Dynamic modeling of the formation damage and mud cake deposition using filtration theories coupled with SEM image processing

Rabbani, Arash; Salehi, Saeed

doi:10.1016/j.jngse.2017.02.047

Cited by 95 publications

(42 citation statements)

References 17 publications

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“…Inset: Magnified images and areas. ( D to F ) Distribution of pore diameter captured by MATLAB code ( 58 , 59 ). The greater the anodization voltage, the larger the pore diameter.…”

Section: Resultsmentioning

confidence: 99%

Reliable multilevel memristive neuromorphic devices based on amorphous matrix via quasi-1D filament confinement and buffer layer

et al. 2022

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Conductive-bridging random access memory (CBRAM) has garnered attention as a building block of non–von Neumann architectures because of scalability and parallel processing on the crossbar array. To integrate CBRAM into the back-end-of-line (BEOL) process, amorphous switching materials have been investigated for practical usage. However, both the inherent randomness of filaments and disorders of amorphous material lead to poor reliability. In this study, a highly reliable nanoporous–defective bottom layer (NP–DBL) structure based on amorphous TiO 2 is demonstrated (Ag/a-TiO 2 /a-TiO x /p-Si). The stoichiometries of DBL and the pore size can be manipulated to achieve the analog conductance updates and multilevel conductance by 300 states with 1.3% variation, and 10 levels, respectively. Compared with nonporous TiO 2 CBRAM, endurance, retention, and uniformity can be improved by 10 6 pulses, 28 days at 85°C, and 6.7 times, respectively. These results suggest even amorphous-based systems, elaborately tuned structural variables, can help design more reliable CBRAMs.

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“…Inset: Magnified images and areas. ( D to F ) Distribution of pore diameter captured by MATLAB code ( 58 , 59 ). The greater the anodization voltage, the larger the pore diameter.…”

Section: Resultsmentioning

confidence: 99%

Reliable multilevel memristive neuromorphic devices based on amorphous matrix via quasi-1D filament confinement and buffer layer

et al. 2022

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“…Filter cake should be thin and have low permeability. Thicker cakes with high permeability reduce diameter of the hole and leads to higher possibility of stuck pipes, increased torque and drag and poor primary cementing job [22][23][24].…”

Section: Filtration Measurementmentioning

confidence: 99%

Study on Attapulgite as Drilling Fluid Clay Additive in Persian Gulf Seawater

2022

IJE

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“…where k e (t) is the equivalent filter cake permeability, mD; k 1 is the real situation with time-dependent filter cake permeability, mD; w o is the constant filter cake thickness, m; w(t) is the real situation with time-dependent filter cake thickness, m; and r w is the filter cake inner radius, m. During drilling, many factors such as drill-string rotational speed, annulus velocity, drilling fluid type, solid particle size, formation temperature, formation pressure, and formation permeability, can influence the time-dependent properties of the filter cake (Jaffal et al, 2018;Ma et al, 2020;Ribeiro et al, 2017;Veisi et al, 2020;Yao et al, 2014). Some experimental and mathematical models have been conducted to study the filter cake growth process (Fisher et al, 2000;Hashemzadeh and Hajidavalloo, 2016;Jaffal et al, 2017;Ma et al, 2020;Rabbani and Salehi, 2017), and their results showed that both the thickness and permeability of filter cake obey the exponential changing modes. Some previous researchers have utilized the empirical equations with the exponential changing modes to investigate the time-dependent filter cake effects on wellbore stresses (Feng et al, 2018a;Tran et al, 2011), but the coefficients of their empirical equations are constant, which can only be used in some special cases.…”

Section: Equivalent Filter Cake Permeabilitymentioning

confidence: 99%

Transient response of near-wellbore supercharging during filter cake growth

Peng

Chen

et al. 2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Supercharging in the vicinity of a borehole is an important factor that affects formation damage and drilling safety, and the filter cake growth process has a significant impact on supercharging in the vicinity of the borehole. However, existing models that predict pore pressure distribution overlook dynamic filter cake growth. Thus, an analytical supercharging model was developed that considers time-dependent filter cake effects, and this model was verified using a two-dimensional numerical model. The influences of filter cake, formation, and filtrate properties on supercharging were investigated systematically. The results indicate that time-dependent filter cake effects have significant influence on supercharging. Supercharging increases in the early stage but decreases over time because of the dynamic growth of filter cake, and the supercharging magnitude decreases along the radial direction. Because of filter cake growth, the magnitude of supercharging falls quickly across the filter cake, and the decreased magnitude of pore pressure caused by the filter cake increases. Supercharging in low-permeability formations is more obvious and the faster rate of filter cake growth, a lower filtrate viscosity and faster reduction rate of filter cake permeability can help to weaken supercharging. The order of importance of influencing factors on supercharging is overbalance pressure > formation permeability > formation porosity ≈ filtrate viscosity > filter cake permeability attenuation coefficient > initial filter cake permeability control ratio > filter cake growth coefficient > filter cake porosity. To alleviate supercharging in the vicinity of the borehole, adopting drilling fluids that allow a filter cake to form quickly, optimizing drilling fluid with a lower filtrate viscosity, keeping a smaller overbalance pressure, and precise operation at the rig site are suggested for low-permeability formations during drilling.

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Dynamic modeling of the formation damage and mud cake deposition using filtration theories coupled with SEM image processing

Cited by 95 publications

References 17 publications

Reliable multilevel memristive neuromorphic devices based on amorphous matrix via quasi-1D filament confinement and buffer layer

Reliable multilevel memristive neuromorphic devices based on amorphous matrix via quasi-1D filament confinement and buffer layer

Study on Attapulgite as Drilling Fluid Clay Additive in Persian Gulf Seawater

Transient response of near-wellbore supercharging during filter cake growth

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