The Experts below are selected from a list of 87 Experts worldwide ranked by ideXlab platform
Shatilov Denis - One of the best experts on this subject based on the ideXlab platform.
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Design features of offshore facilities for South-Western Kara Sea conditions
University of Stavanger Norway, 2019Co-Authors: Shatilov DenisAbstract:The increasing hydrocarbon deposit depletion degree leads to the necessity to engage new promising territories in field development. In Russia, the depletion of Petroleum fields has exceeded 50% of their potential, while even the maximum field development of explored reserves will not be able to give the required hydrocarbon production level. According to the research estimation (Zolotukhin, 2019), 93% of hydrocarbons accounted for in the Arctic region are concentrated in a dozen of large fields. The percentage of gas in Arctic hydrocarbon reserves reaches 78% while the percentage of oil is 22%. Moreover, two thirds of Petroleum fields are located on Russian territory. The Kara Sea is a part of the Arctic shelf and it has significant hydrocarbon reserves. Pobeda is one of Petroleum Deposits situated on Kara Sea shelf. In the Arctic harsh conditions, careful analysis is required for the effective field development of this field. Eventually, it is necessary to apply robust technologies and concepts for Arctic offshore fields, including the Pobeda field. In frame of the master thesis, technological evaluation (namely, technological readiness and risk evaluation) will be discussed. There are two major areas for evaluation. They are offshore construction and offshore transportation system. The first part emphasizes the proper selection of offshore structure, discussing previous experience of arctic field development and analyzing platform design with software and appropriate calculations. The second part considers the hydrocarbon transportation system paying much attention to pipeline design/installation. Pipeline route, pipeline design and installation method will be discussed in this section. For the issues of pipeline routing, the SIMLA software is used. The final chapter of the master thesis gives a technological evaluation and discusses economic aspects for the Pobeda field development. Risk matrix and analyses are included and future recommendations with conclusions are given. The Master thesis suggests conceptual designs, consequently different assumptions are proposed
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Design features of offshore facilities for South-Western Kara Sea conditions
University of Stavanger Norway, 2019Co-Authors: Shatilov DenisAbstract:Master's thesis in Offshore TechnologyThe increasing hydrocarbon deposit depletion degree leads to the necessity to engage new promising territories in field development. In Russia, the depletion of Petroleum fields has exceeded 50% of their potential, while even the maximum field development of explored reserves will not be able to give the required hydrocarbon production level. According to the research estimation (Zolotukhin, 2019), 93% of hydrocarbons accounted for in the Arctic region are concentrated in a dozen of large fields. The percentage of gas in Arctic hydrocarbon reserves reaches 78% while the percentage of oil is 22%. Moreover, two thirds of Petroleum fields are located on Russian territory. The Kara Sea is a part of the Arctic shelf and it has significant hydrocarbon reserves. Pobeda is one of Petroleum Deposits situated on Kara Sea shelf. In the Arctic harsh conditions, careful analysis is required for the effective field development of this field. Eventually, it is necessary to apply robust technologies and concepts for Arctic offshore fields, including the Pobeda field. In frame of the master thesis, technological evaluation (namely, technological readiness and risk evaluation) will be discussed. There are two major areas for evaluation. They are offshore construction and offshore transportation system. The first part emphasizes the proper selection of offshore structure, discussing previous experience of arctic field development and analyzing platform design with software and appropriate calculations. The second part considers the hydrocarbon transportation system paying much attention to pipeline design/installation. Pipeline route, pipeline design and installation method will be discussed in this section. For the issues of pipeline routing, the SIMLA software is used. The final chapter of the master thesis gives a technological evaluation and discusses economic aspects for the Pobeda field development. Risk matrix and analyses are included and future recommendations with conclusions are given. The Master thesis suggests conceptual designs, consequently different assumptions are proposed
Aditya Gaikwad - One of the best experts on this subject based on the ideXlab platform.
