Modeling and simulation of barite deposition in an annulus space of a well using CFD

Movahedi, Hamed; Shad, Saeed; Mokhtari-Hosseini, Zahra Beagom

doi:10.1016/j.petrol.2017.12.014

Cited by 18 publications

(10 citation statements)

References 17 publications

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“…Rheological behavior of drilling fluids is one of the most important parameters which plays a vital role in the exact calculation of pressure drop in drilling wells, hole cleaning, and drilling hydraulic. , Determination of the exact rheological model leads to the reduction in computational error and more accurate predictions in drilling wells. Drilling fluids often have a non-Newtonian behavior because of the presence of swollen clay particles and the presence of surface electrical charges on the clay surface.…”

Section: Experimental Studymentioning

confidence: 99%

New Insight into the Filtration Control of Drilling Fluids Using a Graphene-Based Nanocomposite under Static and Dynamic Conditions

Movahedi

Jamshidi

Hajipour

2021

ACS Sustainable Chem. Eng.

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During oil and gas well drilling, the filtration control of bentonite water-based drilling fluids (BT-WBDFs), as an environmentally friendly fluid, is crucial to avoid formation damage and swelling shale problems. One of the most critical problems is undesirable changes in the rheology and filtration properties of the BT-WBDFs because of salt contamination. Herein, the potential of using both graphene oxide (GO) nanosheets and a graphene oxide-polyacrylamide (GO-PAM) nanocomposite is evaluated for controlling the filtration properties, especially in a salty medium. First, GO nanosheets were functionalized, and then the GO-PAM nanocomposite was synthesized using the solution polymerization method. Afterward, the products were characterized using scanning electron microscopy, dynamic light scattering, and Fourier transform infrared spectroscopy. The rheological parameters were analyzed using power-law, Herschel Buckley, and Bingham plastic models. The filtration tests were carried out under both static and dynamic conditions. A membrane cell equipped with an agitating system was used for conducting dynamic tests. Furthermore, the static tests have been conducted under low-pressure/lowtemperature and high-pressure/high-temperature conditions. The experimental results revealed that although adding the GO-PAM nanocomposite into WBDFs, at the concentration below 1 wt %, increases rheological properties more than GO nanosheets, the rate of filtration properties was more reduced for GO nanosheets under static conditions. The obtained results showed that under static conditions, the addition of only 0.5 wt % of GO nanosheets to saline mud could reduce the total cumulative fluid loss, rate of fluid loss, and mud cake thickness more than 60, 99, and 72%, respectively. Under dynamic conditions, similar results were obtained for the shear flow of 700 rpm. However, results showed that the GO-PAM nanocomposite has better performance because of lower cake erosion under high shear flow conditions. GO nanoparticles reduce the filtrate loss by blocking the pore space in the filter cake, while in the presence of polyacrylamide, the adhesion between the particles increases, and the erosion rate decreases under shear flows. The experimental results revealed that using 0.7 wt % GO-PAM nanocomposite could reduce the erosion rate of the mud cake more than 60% under turbulent flow conditions, while this value was 20% for GO nanosheets in the same concentration.

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Section: Experimental Studymentioning

confidence: 99%

New Insight into the Filtration Control of Drilling Fluids Using a Graphene-Based Nanocomposite under Static and Dynamic Conditions

Movahedi

Jamshidi

Hajipour

2021

ACS Sustainable Chem. Eng.

