehole geophysical logs and hydraulic tests, phase III, at AIW Frank/Mid-County Mustang Superfund Site, Chester County, Pennsylvania. New Cumberland, Pa: U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

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Applied Drilling Circulation Systems Hydraulics Calculations And Models. Gulf Professional Publishing, 2011.

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U.S. Army Engineer Waterways Experiment Station., ed. Mud Mountain outlet structure: Hydraulic model investigation. Vicksburg, MS: US Army Corps of Engineers, Waterways Experiment Station, 1993.

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Book chapters on the topic "Mud hydraulics"

1

Whittaker, Alun. "The Mud Circulating System." In Theory and Applications of Drilling Fluid Hydraulics, 51–58. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5303-1_4.

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Kawanishi, Kiyoshi, and Tomoya Yokoyama. "Transport Characteristics of Suspended Sediment on Mud Flat in a Tidal Channel." In Advances in Water Resources and Hydraulic Engineering, 809–14. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-89465-0_142.

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Rupasinghe, K. D. K., L. A. R. L. Weerarathne, and L. C. Kurukulasuriya. "Hydraulic Characteristics of Ballast Subjected to Particle Degradation and Mud Pumping." In Lecture Notes in Civil Engineering, 23–32. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-4412-2_3.

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Shen, Hao, Hao Li, Baojiang Sun, Xuerui Wang, Chengzhen Shi, Meipeng Ren, and Zhiming Yin. "Study on Throttling Characteristics of Hydraulic Cylinder Throttle Valve and Control Strategies for MPD." In Lecture Notes in Civil Engineering, 84–94. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-0960-3_8.

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Guo, Boyun, and Gefei Liu. "Mud Hydraulics Fundamentals." In Applied Drilling Circulation Systems, 19–59. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-12-381957-4.00002-4.

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Guo, Boyun, and Gefei Liu. "Mud Hydraulics Optimization." In Applied Drilling Circulation Systems, 81–105. Elsevier, 2011. http://dx.doi.org/10.1016/b978-0-12-381957-4.00004-8.

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Qian, X., Tadaharu Ishikawa, M. Umeda, and F. Gao. "Numerical simulation on entrainment of fluid mud in Lake Kasumigaura." In Environmental Hydraulics and Sustainable Water Management, Two Volume Set, 2145–51. CRC Press, 2004. http://dx.doi.org/10.1201/b16814-349.

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Tokunaga, T., N. Matsunaga, M. Kodama, and H. Yasuda. "The mud suspension due to strong tidal motion and the oxygen consumption." In Environmental Hydraulics and Sustainable Water Management, Two Volume Set, 2269–75. CRC Press, 2004. http://dx.doi.org/10.1201/b16814-368.

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Gaurina-Medjimurec, Nediljka, and Borivoje Pasic. "Lost Circulation." In Transportation Systems and Engineering, 1295–315. IGI Global, 2015. http://dx.doi.org/10.4018/978-1-4666-8473-7.ch066.

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Lost circulation is defined as the uncontrolled flow of mud into a thief zone and presents one of the major risks associated with drilling. The complete prevention of lost circulation is impossible, but limiting circulation loss is possible if certain precautions are taken. Failure to minimize lost circulation can greatly increase the cost of drilling, as well as the risk of well loss. The risk of drilling a well in areas known to contain potential zones of lost circulation such as fractured, cavernous, or high permeability formations is a key factor in making a decision to approve or cancel a drilling project. The successful management of lost circulation should include identification of potential loss zones, optimization of drilling hydraulics, and remedial measures when lost circulation occures.
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Gaurina-Medjimurec, Nediljka, and Borivoje Pasic. "Lost Circulation." In Risk Analysis for Prevention of Hazardous Situations in Petroleum and Natural Gas Engineering, 73–95. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4777-0.ch004.

