Hydraulic fracturing consists of a technique capable of stimulating oil wells that have suffered a decline in production over time. It also allows the production in reservoirs that have low permeability through the creation of a network of channels in the rock. In this context, this article aims to numerically simulate the hydraulic fracturing applied in a sandstone reservoir according to data extracted from an oil well located in the Aracaju City field of the Sergipe-Alagoas Basin. To complete this study, a geological model of the reservoir was generated. Subsequently, a fracture was created in the rock-reservoir in a controlled manner using the Perkins and Kern fracture model. Results show that the fracture takes a satisfactory proportion in the reservoir rock, reaching a depth of penetration equivalent to 695.7 meters.
{"title":"HYDRAULIC FRACTURING OF AN ARENITIC RESERVOIR BASED IN THE PERKINS-KERN MODEL USING A STIMPLAN SIMULATOR","authors":"G. B. Silva, L. Rojas, J. A. Soares","doi":"10.5419/bjpg2021-0001","DOIUrl":"https://doi.org/10.5419/bjpg2021-0001","url":null,"abstract":"Hydraulic fracturing consists of a technique capable of stimulating oil wells that have suffered a decline in production over time. It also allows the production in reservoirs that have low permeability through the creation of a network of channels in the rock. In this context, this article aims to numerically simulate the hydraulic fracturing applied in a sandstone reservoir according to data extracted from an oil well located in the Aracaju City field of the Sergipe-Alagoas Basin. To complete this study, a geological model of the reservoir was generated. Subsequently, a fracture was created in the rock-reservoir in a controlled manner using the Perkins and Kern fracture model. Results show that the fracture takes a satisfactory proportion in the reservoir rock, reaching a depth of penetration equivalent to 695.7 meters.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"67 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90447140","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This work addresses the transportation of viscous crude oil as concentrated oil-in-water (O/W) emulsions flowing in a partially submerged onshore pipeline. The main goal of this study is to analyze the effects of inversion point of the water-in-oil emulsion in the pressure drop with the aid of Pipesim® software. Pressure drop is determined by applying the Dukler correlation (Taitel and Dukler, 1976) to represent dead oil viscosity as a function of temperature, and API density using the Hossain correlation (Hossain et al., 2005). The Brinkman model (Brinkman, 1952) is applied to calculate the viscosity of the emulsion, with the Brauner and Ullmann (2002) equation for the water cut off method (inversion point). The pipeline, of 3,600 m and 4 inches in diameter, transports the oil and consists of three sections. The first and third sections are above ground and are in contact with the external environment. The intermediate section is sitting on the river bed and is the critical part of the pipeline, once high heat losses are observed. The results of this 1D and non-isothermal problem show that water cuts of 5 and 6%, for low heat exchange and high heat exchange, respectively, make it possible to transport the oil, as an oil-in-water emulsion, through the entire extension of the pipeline. However, a water cut of 10% creates a high-pressure drop in the system, assuring the movement of the fluid in long sections without compromising the system operation. The use of isolation influences the temperature gradient but doesn’t have a high influence on pressure gradient compared to emulsions.
本研究解决了稠油在部分淹没的陆上管道中作为浓缩水包油(O/W)乳剂的输送问题。本研究的主要目的是借助Pipesim®软件分析油包水乳液的反转点对压降的影响。压降是通过应用Dukler相关(Taitel和Dukler, 1976)来表示死油粘度作为温度的函数，而API密度则使用Hossain相关(Hossain et al.， 2005)。采用Brinkman模型(Brinkman, 1952)计算乳状液的黏度，采用Brauner and Ullmann(2002)方程计算水截断法(反演点)。该管道长3600米，直径4英寸，由三段组成，用于输送石油。第一部分和第三部分在地面上，与外部环境接触。中间段位于河床上，是管道的关键部分，一旦观察到高热损失。该一维和非等温问题的结果表明，对于低换热和高换热，含水率分别为5%和6%，使得油作为水包油乳化液通过整个管道延伸输送成为可能。然而，10%的含水率会在系统中产生高压降，确保流体在长段内的运动，而不会影响系统的运行。与乳剂相比，隔离的使用会影响温度梯度，但对压力梯度的影响不大。
{"title":"INVERSION POINT OF EMULSIONS AS A MECHANISM OF HEAD LOSS REDUCTION IN ONSHORE PIPELINE HEAVY OIL FLOW","authors":"M. Justiniano, O. J. Romero","doi":"10.5419/bjpg2021-0002","DOIUrl":"https://doi.org/10.5419/bjpg2021-0002","url":null,"abstract":"This work addresses the transportation of viscous crude oil as concentrated oil-in-water (O/W) emulsions flowing in a partially submerged onshore pipeline. The main goal of this study is to analyze the effects of inversion point of the water-in-oil emulsion in the pressure drop with the aid of Pipesim® software. Pressure drop is determined by applying the Dukler correlation (Taitel and Dukler, 1976) to represent dead oil viscosity as a function of temperature, and API density using the Hossain correlation (Hossain et al., 2005). The Brinkman model (Brinkman, 1952) is applied to calculate the viscosity of the emulsion, with the