A. Carvalho, D. Galindo, M. S. C. Tenório, J. G. O. Marinho
The fluids produced and transported to the surface by the production manifolds do not have the necessary conditions to be economically viable. Produced fluids consist of at least three fluid phases (oil, water, and gas), besides impurities and contaminants. Therefore, the well stream should be processed as soon as possible after bringing it to the surface. Separator vessels are among the main equipment used at surface production facilities, being responsible for the separation of the produced phases. This work focuses in studying the fluid dynamic behavior in a horizontal three-phase separator. For this, we used the computational fluid dynamics software ANSYS CFX. First, a detailed analysis of a “Standard Case” was performed to better understand the entire separation process within the vessel. The results showed the three phases through simulation time, an analysis of the separation efficiency, an analysis of the different fluids flow lines, an analysis of the pressure gradient inside the vessel, and an analysis of the effect of the diverter baffle, as well as, a variation of fluid flow at the inlet of the separator.
{"title":"MODELING AND SIMULATION OF A HORIZONTAL THREE-PHASE SEPARATOR: INFLUENCE OF INLET FLOW","authors":"A. Carvalho, D. Galindo, M. S. C. Tenório, J. G. O. Marinho","doi":"10.5419/bjpg2020-0012","DOIUrl":"https://doi.org/10.5419/bjpg2020-0012","url":null,"abstract":"The fluids produced and transported to the surface by the production manifolds do not have the necessary conditions to be economically viable. Produced fluids consist of at least three fluid phases (oil, water, and gas), besides impurities and contaminants. Therefore, the well stream should be processed as soon as possible after bringing it to the surface. Separator vessels are among the main equipment used at surface production facilities, being responsible for the separation of the produced phases. This work focuses in studying the fluid dynamic behavior in a horizontal three-phase separator. For this, we used the computational fluid dynamics software ANSYS CFX. First, a detailed analysis of a “Standard Case” was performed to better understand the entire separation process within the vessel. The results showed the three phases through simulation time, an analysis of the separation efficiency, an analysis of the different fluids flow lines, an analysis of the pressure gradient inside the vessel, and an analysis of the effect of the diverter baffle, as well as, a variation of fluid flow at the inlet of the separator.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"7 1","pages":"137-155"},"PeriodicalIF":0.0,"publicationDate":"2020-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80912817","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}
Petroleum is one of the top commodities in the world, which produces some of the most environmentally hazardous wastes, such as produced water. Thus, research on technologies capable of processing wastewater are important for promoting the treatment of this waste and reducing costs in the segment. Among the processes used to treat wastewater, flotation is one of the leading methods used in physical separation operations. The efficiency of this technique has a high influence on internal hydrodynamic flows. This paper proposes a mathematical modeling to fluid dynamics of oil-water separation in an airlift flotation column based on momentum and continuity balance equations. To simplify the modeling used, we considered only the drag force as the most relevant interfacial force in this phenomenon. The software Ansys CFX 13.0 was used to evaluate the data. Three columns were created, and all data were submitted to a simulated effluent, containing 1000 ppm of oil. By evaluating efficiency selection in three columns and observing the countercurrent design, we found 84.72% as the best result achieved. This result can be associated with a column model that allows better phase contact as an ideal turbulence in the recirculation zone. Despite the simplifications in the proposed model, it is possible to observe a good association between the results obtained in the simulations and the ones presented in the literature.