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comparative analysis of performance emission and combustion parameters of diesel engine fuelled with ethyl ester of fish oil and its diesel blends
Fuel, 2014Co-Authors: G Sakthivel, G Nagarajan, M Ilangkumaran, Aditya GaikwadAbstract:The thirst for fuel is steadily increasing as technology continues to open new areas of exploration. At the same time, the indiscriminate extraction of fossil fuels also may result in extinction of Petroleum Deposits in foreseeable future. Along with this, pollutant emission from diesel engines causes major impacts on ecological systems. In order to overcome the above problems associated with the use of Petroleum derived fuels, a suitable source of biodiesel should be used to replace conventional diesel fuel. Hence, in this work, feasibility of using biodiesel prepared from fish oil was investigated. Various properties such as viscosity, density, calorific value, flash point and cetane value of biodiesel and biodiesel–diesel blends of different proportions were investigated. Later, experimental tests were carried out to evaluate the performance, emission and combustion characteristics of a single cylinder, constant speed, direct injection diesel engine using biodiesel–diesel blends, under variable load conditions. It was found that there was a reduction in NOx, HC and CO emission along with a marginal increase of CO2 and smoke emissions with the increase in biodiesel proportion in the fuel. The brake thermal efficiency was found to be higher compared to diesel for the entire load. An analysis of the cylinder pressure rise, heat release, and other combustion parameters such as peak pressure, rate of pressure rise, combustion duration and ignition delay was carried out. The ignition delay, maximum heat release rate and combustion duration were lower for biodiesel–diesel blends compared to diesel. Ultimately, fish oil can indeed become the appropriate source for biodiesel, with environmental benefits.
Xiaohui Gao - One of the best experts on this subject based on the ideXlab platform.
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Development of Petroleum geology in China: Discussion on continuous Petroleum accumulation
Journal of Earth Science, 2013Co-Authors: Caineng Zou, Shizheng Tao, Zhi Yang, Lianhua Hou, Xuanjun Yuan, Rukai Zhu, Jinhua Jia, Yanjie Gong, Xiaohui GaoAbstract:Petroleum exploration targets are extending gradually from the single conventional trap reservoirs to the large-scale unconventional continuous accumulations. Oil and gas reservoirs have been divided into two types based on the trapping mechanism and distribution of oil and gas: conventional single-trap reservoirs, such as the Daqing oil field in Songliao Basin and the Kela-2 gas field in Tarim Basin; and unconventional continuous Petroleum accumulation, such as Upper Paleozoic tight gas and Mesozoic tight oil in Ordos Basin, and Upper Triassic tight gas in Sichuan Basin. Two typical geologic characteristics of continuous Petroleum accumulation involve: (1) coexisting source and reservoir, Petroleum pervasive throughout a large area tight reservoirs, and no obvious traps or well-defined water-oil and gas contracts; (2) non-buoyancy accumulation, continuous Petroleum charge, and no significant influence by buoyancy. Continuous Petroleum accumulation generally have nm-scale pore throats, and the diameters range of 10-500 nm. The geometry and connectivity of these pore throats has significant impact on the migration and distribution of oil and gas in continuous Petroleum accumulation. China has numerous continuous Petroleum accumulation containing various Petroleum Deposits, and the exploration of continuous resources is very promising. Unconventional Petroleum geology will become an important new subject in Petroleum geology in future, and the nano-technology will function greatly on research, exploration and development of the hydrocarbon accumulation in nanopore-throats.
G Sakthivel - One of the best experts on this subject based on the ideXlab platform.