Brauner and Ullmann (2002) equation for the water cut off method (inversion point). The pipeline, of 3,600 m and 4 inches in diameter, transports the oil and consists of three sections. The first and third sections are above ground and are in contact with the external environment. The intermediate section is sitting on the river bed and is the critical part of the pipeline, once high heat losses are observed. The results of this 1D and non-isothermal problem show that water cuts of 5 and 6%, for low heat exchange and high heat exchange, respectively, make it possible to transport the oil, as an oil-in-water emulsion, through the entire extension of the pipeline. However, a water cut of 10% creates a high-pressure drop in the system, assuring the movement of the fluid in long sections without compromising the system operation. The use of isolation influences the temperature gradient but doesn’t have a high influence on pressure gradient compared to emulsions.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88948946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. R. Santana, J. S. Nunes, I. Pergher, L. Silva, R. V. S. Aquino
This paper presents a flowchart monitoring study to be used on investigating conditions that can promote environmental impact. The study relies on a computational simulation of the natural gas separation process, using COCO modeling software and communication of the WAR algorithm. The WAR algorithm is a methodology used to analyze the potential environmental impact (PEI) of a chemical process, and to study the environmental compatibility of this process. The WAR algorithm proved efficient and effective when accessing the CCO currents to obtain pressure and temperature parameters of each equipment used in the modeling and simulation of the plant. The results indicate the need for optimization requiring further research on ways to reduce the impact generated by the terrestrial toxicity potential, the toxicity potential for man, and the photochemical oxidation potential, which presented higher PEI generated in the process.
{"title":"FLOWCHART MONITORING FOR THE DEVELOPMENT OF SUSTAINABLE PROCESSES USING THE WASTE REDUCTION ALGORITHM IN A NATURAL GAS PRODUCTION PLANT","authors":"R. R. Santana, J. S. Nunes, I. Pergher, L. Silva, R. V. S. Aquino","doi":"10.5419/bjpg2021-0003","DOIUrl":"https://doi.org/10.5419/bjpg2021-0003","url":null,"abstract":"This paper presents a flowchart monitoring study to be used on investigating conditions that can promote environmental impact. The study relies on a computational simulation of the natural gas separation process, using COCO modeling software and communication of the WAR algorithm. The WAR algorithm is a methodology used to analyze the potential environmental impact (PEI) of a chemical process, and to study the environmental compatibility of this process. The WAR algorithm proved efficient and effective when accessing the CCO currents to obtain pressure and temperature parameters of each equipment used in the modeling and simulation of the plant. The results indicate the need for optimization requiring further research on ways to reduce the impact generated by the terrestrial toxicity potential, the toxicity potential for man, and the photochemical oxidation potential, which presented higher PEI generated in the process.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80964739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Polymer flooding has been widely used for enhancing oil recovery, due to the growing number of successful applications around the world. The process aims to increase water viscosity and, thus, decrease the water/oil mobility ratio, thereby improving sweep efficiency. The understanding of the physical mechanisms involved in this enhanced oil recovery process allows us to forecast the application potential of polymer flooding. This work aims to assess physical phenomena associated with heavy oil recovery through polymer flooding using 1D small-scale simulation models. We evaluate the influence of different levels of adsorption, accessible pore volume, residual resistance factor, and polymer concentration on the results and compare their magnitude effect on the results. The models used in this study were built using data from previous lab work and literature. For each one of the mentioned parameters, this work compares the histories of water cut, cumulative water-oil ratio, average pressure, and oil recovery factor. Additionally, water saturation, water viscosity, and water mobility profile were determined for specific periods of the flooding process. The sensitivity analyses showed that high levels of adsorption influence the polymer loss of the advance front, delaying oil recovery. Low values of accessible pore volume lead to a slightly faster polymer breakthrough and oil recovery anticipation. A high residual resistance factor increases the average pressure and improves oil recovery. Higher polymer concentration enhances the displacement efficiency and enhances the recovery factor.
