rishi dewan - Academia.edu (original) (raw)
Papers by rishi dewan
Lecture notes in civil engineering, 2022
Journal of Nano-and electronic Physics, 2022
Advance extraction methodology with effective drilling fluid is the compulsory requirement for th... more Advance extraction methodology with effective drilling fluid is the compulsory requirement for the production of oil and gas from unconventional reservoirs. Wellbore instability, corrosion, lubrication, and cutting reduction are a few of the problems existing in traditional drilling fluid systems. Nano-based drilling fluid (n-drilling fluid) is expected to be one of the effective solutions to resolve these issues in the oil and gas sector. In this work, the rheological properties like plastic viscosity (PV), apparent viscosity (AV), yield point (YP), etc. of drilling fluid were measured, analyzed, and compared with TiO2 nanoparticles based nano drilling fluid. The technical and economic benefits of n-drilling fluid over normal fluid were inspected and studied. Relative analysis of shear stress with respect to shear rate was also performed. The optimum concentration of TiO2 nanoparticles is found to be 0.1 w. %/v. % (0.35 g) which improves PV by 10 %, while significant changes are depicted in AV and YP.
Lecture notes in electrical engineering, 2022
Advances in Industrial Safety, 2020
Journal of Nano- and Electronic Physics
Computers, Materials & Continua
Water injection has shown to be one of the most successful, efficient, and cost-effective reservo... more Water injection has shown to be one of the most successful, efficient, and cost-effective reservoir management strategies. By re-injecting treated and filtered water into reservoirs, this approach can help maintain reservoir pressure, increase hydrocarbon output, and reduce the environmental effect. The goal of this project is to create a water injection model utilizing Eclipse reservoir simulation software to better understand water injection methods for reservoir pressure maintenance. A basic reservoir model is utilized in this investigation. For simulation designs, the reservoir length, breadth, and thickness may be changed to different levels. The water-oil contact was discovered at 7000 feet, and the reservoir pressure was recorded at 3000 pounds per square inch at a depth of 6900 feet. The aquifer chosen was of the Fetkovich type and was linked to the reservoir in the j+ direction. The porosity was estimated to be varied, ranging from 9% to 16%. The residual oil saturation was set to 25% and the irreducible water saturation was set at 20%. The vertical permeability was set at 50 md as a constant. Pressure Volume Temperature (PVT) data was used to estimate the gas and water characteristics.
Lecture Notes in Civil Engineering
Particulate Science and Technology, 2014
ABSTRACT In the present study, an attempt has been made to design an oleophobic surface through c... more ABSTRACT In the present study, an attempt has been made to design an oleophobic surface through chemical graft copolymerization of methyl methacrylate (MMA) onto polytetrafluroethylene (PTFE) film. The PTFE films were grafted with MMA resulting in PTFE-g-MMA grafts using benzoyl peroxide (BPO) as initiator in aqueous media. Optimum conditions pertaining to maximum percentage of grafting were evaluated by varying time, temperature, initiator, and monomer concentration. The maximum graft yield 9.47% was obtained at [BPO] = 0.03 M, [MMA] = 10%V/V, [reaction temperature] = 50°C and [reaction time] = 120 min. Methyl iodide was used to measure the contact angle, which revealed the oleophobic nature of grafted PTFE-g-MMA film. Maximum contact angle 95.5° of PTFE-g-MMA film was observed at optimum grafting conditions. The surface morphology of PTFE-g-MMA films was studied by Field emission scanning electron microscopy (FE-SEM) and x-ray diffraction (XRD) analysis confirmed the change in structure of PTFE after MMA grafting.
Journal of Failure Analysis and Prevention
The oil and gas industry is variably classified in upstream sector and downstream sector, with bo... more The oil and gas industry is variably classified in upstream sector and downstream sector, with both sectors having exposure to a good number of hazards. The crude oil extraction process is one of the prime objectives of the upstream sector which includes the exploration of the crude, subsequent drilling operation and maximum recovery of the crude oil and gas from the site of operation. The uncontrolled flow of hydrocarbon in well may lead to blowout and will probably have environmental impact; thus, the extraction process can have a huge impact on the elements of earth, which include the soil (area of exploration and production), water and air. Approximately on global scale, there are forty-thousand crude oil sites and millions of people work or live in nearby vicinity; and workers associated with the job will be largely influenced in regard of their safety and health. On comparison of O & G extraction industry with the construction industry, the fatality rate goes up by 2.5 times (Goldberg and Moye in the first hundred years of the Bureau of Labor Statistics. US Department of Labor, 1985), as exposure to hazards like noise, radiation, H 2 S, crystalline silica is significant. In the article further, we review the safety hazards and health hazards associated with the extraction of the crude along with assessing the probable causes of the fatal incidents and exposure to hazardous substances. Workers involved in crude extraction process have potential impact on their health such as loss of immunity, cancerous cell development, liver and respiratory tract damage and neurological disorders.