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Lost circulation is defined as the uncontrolled flow of mud into a thief zone and presents one of the major risks associated with drilling. The complete prevention of lost circulation is impossible, but limiting circulation loss is possible if certain precautions are taken. Failure to minimize lost circulation can greatly increase the cost of drilling, as well as the risk of well loss. The risk of drilling a well in areas known to contain potential zones of lost circulation such as fractured, cavernous, or high permeability formations is a key factor in making a decision to approve or cancel a drilling project. The successful management of lost circulation should include identification of potential loss zones, optimization of drilling hydraulics, and remedial measures when lost circulation occures.
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Conference papers on the topic "Mud hydraulics"

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Sunthankar, A. A., S. Miska, E. Kuru, and A. Kamp. "New Developments in Aerated Mud Hydraulics for Horizontal Well Drilling." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 2000. http://dx.doi.org/10.2118/62897-ms.

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Sunthankar, A. A., E. Kuru, S. Miska, and A. Kamp. "New Developments in Aerated Mud Hydraulics for Drilling in Inclined Wells." In SPE Production and Operations Symposium. Society of Petroleum Engineers, 2001. http://dx.doi.org/10.2118/67189-ms.

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Guo, Boyun, Kai Sun, and Ali Ghalambor. "A Closed Form Hydraulics Equation for Aerated Mud Drilling in Inclined Wells." In SPE Latin American and Caribbean Petroleum Engineering Conference. Society of Petroleum Engineers, 2003. http://dx.doi.org/10.2118/81070-ms.

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Guo, Boyun, and Ali Ghalambor. "Pressure Stability Analysis for Aerated Mud Drilling Using an Analytical Hydraulics Model." In SPE/IADC Underbalanced Technology Conference and Exhibition. Society of Petroleum Engineers, 2004. http://dx.doi.org/10.2118/91356-ms.

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Podryabinkin, E. V., R. May, N. M. Tropin, V. V. Tarasevich, and Y. S. Ignatenko. "Systematical Flow Simulation and Database Development for Fast and Accurate Mud Hydraulics Solution." In EAGE Workshop on High Performance Computing for Upstream. Netherlands: EAGE Publications BV, 2014. http://dx.doi.org/10.3997/2214-4609.20141932.

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Guo, B., K. Sun, and A. Ghalambor. "An Analytical Solution for Aerated Mud and Foam Drilling Hydraulics in Deviated Holes." In Canadian International Petroleum Conference. Petroleum Society of Canada, 2003. http://dx.doi.org/10.2118/2003-032.

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Gul, Sercan, Mohamed El-Zein, Hamad Aldin, Munir Aldin, Chris Mullin, and Eric van Oort. "Automated Mud Check with an AI-Enhanced Automated Mud Skid: Results of a Long-Term Permian Field Trial." In IADC/SPE International Drilling Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/208718-ms.

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Abstract Accurate, consistent, and frequent measurement of circulation fluid properties is essential for optimum well construction. A full mud check is conducted by mud engineers typically twice a day using equipment that is now many decades old, providing data that is often of questionable quality and reliability. Sporadic and inaccurate mud check information can be the cause of fluid-related non-productive time and increased drilling costs associated with e.g. wellbore instability, lost circulation, well control and hole cleaning problems. As an alternative to manual measurements, an AI-Enhanced Automated Mud Skid (AMS) is introduced here. The AMS digitalizes and automates mud measurements, monitoring, and reporting. The current design is able to provide more than 30 mud checks at elevated temperature during a 24-hour period. The AMS uses the data obtained from various inline sensors (i.e., Coriolis flowmeter, pressure and temperature sensors, oil-water cut analyzer, etc.) together with machine learning algorithms to report automated mud check results for water and oil-based drilling fluids. During a field trial in the Permian basin with an independent operator to evaluate the overall reliability and accuracy of the system, the unit provided real-time measurements of non-Newtonian YPL viscosity, rheological parameters (3, 6, 100, 200, 300 and 600 rpm readings), friction factor, critical Reynold's number, pressurized density, and oil-water ratio with temperature control up to 150°F. The system also provides remote equipment control, system cleaning, health monitoring, real-time read-out of mud properties, and the connection to a real-time hydraulics software for ECD calculation and drilling margin control. During the field trial, the unit performed more than 500 WBM tests at 120°F and 1000 OBM tests at 150°F with an average accuracy of 95% to estimate rheological properties, density, and oil/water ratio of drilling fluids. Overall operational reliability was calculated as 93% taking into account mechanical failures and lessons learned from the initial field trial phase. The AMS provided benefits by avoidance of excess chemical mud treatment and dilution, efficiency gain with increased ROP from improved hydraulics, decreased fluid-related non-productive time (NPT) and trouble cost, improved consistency and accuracy of drilling fluid measurements, and novel ways of working for the mud engineer. The technology described here opens the door to fully automated fluid monitoring, maintenance, and solids control in well construction operations. This was shown to benefit well construction efficiency (e.g., lowering drilling costs by better cuttings transport), quality, productivity (e.g., reducing reservoir impairment from unwanted solids), and safety (e.g., lowering the incidence of well control and lost circulation events due to better equivalent circulating density (ECD) management in narrow margin drilling environments).
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Rao, Sai Sashankh, Juan Mollica, Qian Wu, Ganesh Arunkumar Samdani, and Vishwas Paul Gupta. "Enabling Foam Application in PMCD Using a Hydraulics Model." In IADC/SPE International Drilling Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/208730-ms.