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“…Ahmed and Wagner [28] focused on the vortex shedding and transition frequencies associated with flow around a circular cylinder. During an oil drilling process, complex motion of the drill string [31,32] and the settling velocity of drill cuttings in drilling fluids [33,34] have been the focus of investigations in the field of petroleum engineering. Leth-Espensen et al [35] presented a biomass devolatilization model describing both spherical and cylindrical particles for suspension firing.…”

Section: Literature Reviewmentioning

confidence: 99%

Similarities of Flow and Heat Transfer around a Circular Cylinder

Duan

2020

Symmetry

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Modeling fluid flows is a general procedure to handle engineering problems. Here we present a systematic study of the flow and heat transfer around a circular cylinder by introducing a new representative appropriate drag coefficient concept. We demonstrate that the new modified drag coefficient may be a preferable dimensionless parameter to describe more appropriately the fluid flow physical behavior. A break in symmetry in the global structure of the entire flow field increases the difficulty of predicting heat and mass transfer behavior. A general simple drag model with high accuracy is further developed over the entire range of Reynolds numbers met in practice. In addition, we observe that there may exist an inherent relation between the drag and heat and mass transfer. A simple analogy model is established to predict heat transfer behavior from the cylinder drag data. This finding provides great insight into the underlying physical mechanism.

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“…The drilling fluid circulation system is one of the critical parts of drilling oil and gas wells. Drilling mud has various roles, such as cooling the drill bit and drill string, hole cleaning or transporting the drilling cuttings to the surface, stabilizing the wellbore, and proper filtration. − Various drilling fluid types are used, including water-based and oil-based drilling muds (WBDMs and OBDMs) . With increasingly stringent environmental regulations, environmentally friendly and high-performance WBDMs are essential.…”

Section: Introductionmentioning

confidence: 99%

Hydrodynamic Analysis and Cake Erosion Properties of a Modified Water-Based Drilling Fluid by a Polyacrylamide/Silica Nanocomposite during Rotating-Disk Dynamic Filtration

2022

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In this study, the potential of using a polyacrylamide-silica nanocomposite (PAM-S) to control the filtration properties of bentonite water-based drilling muds under different salinity conditions was evaluated. Static filtration tests under low-pressure/low-temperature (LPLT) conditions accompanied by rheological measurements have been carried out to analyze the role of silica nanoparticles (NPs) and nanocomposites (NCs) in the base fluid properties. Moreover, high-pressure/high-temperature (HPHT) static filtration was also investigated to evaluate the thermal stability of PAM-S. Afterward, dynamic filtration has been conducted in a filtration cell equipped with an agitating system with a disk-type impeller to investigate the hydrodynamic and formation of a filter cake under shear flow conditions. Fluid flow velocity and wall shear stress (WSS) distribution over the filter cake were analyzed using an exact 3D computational fluid dynamic (CFD) simulation. A transparent filtration cell with a camera was used to accurately record the fluid flow field inside the filter press and validate the CFD results. The obtained results indicated that adding silica NPs at a concentration of less than 2 wt % increases the fluid loss due to reducing rheological properties such as yield point. While silica NPs could not significantly change the mud properties, the experimental results showed that, under both LPLT and HPHT conditions, the PAM-S NC could reduce the total filtration loss by 70% at a low concentration of 0.75 wt %. Moreover, during dynamic filtration, the results indicated that there is a linear relationship between the cake thickness and the inverse of WSS at different operating pressures. However, no correlation could be found between predeposited mud cake erosion and WSS. At a rotating disk speed of 1000 rpm, more than 60% of the predeposited mud cake was eroded after 30 min for a saline mud sample while for the NC-treated mud sample cake erosion is considerably reduced and reaches up to 20% at 1.5 wt % PAM-S.

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Modeling and simulation of barite deposition in an annulus space of a well using CFD

Cited by 18 publications

References 17 publications

New Insight into the Filtration Control of Drilling Fluids Using a Graphene-Based Nanocomposite under Static and Dynamic Conditions

New Insight into the Filtration Control of Drilling Fluids Using a Graphene-Based Nanocomposite under Static and Dynamic Conditions

Similarities of Flow and Heat Transfer around a Circular Cylinder

Hydrodynamic Analysis and Cake Erosion Properties of a Modified Water-Based Drilling Fluid by a Polyacrylamide/Silica Nanocomposite during Rotating-Disk Dynamic Filtration

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