{"title":"SENSITIVITY ANALYSIS FOR POLYMER INJECTION TO IMPROVE HEAVY OIL RECOVERY – SMALL-SCALE SIMULATION STUDY","authors":"M. Zampieri, C. Quispe, R. Moreno","doi":"10.5419/BJPG2020-0018","DOIUrl":"https://doi.org/10.5419/BJPG2020-0018","url":null,"abstract":"Polymer flooding has been widely used for enhancing oil recovery, due to the growing number of successful applications around the world. The process aims to increase water viscosity and, thus, decrease the water/oil mobility ratio, thereby improving sweep efficiency. The understanding of the physical mechanisms involved in this enhanced oil recovery process allows us to forecast the application potential of polymer flooding. This work aims to assess physical phenomena associated with heavy oil recovery through polymer flooding using 1D small-scale simulation models. We evaluate the influence of different levels of adsorption, accessible pore volume, residual resistance factor, and polymer concentration on the results and compare their magnitude effect on the results. The models used in this study were built using data from previous lab work and literature. For each one of the mentioned parameters, this work compares the histories of water cut, cumulative water-oil ratio, average pressure, and oil recovery factor. Additionally, water saturation, water viscosity, and water mobility profile were determined for specific periods of the flooding process. The sensitivity analyses showed that high levels of adsorption influence the polymer loss of the advance front, delaying oil recovery. Low values of accessible pore volume lead to a slightly faster polymer breakthrough and oil recovery anticipation. A high residual resistance factor increases the average pressure and improves oil recovery. Higher polymer concentration enhances the displacement efficiency and enhances the recovery factor.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"31 1","pages":"239-258"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82797194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Relative permeability curves obtained in laboratory are used in reservoir simulators to predict production and establish the best strategies for an oil field. Therefore, researchers study several procedures to obtain relative permeability curves. Among these procedures are the multiple flow rates injection methods. Thus, this work proposes to develop an experimental procedure with multiple increasing flows. To make this feasible, simulations were initially carried out at CYDAR, aiming to establish flow rates and time necessary to achieve system stabilization, within the limits of the equipment. After that, tests were carried out establishing the minimum time of 5 hours to stabilize the oil production, and the differential pressure at each flow rate. The accounting and minimization of the capillary end effect in these tests were also evaluated. Capillary pressure constraints contributed to minimize the number of possible solutions to the optimization problem improving the fit of solutions for a specific case.
{"title":"EVALUATION OF CAPILLARY END EFFECT IN WATER-OIL PERMEABILITY TESTS USING MULTIPLE FLOW RATES TECHNIQUE","authors":"I. D. Santos, F. Eler, D. Nunes, P. Couto","doi":"10.5419/BJPG2020-0019","DOIUrl":"https://doi.org/10.5419/BJPG2020-0019","url":null,"abstract":"Relative permeability curves obtained in laboratory are used in reservoir simulators to predict production and establish the best strategies for an oil field. Therefore, researchers study several procedures to obtain relative permeability curves. Among these procedures are the multiple flow rates injection methods. Thus, this work proposes to develop an experimental procedure with multiple increasing flows. To make this feasible, simulations were initially carried out at CYDAR, aiming to establish flow rates and time necessary to achieve system stabilization, within the limits of the equipment. After that, tests were carried out establishing the minimum time of 5 hours to stabilize the oil production, and the differential pressure at each flow rate. The accounting and minimization of the capillary end effect in these tests were also evaluated. Capillary pressure constraints contributed to minimize the number of possible solutions to the optimization problem improving the fit of solutions for a specific case.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"79 1","pages":"259-267"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81498201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Nobrega, A. S. Zimmermann, S. Mattedi, O. Chiavone-Filho
Distillation columns are important separation equipment that comprise most of the investment needed in a petroleum refining plant. Utilities and energy demands, though, are a concerning factor in the current economic and environmental scenario. The present work proposes a methodology to optimize the energy consumption of a crude oil distillation column using the Distop Calibration technique that allows faster convergence than the Tray-to-Tray method. The methodology presented involves process simulation, sensitivity analysis, factorial design, and the use of response surface methodology. Results show that it is possible to achieve significant gains by changing feed temperature and rectifying vapor flow, causing a relevant reduction in energy consumption. Hence, the methodology can be used as an optimization tool to increase energetic efficiency.
