Three-phase gas-oil-water flow in undulating pipeline

Ersoy, Gizem; Sarica, Cem; Al-Safran, Eissa; Zhang, H.-Q.

doi:10.1016/j.petrol.2017.06.027

Cited by 14 publications

(5 citation statements)

References 7 publications

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“…73−75 The various systematic studies on pipeline blockage monitoring and detection technology, including the basic research on the propagation characteristics of pressure waves in subsea pipelines, has also been conducted. 76 Additionally, using the harmonics of pressure oscillations produced by the sinusoidal opening and closing of a downstream valve, the transfer matrix approach has been utilized to detect partial blockages in liquid pipelines. 77 On the basis of the pressure pulse wave, a pipeline blockage detecting system was developed that has been suitable to various blockage types.…”

Section: ■ Hydrate Blockage Online Monitoring and Detection Technologiesmentioning

confidence: 99%

“…Compared to the acoustic method, the pressure wave-based method has higher tolerance to background noise and longer propagation distance with less attenuation, which make it more suitable for remote monitoring. − Figure a and b illustrates the effect of different pipeline anomalies on the transient pressure wave signal. The determination of pressure wave transmission characteristics in multiphase flows and the development of relevant prediction models enable the application of pressure wave detection techniques to detect the multiphase flows in pipelines as well as the blockage and leak. − The various systematic studies on pipeline blockage monitoring and detection technology, including the basic research on the propagation characteristics of pressure waves in subsea pipelines, has also been conducted . Additionally, using the harmonics of pressure oscillations produced by the sinusoidal opening and closing of a downstream valve, the transfer matrix approach has been utilized to detect partial blockages in liquid pipelines .…”

Section: Hydrate Blockage Online Monitoring and Detection Technologiesmentioning

confidence: 99%

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Flow Assurance of Hydrate Risk in Natural Gas/Oil Transportation: State-of-the-Art and Future Challenges

et al. 2023

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Deepwater oil and gas development is extremely difficult and challenging. One of the most critical challenges stems from hydrate deposition, aggregation, and the eventual blocking of the deepwater oil and gas transportation system. The low-temperature and high-pressure environment in the deepwater oil and gas field causes the combination of gas molecules and water molecules to form hydrate, thus affects the hydrocarbon transportation. In this Perspective, to discuss the commonly faced safety issues for deepwater oil, gas, and gas hydrate development, the following three critical problems are comprehensively summarized and analyzed. First, the mechanisms of phase transition, aggregation, and blockage of the hydrate in the multiphase transport system have been investigated from the microscopic perspective to macroscopic characteristics. Second, based on different theoretical models, the algorithms are discussed to introduce an online monitoring technique for hydrate blockage, which can detect the safety risks and provide early warnings. Furthermore, for hydrate blockage prevention and control, the active methods based on chemical injection and the passive methods based on the modification of physicochemical properties of pipeline surfaces are reviewed. Finally, an outlook is provided for the future development of deepwater oil and gas and for the schemes to mitigate hydrate blockage.

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Section: ■ Hydrate Blockage Online Monitoring and Detection Technologiesmentioning

confidence: 99%

Section: Hydrate Blockage Online Monitoring and Detection Technologiesmentioning

confidence: 99%

Flow Assurance of Hydrate Risk in Natural Gas/Oil Transportation: State-of-the-Art and Future Challenges

et al. 2023

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“…It can also be observed through experiments [19,20], numerical simulation [21,22], and theoretical analysis [23]. Based on the above influencing factors, different researchers have studied the influence of water accumulation on pipeline corrosion, interface distribution [24,25], influencing factors of oil flow carrying capacity [26,27], flow pattern characteristics [19,28], and oil-water interface fluctuation characteristics, etc. [14] However, the turbulence models based on Reynolds average method are mostly used in the above simulation studies, which cannot identify the small-scale turbulence information.…”

Section: Introductionmentioning

confidence: 99%

Study on the Law of Diesel Oil Carrying Water in Lanzhou–Chengdu–Chongqing Product Oil Pipeline Based on Large Eddy Simulation

et al. 2020

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Water accumulation at the bottom of the product oil pipeline will lead to corrosion damage to the pipeline. The study on water carrying laws of refined oil could provide a reference for the safe operation of the pipeline. In this paper, the actual size of Lanzhou–Jiangyou section of Lanzhou–Chengdu–Chongqing pipeline was taken as the pipeline size. The volume of fluid (VOF) model of oil-water two-phase flow based on large eddy simulation (LES) was established. The numerical simulation of the water-carrying behavior of the product oil in the inclined pipeline was carried out. The LES-based two-phase flow model can capture the characteristics of stratified flow, wavy stratified flow, and dispersed flow under various operating conditions. The model was applied to simulate the water carrying process under various oil inlet velocities and the inclined pipe angles. The results show that as the pipeline inclined angle is 10~20° and the oil inlet velocity is 0.66 m/s, the flow patterns in the pipeline mainly include stratified flow and wavy stratified flow. As the oil inlet velocity is 0.88~1.55 m/s, the flow patterns in the pipe are mainly stratified flow, wavy stratified flow, and dispersed flow. As the inclined angle of the pipeline is 30~40°, the flow patterns in the pipeline mainly include stratified flows, wavy stratified flows, and dispersed flows. Finally, with the increase of flow time, water can be carried completely from the pipeline through the oil. With the increase of oil inlet velocity, the water carrying capacity of oil gradually increases. With the increase of pipeline inclination, the water carrying capacity of oil firstly increases and then decreases.

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“…Flow assurance problems such as hydrates [1,2], wax deposition [3][4][5][6][7], and asphaltenes are critical operating challenges to ensure the safe and efficient transportation of unprocessed well steams especially in offshore oil fields [8,9]. As the offshore deep-water reservoirs mature, especially if secondary or tertiary recovery methods are employed, the amount of produced water climbs, which increases the risk of gas hydrate plugging the pipelines.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Hydrate Formation and Flow Characteristics with High Water Cuts

et al. 2018

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The rapid increasing amount of produced water in the deep-water and ultra-deep-water fields, especially those at their later development stages, increases the risk of the occurrence of hydrates plugging. In order to prevent and remediate the hydrates risks, it is important to understand the hydrate formation, slurry flow, and plugging characteristics and mechanisms under high water cuts conditions. In this paper, experiments with high water cuts ranging from 60–100% were conducted using a high pressure flow loop with observation windows. The whole processes of the hydrate formation, slurry flow and plugging is visually seen and recorded, and has been discussed and explained in detail in this paper. Moreover, it is found that the increasing water cuts shorten the induction time, but increase the volume fraction of hydrates. As the water cuts increase, the flow time of the hydrate slurry decreases, which serves as a critical parameter for the safe operation of the pipeline. In addition, different hypothetical mechanisms have been proposed for the medium and high water cuts conditions. We believe that this research can provide theoretical support for the safe transportation of oil and gas development in the high water cut oilfield.

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Three-phase gas-oil-water flow in undulating pipeline

Cited by 14 publications

References 7 publications

Flow Assurance of Hydrate Risk in Natural Gas/Oil Transportation: State-of-the-Art and Future Challenges

Flow Assurance of Hydrate Risk in Natural Gas/Oil Transportation: State-of-the-Art and Future Challenges

Study on the Law of Diesel Oil Carrying Water in Lanzhou–Chengdu–Chongqing Product Oil Pipeline Based on Large Eddy Simulation

Experimental Study on Hydrate Formation and Flow Characteristics with High Water Cuts

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