Probabilistic estimation of hydrate formation

Herath, Dinesh; Khan, Faisal; Rathnayaka, Samith; Rahman, Mohammad Azizur

doi:10.1016/j.petrol.2015.08.007

Cited by 22 publications

(10 citation statements)

References 12 publications

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“…Herath et al [16] proposed a Shortest Path of Hydrate Formation (SPHF) prediction method for predicting hydrate formation probability in a subsea production and transportation system, which is not based on van der Waals' and Platteeuw model.…”

Section: S T R U C T U R E I S T R U C T U R E I I S T R U C T U R E Hmentioning

confidence: 99%

Gas Hydrate Formation Phase Boundary Behaviour of Synthetic Natural Gas System of the Keta Basin of Ghana

Broni-Bediako¹,

Amorin²,

Bavoh³

2017

TOPEJ

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Background:Gas hydrates are considered as a major threat to the oil and gas flow assurance industry. At high pressure and low temperature conditions, gas hydrates form in pipelines and production facilities leading to pipeline blockages, high removal cost, environmental hazards and loss of lives. For a successful prevention of gas hydrate formation, predicting the hydrate formation phase boundary of hydrocarbon fluid composition becomes very necessary. Objective and Method:In this study, computer simulation software called PVTSim was used to predict hydrate formation phase boundary of synthetic natural gas composition of the Keta basin of Ghana at pressure and temperature ranges of 43.09 bar -350 bar and 12.87 °C -27.29°Crespectively. The effect of changes in natural gas composition (N 2 and H 2 S) and the presence of four commonly used thermodynamic gas hydrate inhibitors (methanol, ethanol, diethylene glycol and monoethylene glycol) on the hydrate formation phase boundary is also discussed. Prior to the study, the accuracy of PVTSim was validated with the hydrate formation phase data in literature. Results and Conclusion:Results suggested that the hydrate formation phase boundary decreased with increasing N 2 composition and increased with increasing H 2 S composition, suggesting that, the presence of H 2 S increases the threat of hydrate formation. However, a reduction in hydrate formation threat was observed in the presence of all four commonly used gas hydrate thermodynamic inhibitors with methanol demonstrating the highest inhibition effect.

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Section: S T R U C T U R E I S T R U C T U R E I I S T R U C T U R E Hmentioning

confidence: 99%

Gas Hydrate Formation Phase Boundary Behaviour of Synthetic Natural Gas System of the Keta Basin of Ghana

Broni-Bediako¹,

Amorin²,

Bavoh³

2017

TOPEJ

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“…Formation of hydrates can be remediated by increasing temperature, decreasing pressure, and adding inhibitors. 63 Extensive studies on thermodynamic hydrate inhibitors were carried out to reduce the risk of hydrate formation within the formation. Thermodynamic hydrate inhibitors are capable of shifting the phase equilibrium to a lower temperature and higher pressure regions.…”

Section: Injectivity Impairmentmentioning

confidence: 99%

“…Figure presents a CO 2 hydrate formation curve. Formation of hydrates can be remediated by increasing temperature, decreasing pressure, and adding inhibitors . Extensive studies on thermodynamic hydrate inhibitors were carried out to reduce the risk of hydrate formation within the formation.…”

Section: Challenges Of Co2 Storage In Deep Saline Aquifersmentioning

confidence: 99%

Minireview on CO₂ Storage in Deep Saline Aquifers: Methods, Opportunities, Challenges, and Perspectives

Mim,

Negash,

Jufar

et al. 2023

Energy Fuels

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“…Our research group has researched two-phase flow [8][9][10][11][12][13] and multiphase flow [14]. The purpose of the study is to visualize the impact of fluid flow rate [3], fluid rheology [15], drill pipe rotation and eccentricity on cutting transport [16], transitional velocity profile, the effect of near-wall fluid turbulence and drag stress with and without the solid cuttings bed to mimic best drilling conditions for horizontal wells in ex-situ conditions.…”

