Wisp-like structures in vertical gas–liquid pipe flow revealed by wire mesh sensor studies

Hernández-Pérez, V.; Azzopardi, B.J.; Kaji, Ryuhei; Silva, Marco J. da; Beyer, Matthias; Hampel, Uwe

doi:10.1016/j.ijmultiphaseflow.2010.08.002

Cited by 30 publications

(3 citation statements)

References 19 publications

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“…In order to check the possibility to broaden the application of gas-liquid flow models to compute slug frequency for gas-liquid-liquid flow, the experimental data of slug frequency for different superficial oil and water velocities (ranged within the intervals of 0.36<Jo<0.60 m/s and 1.05<Jw<1.32 m/s) were compared with some of the most used correlations, listed in Table 5. A detailed description of these models was presented in the study of Hernandez-Perez et al (2010). Among the models reported in Table 5, the correlation developed by Gokcal (2010) is based on high viscosity data and does not consider the influence of superficial gas velocity.…”

Section: Slug Frequencymentioning

confidence: 99%

Study of viscous oil-water-gas slug flow in a horizontal pipe

Dehkordi

Colombo

Mohammadian

et al. 2019

Journal of Petroleum Science and Engineering

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Section: Slug Frequencymentioning

confidence: 99%

Study of viscous oil-water-gas slug flow in a horizontal pipe

Dehkordi

Colombo

Mohammadian

et al. 2019

Journal of Petroleum Science and Engineering

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“…A large number of flow pattern classifications exists partly due to the subjective nature of identification methods and can also be attributed to the effects of flow conditions, pipe geometry, and fluid properties. Additionally, the application of current technologies such as wire mesh sensors is aiding more accurate identification of previously unknown flow characteristics (Abdulkadir et al, 2014a;Aliyu et al, 2017;Almabrok et al, 2016;Ambrose, 2015;Hernandez Perez et al, 2010;Peddu et al, 2018). Common flow patterns reported, however, are bubble, slug, churn (froth), annular (Hewakandamby et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

An assessment of gas void fraction prediction models in highly viscous liquid and gas two-phase vertical flows

Ribeiro

Liao

Aliyu

et al. 2020

Journal of Natural Gas Science and Engineering

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Gas void fraction plays a significant role in determination of several multiphase flow parameters. Good insight of its behaviour coupled with accurate prediction is imperative for design of efficient equipment which has the potential to translate to higher production rates in the petroleum industry. Against the background of the prevalence of higher viscous and imminent application of highly viscous liquids in the petroleum industry, air-water and air-low viscous liquid mixtures dominate gas void fraction research in vertical pipes. In this work, gas-liquid ( = 100 − 7000 ) mixtures are used to investigate the behaviour of gas void fraction in vertical pipes. The influence of superficial phase velocities and liquid viscosity are observed. Further, a combined database consisting of experimental and the reported data of Schmidt et al. (2008) is employed to evaluate the predictions of 100 existing correlations. The results indicate that the Hibiki and Ishii (2003) and Bestion (1990) correlations are the overall best and secondbest performing correlations. In the absence good performing correlations for churn and annular flows, two correlations each, based on drift flux and slip ratio, are developed respectively. Predictions from these correlations show good agreement with the database and comparable performance with the overall best correlations.

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“…Among tomographic techniques based on a variety of measuring principles—such as gamma-ray, X-ray, impedance, ultrasound and others—a technique known as the wire-mesh sensor has emerged as a very competitive alternative, due to its high spatial and temporal resolution (up to few millimeters and few kilohertz range). It has been applied in a number of pilot plant studies around the world [2,3,4,5,6]. Hence, in this paper, the wire-mesh sensor was applied for the first time to characterize the flow inside reduced-scale subsea equipment from the oil industry.…”

Section: Introductionmentioning

confidence: 99%

Multiple Wire-Mesh Sensors Applied to the Characterization of Two-Phase Flow inside a Cyclonic Flow Distribution System

Ofuchi

Eidt

Rodrigues

et al. 2019

Sensors

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Wire-mesh sensors are used to determine the phase fraction of gas–liquid two-phase flow in many industrial applications. In this paper, we report the use of the sensor to study the flow behavior inside an offshore oil and gas industry device for subsea phase separation. The study focused on the behavior of gas–liquid slug flow inside a flow distribution device with four outlets, which is part of the subsea phase separator system. The void fraction profile and the flow symmetry across the outlets were investigated using tomographic wire-mesh sensors and a camera. Results showed an ascendant liquid film in the cyclonic chamber with the gas phase at the center of the pipe generating a symmetrical flow. Dispersed bubbles coalesced into a gas vortex due to the centrifugal force inside the cyclonic chamber. The behavior favored the separation of smaller bubbles from the liquid bulk, which was an important parameter for gas-liquid separator sizing. The void fraction analysis of the outlets showed an even flow distribution with less than 10% difference, which was a satisfactorily result that may contribute to a reduction on the subsea gas–liquid separators size. From the outcomes of this study, detailed information regarding this type of flow distribution system was extracted. Thereby, wire-mesh sensors were successfully applied to investigate a new type of equipment for the offshore oil and gas industry.

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Wisp-like structures in vertical gas–liquid pipe flow revealed by wire mesh sensor studies

Cited by 30 publications

References 19 publications

Study of viscous oil-water-gas slug flow in a horizontal pipe

Study of viscous oil-water-gas slug flow in a horizontal pipe

An assessment of gas void fraction prediction models in highly viscous liquid and gas two-phase vertical flows

Multiple Wire-Mesh Sensors Applied to the Characterization of Two-Phase Flow inside a Cyclonic Flow Distribution System

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