{"title":"OPTIMIZATION OF A PETROLEUM FRACTIONAL DISTILLATION COLUMN USING DISTOP CALIBRATION AND STATISTICAL METHODS","authors":"M. Nobrega, A. S. Zimmermann, S. Mattedi, O. Chiavone-Filho","doi":"10.5419/BJPG2020-0017","DOIUrl":"https://doi.org/10.5419/BJPG2020-0017","url":null,"abstract":"Distillation columns are important separation equipment that comprise most of the investment needed in a petroleum refining plant. Utilities and energy demands, though, are a concerning factor in the current economic and environmental scenario. The present work proposes a methodology to optimize the energy consumption of a crude oil distillation column using the Distop Calibration technique that allows faster convergence than the Tray-to-Tray method. The methodology presented involves process simulation, sensitivity analysis, factorial design, and the use of response surface methodology. Results show that it is possible to achieve significant gains by changing feed temperature and rectifying vapor flow, causing a relevant reduction in energy consumption. Hence, the methodology can be used as an optimization tool to increase energetic efficiency.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"36 1","pages":"221-237"},"PeriodicalIF":0.0,"publicationDate":"2021-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79236246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
One of the main problems of the oil industry is hydrate formation. Hydrates of natural gas are crystalline solids, formed by the association of water molecules and molecules of certain gas in an organized structure. Its occurrence is a natural concern for the Oil & Gas Industry, given the potential risk of flow assurance. Nevertheless, ever-challenging scenarios encourage the search for risk assessment methodologies seeking to identify conditions where hydrates will form, but with little possibility of plugging. The present study aims to develop a water-in-oil emulsion capable of giving hydrate at ambient pressure. This work analyzes the effects of water and surfactant concentration in viscosity, storage, and dissipation modulus in a model water-in-oil emulsion. Rheological data are obtained for several combinations of emulsion components, and their mechanical behavior is related to hydrate formation.
{"title":"RHEOLOGY CHARACTERIZATION OF WATER-IN-OIL EMULSIONS","authors":"P. Silva, M. Naccache, Paulo Mendes","doi":"10.5419/bjpg2020-0011","DOIUrl":"https://doi.org/10.5419/bjpg2020-0011","url":null,"abstract":"One of the main problems of the oil industry is hydrate formation. Hydrates of natural gas are crystalline solids, formed by the association of water molecules and molecules of certain gas in an organized structure. Its occurrence is a natural concern for the Oil & Gas Industry, given the potential risk of flow assurance. Nevertheless, ever-challenging scenarios encourage the search for risk assessment methodologies seeking to identify conditions where hydrates will form, but with little possibility of plugging. The present study aims to develop a water-in-oil emulsion capable of giving hydrate at ambient pressure. This work analyzes the effects of water and surfactant concentration in viscosity, storage, and dissipation modulus in a model water-in-oil emulsion. Rheological data are obtained for several combinations of emulsion components, and their mechanical behavior is related to hydrate formation.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"31 1","pages":"125-135"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76633204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Natural gas distribution systems traditionally rely on the use of carbon steel pipes. As with the engineering of other mechanical components, specific standards for the design of these components and accessories must be applied appropriately for each corresponding project. For the specific case of transmission networks and distribution of piped natural gas, one should use as reference the Brazilian code NBR-12712 Systems design of fuel gas transmission and distribution. Among the various items covered by this code, the sub-item that provides guidelines to calculate the minimum thickness of the pipe for a given design pressure deserves special attention. The present work, therefore, makes a comparative analysis between the wall thicknesses defined by the mentioned standard, the wall thicknesses used in certain operational situations, and the wall thicknesses corresponding to the limit yield and plasticization conditions of the material considered. The present study also reviews the operational data of the COMPAGAS distribution network the company responsible for the distribution of piped natural gas in the state of Paraná, Brazil.