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Abstract Pressurized Mud Cap Drilling (PMCD) requires use of an annulus fluid that is slightly underbalanced to the reservoir; the use of foam is proposed for low bottomhole pressure applications. Such an application requires a foam hydraulics model to guide the planning and operations as pressure management is key for PMCD. This paper presents the development of a novel 1-D steady state wellbore scale foam hydraulics tool and its application to a PMCD operation. User inputs include non-Newtonian rheology, PVT, solubility, temperature profile, pipe RPM, and reservoir pressure. The primary operational parameters are the gas/liquid rates at the surface. The density and pressure profile of foam in the wellbore is calculated to guide the formulation development and determine optimum operational parameters. The challenge is to develop a foam that can at the same time balance reservoir pressure (density design), be pumped at the desired downhole rates (for influx management) at permissible surface pressures (viscosity design), and is stable under wellbore pressures and temperatures (formulation design). These opposing requirements make the design an iterative process. Sample hydraulics results are presented for an example well and a sensitivity analysis is performed to demonstrate the effect that various operational and well parameters have on the hydraulics of a foam system. Both the pumps-on and pumps-off scenarios are studied. Additionally, a CFD analysis is performed to study the effect of drill pipe rotation in an eccentric annulus on friction pressure drop. A non-monotonic trend is observed due to the competing effects between the shear-thinning behavior (reduces viscosity) and turbulence (increases effective viscosity). The hydraulic model is verified by comparing against analytical solutions, an industry standard drilling software, experimental data, and CFD simulations. The paper demonstrates the importance of a foam hydraulics tool for a PMCD application and how it factors into the overall design of a foam system. It is shown to be a critical part of the foam formulation development, selection of density, rheology, gas/liquid ratio, and target pump rates and expected pressures.
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Ge, Yunhua, Yunyi Mei, Songjie Zhang, Yanlong Zhang, Guanglai Liu, Hao Yang, Qi Wang, David He, and Josh Zhang. "Development of Online Drilling Fluid Property Logging System." In IADC/SPE International Drilling Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/208694-ms.

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Abstract Continuously monitoring of drilling fluid properties and simulating of down hole hydraulics is critical and beneficial for safe and efficient drilling. However, the drilling fluids properties are generally taken once every regulated interval and the downhole wellbore conditions and drilling fluids performance are judged accordingly and sometimes experientially for lack of updated data. In this paper, we present a novel unit called On –line Drilling Fluids Properties Logging System (ODFPLS) for real-time measurement of drilling fluids property and software for downhole hydraulics modeling by integrating of these real-time measured data. The ODFPLS unit consists of four testing modules, they are Density module, Rheology module, Funnel Viscosity module, and Ion Content module. During working, the fluid sample is sucked in and flowed first to the Density module, tested there and then flowed to other modules in above order and finally discharged into waste pits without any human intervention. The test data is stored in the database of well-site digital platform and shared to the Remote Operational Centers (ROCs) for drilling fluids performance diagnosis and downhole hydraulics modeling The indoor and field pilot tests showed that the unit is capable of measuring fluid properties such as mud density, funnel viscosity, rheological behavioral parameters, calcium and chlorine concentration and so on properly and accurately while drilling compared with manual measurement by lab operators. The drilling fluids performance diagnosis and hydraulics modeling provides not only rheological mode identification but also the real time equivalent circulating density ECD and equivalent static density ESD at any point in the wellbore during drilling. It also delivers surge and swab pressure calculation as well as ECD data while tripping drill pipe or setting casing. The timely availability of the information enables the mud engineer and drilling engineer to aware the status and trends of the downhole conditions and improve efficiency in decision making.
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Gul, Sercan. "Machine Learning Applications in Drilling Fluid Engineering: a Review." In ASME 2021 40th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/omae2021-63094.