As we are in twenty-first century, industries are growing at rapid rate and thus evolution of adv... more As we are in twenty-first century, industries are growing at rapid rate and thus evolution of advanced and more complicated machinery takes place. Basically humans are the ones who need to operate such machinery although some of them are operated remotely, but many demand direct human interaction. Every machine has its own unique hazard such as crushing, shearing, entanglement, cutting and drawing-in which may result in mechanical injuries such as abrasion, laceration, avulsion, and others. In order to prevent such injuries and protect human from such complicated machinery, we need to discover new and advanced protective equipment’s in order to safeguard human life. This paper discusses about such recent trends in protecting humans and advance technique to provide automatic cutoff if anything goes wrong from the design intent. There are various types of guards available such as interlock guard, fixed guard, adjustable guard and use according to the type of machinery. Apart from the guards, there are different types of protective appliances we are having such as presence sensing, pullback, restraint, tripwire cable, two-hand controls and gates. All such protective devices are designed for safeguarding specific types of hazard and can be installed only on particular types of machines. Each type of guards is having its own advantages and limitations, but it shall fulfill the basic requirement of a guard-such as preventing contact between human and hazardous rotating part of machine, firmly secure machine and is difficult to tamper with, it should not create any new hazard, and must not interfere with the operation. The recent sensitive protective equipment such as trip bars, pressure mats and photoelectric devices help improve safety. In hierarchy of control, safeguarding and protective devices come under engineering control. Once the possibility to eliminate or substitution is exhausted, these protective devices are placed to protect human. Machine guarding and other protective equipment’s are placed to remove or eliminate only mechanical hazards associated with the machinery, and they can not eliminate nonmechanical hazard associated with the machine such as electricity, noise, vibration. Accidents/incidents can be prevented once workers have proper knowledge about the machine and the safeguard that is placed to protect them.
Current study aims to identify the factors affecting investment behavior of the corporate and ind... more Current study aims to identify the factors affecting investment behavior of the corporate and individual investors, and also to make a comparative study of the investment behavior of both the corporate and individual investors from Southern India. The study was primarily based on the perception of the investors and the data was collected from 576 investors (304 individual investors and 272 corporate investors) from four major cities of South India namely; Bangalore, Hyderabad, Chennai and Visakhapatnam using questionnaire method. Researcher has identified total four factors which successfully represent the investment behavior of the corporate and individual investors. These factors are mainly; Investors related factors, Market or environment related factor, Investment related factors and Company specific factors. Further, it was found from the comparative analysis of the corporate and individual investors, that there is a significant difference in the investment behavior of the corporate and individual investors from Southern India.
Advances in Sustainable Development
Materials Today: Proceedings
Springer Proceedings in Earth and Environmental Sciences
Lecture notes in civil engineering, 2022
Journal of Nano-and electronic Physics, 2022
Advance extraction methodology with effective drilling fluid is the compulsory requirement for th... more Advance extraction methodology with effective drilling fluid is the compulsory requirement for the production of oil and gas from unconventional reservoirs. Wellbore instability, corrosion, lubrication, and cutting reduction are a few of the problems existing in traditional drilling fluid systems. Nano-based drilling fluid (n-drilling fluid) is expected to be one of the effective solutions to resolve these issues in the oil and gas sector. In this work, the rheological properties like plastic viscosity (PV), apparent viscosity (AV), yield point (YP), etc. of drilling fluid were measured, analyzed, and compared with TiO2 nanoparticles based nano drilling fluid. The technical and economic benefits of n-drilling fluid over normal fluid were inspected and studied. Relative analysis of shear stress with respect to shear rate was also performed. The optimum concentration of TiO2 nanoparticles is found to be 0.1 w. %/v. % (0.35 g) which improves PV by 10 %, while significant changes are depicted in AV and YP.
Lecture notes in electrical engineering, 2022
Advances in Industrial Safety, 2020
Journal of Nano- and Electronic Physics
Computers, Materials & Continua
Water injection has shown to be one of the most successful, efficient, and cost-effective reservo... more Water injection has shown to be one of the most successful, efficient, and cost-effective reservoir management strategies. By re-injecting treated and filtered water into reservoirs, this approach can help maintain reservoir pressure, increase hydrocarbon output, and reduce the environmental effect. The goal of this project is to create a water injection model utilizing Eclipse reservoir simulation software to better understand water injection methods for reservoir pressure maintenance. A basic reservoir model is utilized in this investigation. For simulation designs, the reservoir length, breadth, and thickness may be changed to different levels. The water-oil contact was discovered at 7000 feet, and the reservoir pressure was recorded at 3000 pounds per square inch at a depth of 6900 feet. The aquifer chosen was of the Fetkovich type and was linked to the reservoir in the j+ direction. The porosity was estimated to be varied, ranging from 9% to 16%. The residual oil saturation was set to 25% and the irreducible water saturation was set at 20%. The vertical permeability was set at 50 md as a constant. Pressure Volume Temperature (PVT) data was used to estimate the gas and water characteristics.