{"title":"COMPARATIVE STUDY OF THE MINIMUM THICKNESS OF NATURAL GAS DISTRIBUTION TUBES FOCUSING ON LOCATED PLASTICIZATION","authors":"J. Almeida, G. Weigert","doi":"10.5419/bjpg2020-0014","DOIUrl":"https://doi.org/10.5419/bjpg2020-0014","url":null,"abstract":"Natural gas distribution systems traditionally rely on the use of carbon steel pipes. As with the engineering of other mechanical components, specific standards for the design of these components and accessories must be applied appropriately for each corresponding project. For the specific case of transmission networks and distribution of piped natural gas, one should use as reference the Brazilian code NBR-12712 Systems design of fuel gas transmission and distribution. Among the various items covered by this code, the sub-item that provides guidelines to calculate the minimum thickness of the pipe for a given design pressure deserves special attention. The present work, therefore, makes a comparative analysis between the wall thicknesses defined by the mentioned standard, the wall thicknesses used in certain operational situations, and the wall thicknesses corresponding to the limit yield and plasticization conditions of the material considered. The present study also reviews the operational data of the COMPAGAS distribution network the company responsible for the distribution of piped natural gas in the state of Paraná, Brazil.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"2014 1","pages":"175-181"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82727389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Venturi valve represents a significant advance in the technology of artificial lift by gas lift. Understanding theoretical and practical aspects related to the use of the valve is fundamental to maximize the benefits of its application. This review article presents the concepts involved in that innovation, discusses advantages and limitations of that technology, provides means to perform gas flow rate calculations, and describes practical aspects that must be observed for a good performance of the valve.
{"title":"VENTURI GAS LIFT VALVE: THEORY AND PRACTICE","authors":"A. R. Almeida","doi":"10.5419/bjpg2020-0015","DOIUrl":"https://doi.org/10.5419/bjpg2020-0015","url":null,"abstract":"The Venturi valve represents a significant advance in the technology of artificial lift by gas lift. Understanding theoretical and practical aspects related to the use of the valve is fundamental to maximize the benefits of its application. This review article presents the concepts involved in that innovation, discusses advantages and limitations of that technology, provides means to perform gas flow rate calculations, and describes practical aspects that must be observed for a good performance of the valve.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"17 1","pages":"183-203"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82249809","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. N. Lucci, W. Lamas, F. J. Grandinetti, G. Giacaglia
This work presents the use of a finite element model software and suggests its use as a tool to develop metal-to-metal seals with the objective of reducing the number of designs and empirical tests, increasing possibility of success during validation tests, decreasing the number of repetitions of real tests needed, therefore, reducing execution costs. The present work configures a model of seal in a finite element analysis software and simulates different sizes of meshes to evaluate which configuration presented results and computational costs compatible with this work. Then, it develops different models in an interactive way, this is, it performs geometry changes with the intention of optimizing results. At the end of each model, it evaluates the results. This work develops and evaluates six models. At last, the authors selected the model which presented enough contact pressure to perform the sealing. This model presented a compatible stress in accordance with the failure criteria adopted, plastic strain in an acceptable range, and system behavior in accordance with that suggested by Sweeney, Brammer, and Chalmers (2004) in seal extremities.
这项工作介绍了有限元模型软件的使用，并建议将其用作开发金属对金属密封的工具，目的是减少设计和经验测试的数量，增加验证测试期间成功的可能性，减少所需实际测试的重复次数，从而降低执行成本。本研究在有限元分析软件中配置了一个密封模型，并模拟了不同尺寸的网格，以评估哪种配置呈现的结果和计算成本与该工作兼容。然后，它以交互的方式开发不同的模型，即以优化结果为目的进行几何变化。在每个模型结束时，对结果进行评估。这项工作开发和评估了六个模型。最后选择了具有足够接触压力的模型进行密封。该模型给出了符合所采用的破坏准则的相容应力，可接受范围内的塑性应变，以及符合Sweeney, Brammer, and Chalmers(2004)在密封端部提出的系统行为。
{"title":"FINITE ELEMENT ANALYSIS APPLIED TO A METAL-TO-METAL SEAL DESIGN","authors":"B. N. Lucci, W. Lamas, F. J. Grandinetti, G. Giacaglia","doi":"10.5419/bjpg2020-0013","DOIUrl":"https://doi.org/10.5419/bjpg2020-0013","url":null,"abstract":"This work presents the use of a finite element model software and suggests its use as a tool to develop metal-to-metal seals with the objective of reducing the number of designs and empirical tests, increasing possibility of success during validation tests, decreasing the number of repetitions of real tests needed, therefore, reducing execution costs. The present work configures a model of seal in a finite element analysis software and simulates different sizes of meshes to evaluate which configuration presented results and computational costs compatible with this work. Then, it develops different models in an interactive way, this is, it performs geometry changes with the intention of optimizing results. At the end of each model, it evaluates the results. This work develops and evaluates six models. At last, the authors selected the model which presented enough contact pressure to perform the sealing. This model presented a compatible stress in accordance with the failure criteria adopted, plastic strain in an acceptable range, and system behavior in accordance with that suggested by Sweeney, Brammer, and Chalmers (2004) in seal extremities.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"60 1","pages":"157-173"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79178506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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