Section: Introductionmentioning

confidence: 99%

Application of Particle Image Velocimetry (PIV) on Newtonian and Two-phase Slurry Flow through the Annulus

Siddiqui¹,

Rahman²

2023

Proceedings of the 10th International Conference on Fluid Flow, Heat and Mass Transfer (FFHMT 2023)

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The objective of the study is to visualize the impact of fluid flow rate, fluid rheology, drill pipe rotation and eccentricity of drill pipe on cutting transport, transitional velocity profile, the effect of near-wall fluid turbulence and drag stress with and without the solid cuttings bed to mimic best drilling conditions for horizontal wells in ex-situ conditions. The analysis has conducted using combined techniques of Laser-induced Particle Image Velocimetry (PIV), Seeding/fluorescent tracers tracking, and Refractive Index Matching (RIM). Experiments have been performed on a plant-scale multiphase flow loop. The pipe sections of the flow loop and investigation area were made up of acrylic glass to imagine fluid flow patterns better. Biopolymer Flowzan® is used in different concentrations to obtain non-Newtonian characteristics of the liquid. For PIV analysis, seeding particles of a hollow glass material having a uniform diameter of 20 nm and fluorescent particles of size 20-30 μm were used to track and illuminate particles. A class IV LASER was used to illuminate the flow field inside the RIM box. The premixed seeding and fluorescent particles with the flow were tracked to evaluate the velocity field for the respective interested area by the PIV system. A high-speed CCD Phantom® v7.3 camera was utilized to capture flowing particles under the laser field. Both Laser and camera were placed in the normal position to capture PIV images. The refraction Matching Index (RIM) method was applied to calibrate the system by introducing the same fluid inside the RIM box to avoid the error of particle position in the annulus due to glass-liquid-glass refraction. To evaluate the statistics for the desired velocity field of the flow acquired, data was thoroughly investigated with DaVis 8.4 software. Additionally, the turbulent behavior of the slurry flow has also been identified with high preciseness, and the corresponding characteristics of the suspended particles were also observed at the same time. The velocity field outcomes will suggest that at the bottom of the annulus section, the velocity at the near-wall region deviates from the bulk velocity of the fluid because of the solid accumulation tendency. However, a higher flow rate of the slurry may introduce more suspended solid particles, which can eventually result in a uniform velocity field for the whole annulus section. The fluid flow patterns were altered due to drill pipe rotations and solid particles' helical motion. The rotation of the drill pipe resulted in the solid and tracer particles scattered more uniformly in the annular cross-section, which provided a constructive impression on the cutting transport. This technique provides a better prediction of mass and momentum transfer and identification of velocity profiles and pressure drop gradient in multiphase flow on a large scale.

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Probabilistic estimation of hydrate formation

Cited by 22 publications

References 12 publications

Gas Hydrate Formation Phase Boundary Behaviour of Synthetic Natural Gas System of the Keta Basin of Ghana

Gas Hydrate Formation Phase Boundary Behaviour of Synthetic Natural Gas System of the Keta Basin of Ghana

Minireview on CO₂ Storage in Deep Saline Aquifers: Methods, Opportunities, Challenges, and Perspectives

Application of Particle Image Velocimetry (PIV) on Newtonian and Two-phase Slurry Flow through the Annulus

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Probabilistic estimation of hydrate formation

Cited by 22 publications

References 12 publications

Gas Hydrate Formation Phase Boundary Behaviour of Synthetic Natural Gas System of the Keta Basin of Ghana

Gas Hydrate Formation Phase Boundary Behaviour of Synthetic Natural Gas System of the Keta Basin of Ghana

Minireview on CO2 Storage in Deep Saline Aquifers: Methods, Opportunities, Challenges, and Perspectives

Application of Particle Image Velocimetry (PIV) on Newtonian and Two-phase Slurry Flow through the Annulus

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Product

Resources

About

Minireview on CO₂ Storage in Deep Saline Aquifers: Methods, Opportunities, Challenges, and Perspectives