{"title":"MATHEMATICAL MODELING OF AN AIRLIFT FLOTATION COLUMN WITH DIFFERENT GEOMETRIES FOR WATER AND OIL SEPARATION","authors":"D. Barros, J. G. O. Marinho, J. Soletti","doi":"10.5419/bjpg2020-0006","DOIUrl":"https://doi.org/10.5419/bjpg2020-0006","url":null,"abstract":"Petroleum is one of the top commodities in the world, which produces some of the most environmentally hazardous wastes, such as produced water. Thus, research on technologies capable of processing wastewater are important for promoting the treatment of this waste and reducing costs in the segment. Among the processes used to treat wastewater, flotation is one of the leading methods used in physical separation operations. The efficiency of this technique has a high influence on internal hydrodynamic flows. This paper proposes a mathematical modeling to fluid dynamics of oil-water separation in an airlift flotation column based on momentum and continuity balance equations. To simplify the modeling used, we considered only the drag force as the most relevant interfacial force in this phenomenon. The software Ansys CFX 13.0 was used to evaluate the data. Three columns were created, and all data were submitted to a simulated effluent, containing 1000 ppm of oil. By evaluating efficiency selection in three columns and observing the countercurrent design, we found 84.72% as the best result achieved. This result can be associated with a column model that allows better phase contact as an ideal turbulence in the recirculation zone. Despite the simplifications in the proposed model, it is possible to observe a good association between the results obtained in the simulations and the ones presented in the literature.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"20 1","pages":"055-064"},"PeriodicalIF":0.0,"publicationDate":"2020-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82406789","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}
Typically, hydrocarbon reservoirs have heterogeneities that influence pressure variation in producing wells. In the case of natural fractures, the layer model has been widely applied to obtain analytical and numerical solutions. In this model, we superimpose the porous media layers representing the porous matrix and fractures. In this work, the layer model is used in the numerical simulation, using cylindrical geometry and finite differences, to determine the pressure in natural gas producing wells. We consider shale gas reservoirs, and obtain the numerical results investigating the effects resulting from the presence of fractures and non-Darcy flow due to slip and adsorption phenomena. This work studies grid refinement and performs numerical verification, as well as a sensitivity analysis varying the main physical parameters that directly influence the reservoir and well pressures, such as permeability, porosity, and thickness of the fracture, reservoir temperature, and the Langmuir pressure and volume. As expected, from specialized and diagnostic plots, we can visualize how fractures favor the flow while capturing typical flow regimes of fractured reservoirs described in the literature.
{"title":"NUMERICAL SIMULATION OF NATURALLY FRACTURED SHALE GAS RESERVOIRS APPLYING THE LAYER MODEL","authors":"J. Junior, R. Queiroz, G. Souza, H. P. A. Souto","doi":"10.5419/bjpg2020-0010","DOIUrl":"https://doi.org/10.5419/bjpg2020-0010","url":null,"abstract":"Typically, hydrocarbon reservoirs have heterogeneities that influence pressure variation in producing wells. In the case of natural fractures, the layer model has been widely applied to obtain analytical and numerical solutions. In this model, we superimpose the porous media layers representing the porous matrix and fractures. In this work, the layer model is used in the numerical simulation, using cylindrical geometry and finite differences, to determine the pressure in natural gas producing wells. We consider shale gas reservoirs, and obtain the numerical results investigating the effects resulting from the presence of fractures and non-Darcy flow due to slip and adsorption phenomena. This work studies grid refinement and performs numerical verification, as well as a sensitivity analysis varying the main physical parameters that directly influence the reservoir and well pressures, such as permeability, porosity, and thickness of the fracture, reservoir temperature, and the Langmuir pressure and volume. As expected, from specialized and diagnostic plots, we can visualize how fractures favor the flow while capturing typical flow regimes of fractured reservoirs described in the literature.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83761384","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}
Commercial lipase Novozym 435 was used to catalyse the transesterification of a mixture of waste cooking oil and soybean oil with methanol. A central composite experimental design was performed to analyze the effects of lipase dosage, waste cooking oil content in the mixture, and reaction time on the methyl ester yield. Lipase dosage and waste cooking oil content were the most significant variables after statistical analysis. The highest yield, 98.04%, was obtained using 12.5% of lipase, a mixture containing 50% of waste cooking oil after 10 h of reaction. The lipase was reutilized and showed a good operational stability since the yield was reduced by 6% even after five batches. Two kinetic models, Power Law and Eley-Rideal, were used to model the production process and correlate the experimental results.
