Study of the ultrasonic propagation law in the gas–liquid two-phase flow of deepwater riser through numerical simulation

Xu, Yuqiang; Guan, Zhichuan; Jin, Yan; Yang, Tian; Liu, Yongwang; Xu, Chuanbin; Shi, Yucai

doi:10.1016/j.petrol.2017.09.051

Cited by 15 publications

(4 citation statements)

References 7 publications

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“…As it is known, the intensity of the wave is proportional to the square of the amplitude of wave [17], which is why, if we know (29), it is possible to pass over to the amplitude dependence…”

Section: Results Of the Study Into A Process Of Propagation Of Volumementioning

confidence: 99%

“…A method of numerical simulation of propagation of ultrasonic oscillations in the gas-liquid two-phase flow is reported in work [29]. As a result of the analysis, the authors selected two characteristic parameters of ultrasound signals that are sensitive to the gas-liquid ratio, specifically standard deviation of the amplitude and the mean value of frequency.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Investigation of the effect of characteristics of gascontaining suspensions on the parameters of the process of ultrasonic wave propagation

Morkun

Tron

et al. 2017

EEJET

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Section: Results Of the Study Into A Process Of Propagation Of Volumementioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Investigation of the effect of characteristics of gascontaining suspensions on the parameters of the process of ultrasonic wave propagation

Morkun

Tron

et al. 2017

EEJET

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“…Deep mud drilling fluid systems are highly dense, gelling, colloidal and suspending, and their rheological properties are extremely responsible [6]. The addition of various additives in deep drilling process not only deviates from Newtonian flow model, but also does not follow simple Muru model or H-B model [7][8][9]. Especially under the condition of high temperature and high pressure, the Brownian motion of mud becomes more intense, the molecules of admixture may have the function of resolution, decomposition and degradation, and the dispersity is better, and even the phenomenon of coalescence may occur.…”

Section: Simulation Test and Modeling Of Slurry Rheology Under High Tmentioning

confidence: 99%

Mechanism of heat transfer for gas-liquid two-phase flow in deep drilling

Zhong¹,

Peng²,

Jiang³

2018

IJHT

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Drilling fluid cooling technology is one of the key techniques of drilling technology. In order to study the influence of mechanism of drilling fluid on temperature and pressure, especially on thermophysical parameters and rheological properties, as well as the heat transfer mechanism between bubbles and liquid flow inside and outside the liquid film by test, simulation and theoretical research. Firstly, the test on thermophysical parameters of 10 kinds of drilling fluids at 7 different temperatures and 3 different pressure were analyzed, which would provide the key parameters for the establishment of downhole gas-liquid two-phase model. Then, study on rheology of cement slurry under high temperature and high pressure, and its heat transfer equations were derived. The results showed that the specific heat of mud decreases with the increase of density, and the thermal conductivity increases with the increase of density, almost linearly. Besides, gas is the main factor affecting heat transfer inside the well.

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“…Hage et al 17 discuss a similar method based on a modified Wood’s equation for evaluating the velocity and phase change of an acoustic wave propagating along the annulus of the borehole. Adaptations of this principle are also evaluated numerically 18 and, experimentally 19 – 25 .…”

Section: Introductionmentioning

confidence: 99%

Effect of bubble size on ultrasound backscatter from bubble clouds in the context of gas kick detection in boreholes

Indimath

Fiorentini

Bøklepp

et al. 2023

Sci Rep

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Early detection of gas influx in boreholes while drilling is of significant interest to drilling operators. Several studies suggest a good correlation between ultrasound backscatter/attenuation and gas volume fraction (GVF) in drilling muds, and thereby propose methods for quantification of GVF in boreholes. However, the aforementioned studies neglect the influence of bubble size, which can vary significantly over time. This paper proposes a model to combine existing theories for ultrasound backscatter from bubbles depending on their size, viz. Rayleigh scattering for smaller bubbles, and specular reflection for larger bubbles. The proposed model is demonstrated using simulations and experiments, where the ultrasound backscatter is evaluated from bubble clouds of varying bubbles sizes. It is shown that the size and number of bubbles strongly influence ultrasound backscatter intensity, and it is correlated to GVF only when the bubble size distribution is known. The information on bubble size is difficult to obtain in field conditions causing this correlation to break down. Consequently, it is difficult to reliably apply methods based on ultrasound backscatter, and by extension its attenuation, for the quantification of GVF during influx events in a borehole. These methods can however be applied as highly sensitive detectors of gas bubbles for GVF $$\ge$$ ≥ 1 vol$$\%$$ % .

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Study of the ultrasonic propagation law in the gas–liquid two-phase flow of deepwater riser through numerical simulation

Cited by 15 publications

References 7 publications

Investigation of the effect of characteristics of gascontaining suspensions on the parameters of the process of ultrasonic wave propagation

Investigation of the effect of characteristics of gascontaining suspensions on the parameters of the process of ultrasonic wave propagation

Mechanism of heat transfer for gas-liquid two-phase flow in deep drilling

Effect of bubble size on ultrasound backscatter from bubble clouds in the context of gas kick detection in boreholes

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Study of the ultrasonic propagation law in the gas–liquid two-phase flow of deepwater riser through numerical simulation

Cited by 15 publications

References 7 publications

Investigation of the effect of characteristics of gas­containing suspensions on the parameters of the process of ultrasonic wave propagation

Investigation of the effect of characteristics of gas­containing suspensions on the parameters of the process of ultrasonic wave propagation

Mechanism of heat transfer for gas-liquid two-phase flow in deep drilling

Effect of bubble size on ultrasound backscatter from bubble clouds in the context of gas kick detection in boreholes

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Product

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Investigation of the effect of characteristics of gascontaining suspensions on the parameters of the process of ultrasonic wave propagation

Investigation of the effect of characteristics of gascontaining suspensions on the parameters of the process of ultrasonic wave propagation