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Abstract Drilling fluid (mud) serves various purposes in drilling operations, the most important being the primary well control barrier to prevent kicks and blowouts. Other duties include, but not limited to, maintaining wellbore stability, removing and transporting formation cuttings to the surface, cooling and lubricating downhole tools, and transmitting hydraulic energy to the drill bit. Mud quality is therefore related to most of the problems in drilling operations either directly or indirectly. The physics-based models used in the industry with drilling fluid information (i.e., cuttings transport, well hydraulics, event detection) are computationally expensive, difficult to integrate for real-time analysis, and not always applicable for all drilling conditions. For this reason, researchers have shown extensive interest in machine learning (ML) approaches to alleviate their fluid-related problems. In this study, a comprehensive review of the abundant literature on the various applications of ML in oil and gas operations, concentrating mainly on drilling fluids, is presented. It was shown that leveraging state-of-the-art supervised and unsupervised ML methods can help predict or eliminate most fluid-related issues in drilling. The review discusses various ML methods, their theory, applications, limitations, and achievements.
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Reports on the topic "Mud hydraulics"

1

Sharp, Jeremy A., Duncan B. Bryant, and Gaurav Savant. Low-Sill Control Structure Gate Load Study. U.S. Army Engineer Research and Development Center, May 2022. http://dx.doi.org/10.21079/11681/44340.

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The effort performed here describes the process to determine the gate lifting loads at the Low-Sill Control Structure. To measure the gate loads, a 1:55 Froude-scaled model of the Low-Sill Control Structure was tested. Load cells were placed on 3 of the 11 gates. Tests evaluated the gate loads for various hydraulic heads across the structure. A total of 109 tests were conducted for 14 flows with each flow having two gate settings provided by the United States Army Corps of Engineers, New Orleans District. The load data illustrated the potential for higher gate lifting loads (GLL) to occur at the mid-range gate opening (Go) for Gates 3 and 6. While for Gate 10, the highest GLL (452 kips, maximum load in testing) was at a Go = 4.2 ft. Conversely, for the low-flow bays, the highest load occurred at Go = 24.86 ft.
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Wibowo, Johannes, and Jamie López-Soto. Field Jet Erosion Tests on Benbrook Dam, Texas. Engineer Research and Development Center (U.S.), December 2021. http://dx.doi.org/10.21079/11681/42545.

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This report summarizes the results of eight field Jet Erosion Tests (JETs) performed on Benbrook Dam, TX. The results from these tests will be used by the U.S. Army Corps of Engineers, Fort Worth District, in assessments of the erosion resistance of the Benbrook Dam with regards to possible overtopping by extreme flooding. The JETs were performed at four different locations, i.e., two locations at the lowest crest elevation and two locations at the mid-slope face of the downstream embankment. Variations in estimated critical hydraulic shear stress and erosion rate values may have been caused by differences in soil composition, i.e., when the material changed from silt/sand to clay. The resulting values of the Erodibility Coefficient, Kd, and Critical Stress, τc, are very useful information in assessing the stability of Benbrook Dam during an overtopping event. Because of the observed natural variability of the materials, combining the erosion parameters presented in this report with the drilling logs and local geology will be imperative for assessing erosion-related failure modes of Benbrook Dam.
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Evaluation of borehole geophysical logs and hydraulic tests, phase III, at AIW Frank/Mid-County Mustang Superfund Site, Chester County, Pennsylvania. US Geological Survey, 2001. http://dx.doi.org/10.3133/wri014004.

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