{"title":"EVALUATION OF THE KINETICS OF A LIPASE CATALYSED BIODIESEL PRODUCTION FROM A MIXTURE OF WASTE COOKING OIL AND SOYBEAN OIL","authors":"C. Neves, A. Brígida, L. Lucchetti, M. Mendes","doi":"10.5419/bjpg2020-0007","DOIUrl":"https://doi.org/10.5419/bjpg2020-0007","url":null,"abstract":"Commercial lipase Novozym 435 was used to catalyse the transesterification of a mixture of waste cooking oil and soybean oil with methanol. A central composite experimental design was performed to analyze the effects of lipase dosage, waste cooking oil content in the mixture, and reaction time on the methyl ester yield. Lipase dosage and waste cooking oil content were the most significant variables after statistical analysis. The highest yield, 98.04%, was obtained using 12.5% of lipase, a mixture containing 50% of waste cooking oil after 10 h of reaction. The lipase was reutilized and showed a good operational stability since the yield was reduced by 6% even after five batches. Two kinetic models, Power Law and Eley-Rideal, were used to model the production process and correlate the experimental results.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"19 1","pages":"065-078"},"PeriodicalIF":0.0,"publicationDate":"2020-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81267442","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. D. A. Albuquerque, M. C. Souza, J. G. O. Marinho, L. M. T. D. Oliveira
Among the equipments used in the separation of water from oil, bed coalescers stands out. Even after decades of bed coalescer development, the role of some variables, such as apparatus inclination, in its behavior remains underexplored within the field. Thus, using the ANSYS CFX 13.0 software, a modeling was proposed to determine the influence of bed coalescer inclination in the separation rate of oil from produced water. The software analyzes four inclinations relative to the horizontal axis (0°, 15°, 30° and 60°). The results from simulations identified oil accumulating zones and presence of recirculation zones. It also compared the pressure drop throughout the apparatus in all inclinations established, noting that a more favorable state occurs when the bed is at horizontal, presenting higher oil accumulation, fewer vorticity, and lower pressure drop. The less desirable scenario occurs with 60° inclination, displaying a lower separation efficiency, greater pressure drop, and higher turbulence effect.
{"title":"ANALYSIS OF THE INCLINATION INFLUENCE IN A COALESCER COLUMN FOR OIL/WATER TREATMENT VIA COMPUTATIONAL FLUID DYNAMICS","authors":"R. D. A. Albuquerque, M. C. Souza, J. G. O. Marinho, L. M. T. D. Oliveira","doi":"10.5419/bjpg2020-0003","DOIUrl":"https://doi.org/10.5419/bjpg2020-0003","url":null,"abstract":"Among the equipments used in the separation of water from oil, bed coalescers stands out. Even after decades of bed coalescer development, the role of some variables, such as apparatus inclination, in its behavior remains underexplored within the field. Thus, using the ANSYS CFX 13.0 software, a modeling was proposed to determine the influence of bed coalescer inclination in the separation rate of oil from produced water. The software analyzes four inclinations relative to the horizontal axis (0°, 15°, 30° and 60°). The results from simulations identified oil accumulating zones and presence of recirculation zones. It also compared the pressure drop throughout the apparatus in all inclinations established, noting that a more favorable state occurs when the bed is at horizontal, presenting higher oil accumulation, fewer vorticity, and lower pressure drop. The less desirable scenario occurs with 60° inclination, displaying a lower separation efficiency, greater pressure drop, and higher turbulence effect.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90849757","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 aim of this work is to produce a cobalt/ruthenium catalyst supported in SBA-15, for Fischer-Tropsch synthesis (FTS). The synthesis was carried out in a slurry reactor operating at 513 K, 20 atm, and CO:H2 molar ratio of 1:1. The addition of cobalt in SBA-15 decreased the specific superficial area of the molecular sieve. The ranges of temperature reduction typical of iron oxides phases were found using RTP results. Fischer-Tropsch synthesis activity and C5+ hydrocarbon selectivity increased with the addition of Ru. The increase in activity and selectivity were attributed to the increased number of active sites as a result of the higher reducibility.
{"title":"THE USE OF COBALT/RUTHENIUM CATALYST SUPPORTED IN SBA-15 IN THE PROMOTION OF FISCHER-TROPSCH SYNTHESIS","authors":"J. J. Rodrigues, F. Fernandes, M. Rodrigues","doi":"10.5419/bjpg2020-0002","DOIUrl":"https://doi.org/10.5419/bjpg2020-0002","url":null,"abstract":"The aim of this work is to produce a cobalt/ruthenium catalyst supported in SBA-15, for Fischer-Tropsch synthesis (FTS). The synthesis was carried out in a slurry reactor operating at 513 K, 20 atm, and CO:H2 molar ratio of 1:1. The addition of cobalt in SBA-15 decreased the specific superficial area of the molecular sieve. The ranges of temperature reduction typical of iron oxides phases were found using RTP results. Fischer-Tropsch synthesis activity and C5+ hydrocarbon selectivity increased with the addition of Ru. The increase in activity and selectivity were attributed to the increased number of active sites as a result of the higher reducibility.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"42 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73400189","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}
Liquefied petroleum gas (LPG) is industrially stored in spherical or cylindrical vessels. These follow strict construction standards to prevent accidents that may be caused by fire or explosions in neighboring equipment. The heat transfer by thermal radiation is LPG’s main fire propagator. However, even with standards in place, design and operational failures can still occur. In this context, the installation of firefighting systems to avert major disasters becomes critical. The design of these systems must follow national and international standards and codes, which indicate prescriptive criteria for the selection of equipment to be cooled in case of fire in a LPG storage park. The present paper presents a case study for a LPG spherical vessel storage park. It uses the ALOHA simulator to calculate the action radius of thermal radiation and subsequent selection of spheres to be cooled. It also compares standards adopted in Brazil to international standards, demonstrating that Brazilian standards are more conservative and obsolete in regards to the advances in Fire Engineering. The work has the potential to be used as the basis for reviewing Brazilian’s standards.