Lecture Notes in Civil Engineering
Particulate Science and Technology, 2014
ABSTRACT In the present study, an attempt has been made to design an oleophobic surface through c... more ABSTRACT In the present study, an attempt has been made to design an oleophobic surface through chemical graft copolymerization of methyl methacrylate (MMA) onto polytetrafluroethylene (PTFE) film. The PTFE films were grafted with MMA resulting in PTFE-g-MMA grafts using benzoyl peroxide (BPO) as initiator in aqueous media. Optimum conditions pertaining to maximum percentage of grafting were evaluated by varying time, temperature, initiator, and monomer concentration. The maximum graft yield 9.47% was obtained at [BPO] = 0.03 M, [MMA] = 10%V/V, [reaction temperature] = 50°C and [reaction time] = 120 min. Methyl iodide was used to measure the contact angle, which revealed the oleophobic nature of grafted PTFE-g-MMA film. Maximum contact angle 95.5° of PTFE-g-MMA film was observed at optimum grafting conditions. The surface morphology of PTFE-g-MMA films was studied by Field emission scanning electron microscopy (FE-SEM) and x-ray diffraction (XRD) analysis confirmed the change in structure of PTFE after MMA grafting.
Journal of Failure Analysis and Prevention
The oil and gas industry is variably classified in upstream sector and downstream sector, with bo... more The oil and gas industry is variably classified in upstream sector and downstream sector, with both sectors having exposure to a good number of hazards. The crude oil extraction process is one of the prime objectives of the upstream sector which includes the exploration of the crude, subsequent drilling operation and maximum recovery of the crude oil and gas from the site of operation. The uncontrolled flow of hydrocarbon in well may lead to blowout and will probably have environmental impact; thus, the extraction process can have a huge impact on the elements of earth, which include the soil (area of exploration and production), water and air. Approximately on global scale, there are forty-thousand crude oil sites and millions of people work or live in nearby vicinity; and workers associated with the job will be largely influenced in regard of their safety and health. On comparison of O & G extraction industry with the construction industry, the fatality rate goes up by 2.5 times (Goldberg and Moye in the first hundred years of the Bureau of Labor Statistics. US Department of Labor, 1985), as exposure to hazards like noise, radiation, H 2 S, crystalline silica is significant. In the article further, we review the safety hazards and health hazards associated with the extraction of the crude along with assessing the probable causes of the fatal incidents and exposure to hazardous substances. Workers involved in crude extraction process have potential impact on their health such as loss of immunity, cancerous cell development, liver and respiratory tract damage and neurological disorders.
As we are in twenty-first century, industries are growing at rapid rate and thus evolution of adv... more As we are in twenty-first century, industries are growing at rapid rate and thus evolution of advanced and more complicated machinery takes place. Basically humans are the ones who need to operate such machinery although some of them are operated remotely, but many demand direct human interaction. Every machine has its own unique hazard such as crushing, shearing, entanglement, cutting and drawing-in which may result in mechanical injuries such as abrasion, laceration, avulsion, and others. In order to prevent such injuries and protect human from such complicated machinery, we need to discover new and advanced protective equipment’s in order to safeguard human life. This paper discusses about such recent trends in protecting humans and advance technique to provide automatic cutoff if anything goes wrong from the design intent. There are various types of guards available such as interlock guard, fixed guard, adjustable guard and use according to the type of machinery. Apart from the guards, there are different types of protective appliances we are having such as presence sensing, pullback, restraint, tripwire cable, two-hand controls and gates. All such protective devices are designed for safeguarding specific types of hazard and can be installed only on particular types of machines. Each type of guards is having its own advantages and limitations, but it shall fulfill the basic requirement of a guard-such as preventing contact between human and hazardous rotating part of machine, firmly secure machine and is difficult to tamper with, it should not create any new hazard, and must not interfere with the operation. The recent sensitive protective equipment such as trip bars, pressure mats and photoelectric devices help improve safety. In hierarchy of control, safeguarding and protective devices come under engineering control. Once the possibility to eliminate or substitution is exhausted, these protective devices are placed to protect human. Machine guarding and other protective equipment’s are placed to remove or eliminate only mechanical hazards associated with the machinery, and they can not eliminate nonmechanical hazard associated with the machine such as electricity, noise, vibration. Accidents/incidents can be prevented once workers have proper knowledge about the machine and the safeguard that is placed to protect them.
Current study aims to identify the factors affecting investment behavior of the corporate and ind... more Current study aims to identify the factors affecting investment behavior of the corporate and individual investors, and also to make a comparative study of the investment behavior of both the corporate and individual investors from Southern India. The study was primarily based on the perception of the investors and the data was collected from 576 investors (304 individual investors and 272 corporate investors) from four major cities of South India namely; Bangalore, Hyderabad, Chennai and Visakhapatnam using questionnaire method. Researcher has identified total four factors which successfully represent the investment behavior of the corporate and individual investors. These factors are mainly; Investors related factors, Market or environment related factor, Investment related factors and Company specific factors. Further, it was found from the comparative analysis of the corporate and individual investors, that there is a significant difference in the investment behavior of the corporate and individual investors from Southern India.
Advances in Sustainable Development
Materials Today: Proceedings
Springer Proceedings in Earth and Environmental Sciences