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comparative analysis of performance emission and combustion parameters of diesel engine fuelled with ethyl ester of fish oil and its diesel blends
Fuel, 2014Co-Authors: G Sakthivel, G Nagarajan, M Ilangkumaran, Aditya GaikwadAbstract:The thirst for fuel is steadily increasing as technology continues to open new areas of exploration. At the same time, the indiscriminate extraction of fossil fuels also may result in extinction of Petroleum Deposits in foreseeable future. Along with this, pollutant emission from diesel engines causes major impacts on ecological systems. In order to overcome the above problems associated with the use of Petroleum derived fuels, a suitable source of biodiesel should be used to replace conventional diesel fuel. Hence, in this work, feasibility of using biodiesel prepared from fish oil was investigated. Various properties such as viscosity, density, calorific value, flash point and cetane value of biodiesel and biodiesel–diesel blends of different proportions were investigated. Later, experimental tests were carried out to evaluate the performance, emission and combustion characteristics of a single cylinder, constant speed, direct injection diesel engine using biodiesel–diesel blends, under variable load conditions. It was found that there was a reduction in NOx, HC and CO emission along with a marginal increase of CO2 and smoke emissions with the increase in biodiesel proportion in the fuel. The brake thermal efficiency was found to be higher compared to diesel for the entire load. An analysis of the cylinder pressure rise, heat release, and other combustion parameters such as peak pressure, rate of pressure rise, combustion duration and ignition delay was carried out. The ignition delay, maximum heat release rate and combustion duration were lower for biodiesel–diesel blends compared to diesel. Ultimately, fish oil can indeed become the appropriate source for biodiesel, with environmental benefits.
Henryk Sechman - One of the best experts on this subject based on the ideXlab platform.
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detailed compositional analysis of hydrocarbons in soil gases above multi horizon Petroleum Deposits a case study from western poland
Applied Geochemistry, 2012Co-Authors: Henryk SechmanAbstract:Abstract A surface geochemical survey was carried on in an area with a cluster of Petroleum Deposits in western Poland. The largest of these accumulations is the Paproc-Cicha Gora dry gas deposit reservoired in the Rotliegend sediments. Other, similar gas Deposits are: the Paproc gas field discovered in the top part of the Carboniferous formation and the Paproc W, Paproc N, and Nowy Tomyśl gas fields localized in the Zechstein Limestone reef structures. Moreover, the Paproc gas-condensate and the Jastrzebsko oil Deposits were found at shallower depths, in the Main Dolomite formation. This paper aims to analyze the variability of composition and distribution of near-surface gaseous hydrocarbons in relation to hydrocarbon accumulations reservoired in various stratigraphic units at depths. The occurrence of CH 4 , its heavier homologues and unsaturated hydrocarbons was measured in 267 soil gas samples. The sampling sites were located along six survey lines (A–A, B–B, C–C, D–D, E–E and F–F) at a 200 m spacing. Concentrations of CH 4 , total alkanes (C 2 –C 4 ) and total alkenes (C 2 –C 3 ) reached maxima of 0.26 vol.%, 5.32 ppm and 5.88 ppm, respectively. Soil–gas alkanes heavier than CH 4 were interpreted as being derived from subsurface hydrocarbon accumulations. These compounds penetrated to the near-surface zone by means of active and passive microseepage. Source strength of alkanes microseepage from subsurface accumulations to the land surface (determined by the C 2 H 6 /C 2 H 4 ratio) is not a factor that substantially changes the patterns of surface anomalies. Analysis of the values of CH 4 /C 2 H 6 and C 2 H 6 /C 3 H 8 coefficients confirmed the presence of compositionally diversified, deep hydrocarbon accumulations. The study revealed that even small accumulations of gas condensate produce very strong surface geochemical signatures, contrasting with dry gas Deposits. The reason may be a specific effect of hydrocarbon migration within the existing Petroleum system. The Main Dolomite, which is both the source and the reservoir rock in the Fore-sudetic monocline, plays the role of a “filter”, which modifies the flux of gases ascending from deep-seated reservoirs. As a result of such “filtering”, the geochemical signature of hydrocarbons recorded at the surface indicates the dominance of gas condensate and oil–gas accumulations at depths, giving rise to obviously incorrect interpretations. These interpretations were evidenced by compositional analysis of soil gases, which did not explicitly confirm the existence of a dry gas deposit in the Rotliegend reservoir (Paproc-Cicha Gora gas field). On the other hand, the identified anomalies generally reflect the outline of this accumulation. It supports the applicability of surface geochemical surveys to hydrocarbon exploration in the Fore-sudetic Monocline. The presence of the Main Dolomite at shallower depth must be taken into account in the interpretation of data used for positioning of seismically identified Rotliegend structures. The results of this project indicate that the Main Dolomite may obscure the geochemical signature of near-surface gases derived from dry gas accumulations in both the deeper Rotliegend and Carboniferous reservoirs.