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<p>This paper expands the theoretical research on modeling devices designed to respond to deep-water oil spills, which may occur during deep-water oil field development or the transportation of oil through subsea pipelines. Research into innovative methods for responding to deep-water oil spills is particularly important given the increasing volume of offshore oil production and the ineffectiveness of leak response methods more commonly used for spills occurring on the surface of water bodies. The oil spills in the Gulf of Mexico and the North Sea confirm the relevance of the research. The paper describes in detail the installation of a containment dome, its characteristics, and the stages of its operation. Generally, spills occur at great depths in conditions of stable existence of gas hydrates, the accumulation of which inside the dome can cause problems during installation and operation. To prevent the possible accumulation of hydrate particles inside the containment dome, the dome is filled with a water-immiscible liquid (WIL). The first part of our study considers three initial stages of the operation of the containment dome: the migration of oil droplets inside the dome, the accumulation of an oil layer in the dome, and the downward movement of the dome to accumulate the next hydrocarbon layer. To model the hydrocarbon accumulation, the main system of equations is written, computational experiments are carried out, and dependences characterizing the thermophysical picture of hydrocarbon accumulation inside the dome are obtained. The main system of equations includes conservation equations, as well as auxiliary equations that allow calculating the Reynolds and Nusselt numbers, the heat fluxes, and the coordinate of the layer interface. At the first stage, the migration of oil droplets that penetrate the dome through the open lower base is considered. Droplets entering the dome migrate in the WIL layer and then, reaching the upper surface of the dome, begin to form an oil layer. To estimate the temperature of the accumulated oil layer, the interaction with the WIL layer is evaluated by calculating the heat flux.</p>

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Stages of Accumulation of Oil Droplets and Gas Bubbles in a Containment Dome during Deep-Water Oil Spills: Part 1

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • S. R. Kildibaeva,
  • M. V. Stolpovskii

摘要

This paper expands the theoretical research on modeling devices designed to respond to deep-water oil spills, which may occur during deep-water oil field development or the transportation of oil through subsea pipelines. Research into innovative methods for responding to deep-water oil spills is particularly important given the increasing volume of offshore oil production and the ineffectiveness of leak response methods more commonly used for spills occurring on the surface of water bodies. The oil spills in the Gulf of Mexico and the North Sea confirm the relevance of the research. The paper describes in detail the installation of a containment dome, its characteristics, and the stages of its operation. Generally, spills occur at great depths in conditions of stable existence of gas hydrates, the accumulation of which inside the dome can cause problems during installation and operation. To prevent the possible accumulation of hydrate particles inside the containment dome, the dome is filled with a water-immiscible liquid (WIL). The first part of our study considers three initial stages of the operation of the containment dome: the migration of oil droplets inside the dome, the accumulation of an oil layer in the dome, and the downward movement of the dome to accumulate the next hydrocarbon layer. To model the hydrocarbon accumulation, the main system of equations is written, computational experiments are carried out, and dependences characterizing the thermophysical picture of hydrocarbon accumulation inside the dome are obtained. The main system of equations includes conservation equations, as well as auxiliary equations that allow calculating the Reynolds and Nusselt numbers, the heat fluxes, and the coordinate of the layer interface. At the first stage, the migration of oil droplets that penetrate the dome through the open lower base is considered. Droplets entering the dome migrate in the WIL layer and then, reaching the upper surface of the dome, begin to form an oil layer. To estimate the temperature of the accumulated oil layer, the interaction with the WIL layer is evaluated by calculating the heat flux.