{"title":"CALCULATION OF THERMAL RADIATION FOR THE DESIGN OF PROTECTION AND FIRE FIGHTING SYSTEMS FOR LPG STORAGE PARKS","authors":"R. M. S. T. Martins, R. F. Vianna","doi":"10.5419/bjpg2020-0004","DOIUrl":"https://doi.org/10.5419/bjpg2020-0004","url":null,"abstract":"Liquefied petroleum gas (LPG) is industrially stored in spherical or cylindrical vessels. These follow strict construction standards to prevent accidents that may be caused by fire or explosions in neighboring equipment. The heat transfer by thermal radiation is LPG’s main fire propagator. However, even with standards in place, design and operational failures can still occur. In this context, the installation of firefighting systems to avert major disasters becomes critical. The design of these systems must follow national and international standards and codes, which indicate prescriptive criteria for the selection of equipment to be cooled in case of fire in a LPG storage park. The present paper presents a case study for a LPG spherical vessel storage park. It uses the ALOHA simulator to calculate the action radius of thermal radiation and subsequent selection of spheres to be cooled. It also compares standards adopted in Brazil to international standards, demonstrating that Brazilian standards are more conservative and obsolete in regards to the advances in Fire Engineering. The work has the potential to be used as the basis for reviewing Brazilian’s standards.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"73 1","pages":"033-044"},"PeriodicalIF":0.0,"publicationDate":"2020-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86969232","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}
X-ray computed tomography, CT-scan, is a very important tool in special core analysis, because it allows the visualization of the interior of cores, providing information such as porosity, saturations, and changes on these parameters with time. CT-scan images are usually square, and contain information not only the core, but also parts of the core-holder, the water used to pressurize the system, and the rubbers that hold the cores in place. Software available to process these images are usually very expensive, or do not allow reasonable automation of the process of treating images. This paper proposes a simplified methodology to isolate the core in a CT image, allowing the processing of multiple images without the interference of the user. This methodology can be implemented easily in any computer language, it saves operation time, and reduces the risk of human error.
{"title":"AUTOMATED METHODOLOGY FOR DETECTING BORDER IN CT-SCAN IMAGES OF NON-CIRCULAR ROCK SAMPLES","authors":"L. F. Lamas, E. Ruidiaz, A. Vidal","doi":"10.5419/bjpg2019-0023","DOIUrl":"https://doi.org/10.5419/bjpg2019-0023","url":null,"abstract":"X-ray computed tomography, CT-scan, is a very important tool in special core analysis, because it allows the visualization of the interior of cores, providing information such as porosity, saturations, and changes on these parameters with time. CT-scan images are usually square, and contain information not only the core, but also parts of the core-holder, the water used to pressurize the system, and the rubbers that hold the cores in place. Software available to process these images are usually very expensive, or do not allow reasonable automation of the process of treating images. This paper proposes a simplified methodology to isolate the core in a CT image, allowing the processing of multiple images without the interference of the user. This methodology can be implemented easily in any computer language, it saves operation time, and reduces the risk of human error.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"89 1","pages":"275-281"},"PeriodicalIF":0.0,"publicationDate":"2019-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83457663","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}
Ricardo Vasconcellos Soares, H. Formentin, C. Maschio, D. Schiozer
Parameterization is a crucial step during uncertainty reduction of reservoir properties using dynamic data. It establishes the search space based on prior knowledge of the model and can have a significant influence on the final response. A less-appropriate parameterization might fail to have a reasonable representation of the reservoir and lead to models unable to predict the correct reservoir characteristics. Parameterization of petrophysical images (as facies, porosities, and permeabilities) plays an essential role during data assimilation processes due to the strong influence in fluid flow in the porous media. This work shows how important the parameterization of petrophysical images is and how a less-appropriate parameterization can affect history-matching and uncertainty reduction process. Using a benchmark case, we compare two parameterization techniques, one capable of treating all blocks in the model (distance-dependent covariance localization), which is considered more appropriate, and one that considers a group of blocks under the same update rule (zonation) (less-appropriate). Results show that parameterization of petrophysical images has a high impact on the final response, and a less-appropriate parameterization, as the zonation, can generate higher data mismatches and fail to represent the real reservoir response. The analysis carried in this work quantifies and qualifies the impact of the parameterization of the petrophysical images in the data assimilation for the uncertainty reduction process.
