Studies in Social Science
Alireza Bozorgian
Abstract
The high capacity of gas hydrate in natural gas storage makes it attractive to use it for storage and transportation of natural gas and other gases as a competitor to liquefaction and condensation methods. Since the 1960s, when gas hydrate was introduced as a disturbing factor in gas pipelines, the idea ...
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The high capacity of gas hydrate in natural gas storage makes it attractive to use it for storage and transportation of natural gas and other gases as a competitor to liquefaction and condensation methods. Since the 1960s, when gas hydrate was introduced as a disturbing factor in gas pipelines, the idea of natural gas transfer by hydrate has been on the minds of many scientists. Because the hydrate transport temperature is higher than the liquefied natural gas (LNG) transport temperature, gaseous hydrate can be easily transported; Therefore, the technology of building hydraulic vessels will be much less complex than that of LNG vessels, and hydrogen production facilities can be designed much easier than LNG facilities. But the main problem is the smaller volume of gas transferred. According to studies in this field, each cubic meter of hydrate contains 175 cubic meters of gas. However, in LNG technology, the volume reduction reaches one hundred percent, and this issue is very important in the economics of gas transmission projects, especially long distances. Nevertheless, there is still great hope that hydrate will be used as a completely economical solution for gas transmission. In this regard, British Petroleum, in collaboration with other scientific centers such as the University of Gwasen, is building a small industrial unit that can produce 100 kg of hydrate per day.
Studies in Social Science
Masoud Bagherisadr; Alireza Bozorgian
Abstract
In general, a gas hydrate is a combination of gas and water. For example, a group of mineral compounds are called solid hydrates. These are ionic solids that ions are surrounded by water molecules and make crystalline solids. In any case, in the gas industry, hydrates are a combination of a small molecule ...
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In general, a gas hydrate is a combination of gas and water. For example, a group of mineral compounds are called solid hydrates. These are ionic solids that ions are surrounded by water molecules and make crystalline solids. In any case, in the gas industry, hydrates are a combination of a small molecule of gas and water. During the nineteenth century, hydrates remained an unknown and controversial topic. Early efforts were focused on understanding what compounds make up hydrates and under what conditions they form. During this period, many the constituents of hydrates were discovered. But it was not until the twentieth century that the industrial importance of gaseous hydrates proved. In the oil industry, the term gas hydrate refers to compounds that are usually gaseous at room temperature. These include methane, ethane, carbon dioxide, hydrogen sulfide, etc., and this leads to the term hydrogen and at the same time one of the most common misconceptions about these compounds. Obstruction does not cause much of a problem during normal pipeline operation. However, our unforeseen problems such as pump failure or obstruction problems in the transmission cause hydration and thus blockage of pipelines. It takes several weeks to remove these contractions. The purpose of this work is to investigate the phenomenon of hydrate decomposition in pipelines. A model has been discovered that is similar to the decomposition of hydrates in pipelines. The purpose of this work is to develop an optimal strategy for dehydration in pipelines with bilateral contraction.
Studies in Social Science
Alireza Bozorgian
Abstract
Production rates from oil fields decrease over time due to various factors, so it is necessary to use methods that to some extent compensate for the reduction in oil and gas production rates. Gas overflow is one of the artificial overflow methods that is used with the aim of rehabilitating and increasing ...
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Production rates from oil fields decrease over time due to various factors, so it is necessary to use methods that to some extent compensate for the reduction in oil and gas production rates. Gas overflow is one of the artificial overflow methods that is used with the aim of rehabilitating and increasing the optimal flow of oil wells. In this method, high pressure gas is injected at a certain point inside the fluid column in the well, thereby reducing the average density and subsequent pressure on the bottom of the well, and thus reactivating the well. In optimizing the operation, increasing the production and benefiting from the maximum operation of the well and its facilities are considered. In this project, two-phase current was model using a mechanistic model and parameters such as pressure profile, temperature, phase fractions and phase velocities are calculated. Then, with the help of node analysis, the natural production of the well is simulated and the need to use the method is investigated. When the reservoir energy (reservoir pressure) is not high enough for continuous production from the well, the artificial overflow method is used in oil production. Gas overflow method is one of the artificial overflow methods that is used to increase oil production from wells. In this method, high pressure gas is injected into the well to make the fluid column lighter and increase the reservoir pressure to produce oil.
Studies in Social Science
Alireza Bozorgian
Abstract
Considering the advantages and disadvantages of hydrate formation, which were mentioned in the previous section, hydrate has always been considered as a problem that should be avoided, and has been considered as an opportunity for revolution in various industries. Solutions have always been proposed ...
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Considering the advantages and disadvantages of hydrate formation, which were mentioned in the previous section, hydrate has always been considered as a problem that should be avoided, and has been considered as an opportunity for revolution in various industries. Solutions have always been proposed to prevent its occurrence and also to improve the conditions of its formation. Among the various solutions, the use of additives may be the most appropriate method. In this article, first, the types of additives and how they affect the formation of hydrates, then the results of some recent research in this field are mentioned. The effect of additives on hydrate formation. In general, additives used in the hydrate formation process are divided into two categories: inhibitors and improvers. Injection of chemical inhibitors is a priority over other solutions used to prevent hydrate formation and is widely used in the gas industry. Factors influencing the choice of inhibitors include: cost, degree of poisoning, degree of corrosion, environmental aspects, bulk density, etc.
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