{"title":"EVALUATING THE IMPACT OF PETROPHYSICAL IMAGES PARAMETERIZATION IN DATA ASSIMILATION FOR UNCERTAINTY REDUCTION","authors":"Ricardo Vasconcellos Soares, H. Formentin, C. Maschio, D. Schiozer","doi":"10.5419/bjpg2019-0021","DOIUrl":"https://doi.org/10.5419/bjpg2019-0021","url":null,"abstract":"Parameterization is a crucial step during uncertainty reduction of reservoir properties using dynamic data. It establishes the search space based on prior knowledge of the model and can have a significant influence on the final response. A less-appropriate parameterization might fail to have a reasonable representation of the reservoir and lead to models unable to predict the correct reservoir characteristics. Parameterization of petrophysical images (as facies, porosities, and permeabilities) plays an essential role during data assimilation processes due to the strong influence in fluid flow in the porous media. This work shows how important the parameterization of petrophysical images is and how a less-appropriate parameterization can affect history-matching and uncertainty reduction process. Using a benchmark case, we compare two parameterization techniques, one capable of treating all blocks in the model (distance-dependent covariance localization), which is considered more appropriate, and one that considers a group of blocks under the same update rule (zonation) (less-appropriate). Results show that parameterization of petrophysical images has a high impact on the final response, and a less-appropriate parameterization, as the zonation, can generate higher data mismatches and fail to represent the real reservoir response. The analysis carried in this work quantifies and qualifies the impact of the parameterization of the petrophysical images in the data assimilation for the uncertainty reduction process.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"130 1","pages":"249-263"},"PeriodicalIF":0.0,"publicationDate":"2019-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74614568","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}
Thermal recovery methods are used typically to produce heavy oil and bitumen. During this process, the temperature is raised to reduce oil viscosity. Conventional thermal methods may not be effective on deep wells or thin zones. An alternative to the thermal process is electromagnetic heating, which is a process based on the transformation of electric energy into thermal energy due to the electromagnetic field and electrically sensitive particles interacting on the medium. In this paper, reservoir simulations with similar characteristics to those found in the sedimentary basins of the Brazilian Northeast were performed. The purpose of this work is to analyze the impact of the number of fractures, fracture configurations and number of producer wells during electromagnetic heating over the oil recovery factor (ORF) value. The results revealed an oil production increment with increasing number of producer wells and when fractures are located at the center of the oil production zone. However, oil production did not show an evident increase connected to the number fractures.
{"title":"IMPACT OF NUMBER OF FRACTURES ON OIL RECOVERY DURING ELECTROMAGNETIC HEATING","authors":"C. P. Ruiz, J. M. Tarifa","doi":"10.5419/bjpg2019-0020","DOIUrl":"https://doi.org/10.5419/bjpg2019-0020","url":null,"abstract":"Thermal recovery methods are used typically to produce heavy oil and bitumen. During this process, the temperature is raised to reduce oil viscosity. Conventional thermal methods may not be effective on deep wells or thin zones. An alternative to the thermal process is electromagnetic heating, which is a process based on the transformation of electric energy into thermal energy due to the electromagnetic field and electrically sensitive particles interacting on the medium. In this paper, reservoir simulations with similar characteristics to those found in the sedimentary basins of the Brazilian Northeast were performed. The purpose of this work is to analyze the impact of the number of fractures, fracture configurations and number of producer wells during electromagnetic heating over the oil recovery factor (ORF) value. The results revealed an oil production increment with increasing number of producer wells and when fractures are located at the center of the oil production zone. However, oil production did not show an evident increase connected to the number fractures.","PeriodicalId":9312,"journal":{"name":"Brazilian Journal of Petroleum and Gas","volume":"17 1","pages":"241-247"},"PeriodicalIF":0.0,"publicationDate":"2019-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83446425","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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