Modeling and validation of the CO2 degassing effect on CaCO3 precipitation using oilfield data

Cosmo, Rafael de Paula; Pereira, Fábio de Assis Ressel; Soares, Edson J.; Martins, André Leibsohn

doi:10.1016/j.fuel.2021.122067

Cited by 3 publications

(3 citation statements)

References 72 publications

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“…Calcium carbonate represents most of the carbonate types encountered in geothermal plants and, together with silica scales, accounts for most of the scale species in geothermal applications. [17,9,56] This form of scaling is common in wells with reservoir temperatures of 140-240 °C and is primarily found at the location where the fluid starts to boil. Boiling causes stripping of the CO2 species and an increase in pH, which favors CaCO 3 deposition.…”

Section: Mineral Precipitation (Scaling)mentioning

confidence: 99%

Research and Development on Coatings and Paints for Geothermal Environments: A Review

Fanicchia,

Karlsdottir

2023

Adv Materials Technologies

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Geothermal power plants are complex systems, where the interplay between different metallic components transforms the enthalpy of hot brine in the form of electricity or usable heated water. The naturally occurring variety in brine chemistry, linked to the presence of specific key species, and its thermo‐physical properties, leads to the development of different power plant configurations. Key species and power plant configuration in turn determine the extent of damage experienced by each component in the power plant: erosion, corrosion, and/or scaling, often acting combined. Paints and coatings, compared to changing the component alloy, have represented a preferred solution to mitigate these issues due to advantages in terms of costs and repairability. This is reflected in the large number of publications on research and development in this area within the past ≈50 years, with even an increasing trend in the past 10–20 years, indicating the strong interest to develop this clean and sustainable energy source. Therefore, in this work, the first of its kind after 1980, an in‐depth review of all published work on research performed on paints and coatings for geothermal applications, subdivided by the material system, is provided.

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Section: Mineral Precipitation (Scaling)mentioning

confidence: 99%

Research and Development on Coatings and Paints for Geothermal Environments: A Review

Fanicchia,

Karlsdottir

2023

Adv Materials Technologies

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“…This may be the reason that the optimal intake volume corresponding to different pH values was 2.0 L. However, when the intake volume exceeded 2.0 L, the CO 2 was passed into the leachate in excess, and the excess CO 2 could react with the newly generated CaCO 3 (s) to form soluble Ca(HCO 3 ) 2 (Formula (8)). Hence, CaCO 3 (s) could be dissolved again [40]. Therefore, when the intake volume was much greater than 2.0 L, the excess CO 2 could cause the Ca 2+ removal rate in the leachate to decrease.…”

Section: Effect Of Volume Of Landfill Gas Intake On the Rate Of Calci...mentioning

confidence: 99%

Leachate Pretreatment before Pipe Transportation: Reduction of Leachate Clogging Potential and Upgrading of Landfill Gas

Xie

Guo

Liú

2022

IJERPH

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Leachate and landfill gas are the main contaminants produced by modern sanitary landfills. The leachate easily leads to clogging in the leachate transportation pipe, and the landfill gas can be used as renewable energy after the removal of CO2. The study aims to investigate the removal of the major scale forming ion of Ca2+ in leachate using raw landfill gas before pipe transportation. The research demonstrated that, under the given experimental conditions, the removal rate of Ca2+ in the leachate was positively correlated with the pH value of the leachate, and negatively correlated with the intake flow rate of the landfill gas; the highest removal rate of Ca2+ was achieved when the intake flow rate and volume were 0.05 L/min and 2.0 L, respectively, and the highest removal rate of Ca2+ from the leachate was about 90%. The maximum removal rate of CO2 from landfill gas could reach 95%, and the CO2 content of the post-reaction gas was as low as 1.74% (volume percentage). The scanning electron microscope (SEM) and X-ray diffraction (XRD) analysis showed that the precipitate was spherical and mainly contained inorganic substances such as CaCO3, MgCO3, Ca(OH)2, Mg(OH)2, and SiO2. The study showed that, before the leachate was piped, the Ca2+ could be removed using the raw landfill gas, thereby reducing the potential for the formation of precipitation clogging in the pipeline. This study also provides new ideas for upgrading landfill gas to achieve a renewable-energy utilization plan, and reduces greenhouse gas emissions by reducing CO2 emissions from landfills.

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“…Nergaard et al [8] investigated the formation of a calcium carbonate scale on the outer surface of a heating pipe in a recirculation device, separated the influence of saturation from temperature, and analyzed the linear scale growth rate of the calcium carbonate scale [9]. Chi et al [10] applied the groundwater chemistry simulation software Phreeqc to investigate the effect of temperature on the erosion of feldspar by groundwater solutions at different CO 2 partial pressures, calcium feldspar, potassium feldspar, and sodium feldspar in solution simultaneously and separately at different CO 2 partial pressures were hydrochemically simulated by Phreeqc [11]. Fang et al [9] used a coupled computational fluid dynamics (CFD)-discrete element method to numerically analyze the movement of particles in a fractured fog model to clarify the migration and channel flow control law of particles in fractured porous carbonate reservoirs [12]; de Paula Cosmo et al [11] analyzed the calcium carbonate fouling law in oil and gas field pipeline with high CO 2 content under pseudo-equilibrium conditions by self-developed thermodynamic calculation software [13]; Zhiming et al [12] established a mathematical model of CaSO 4 precipitation fouling formation process in circular pipe from the perspective of heat and mass transfer, and conducted corresponding numerical simulation and experimental validation.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fouling Pattern of Tunnel Drainage Pipe in Karst Areas

Lv,

Wu,

et al. 2023

Advances in Civil Engineering

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As the groundwater in karst areas is rich in calcium ions, when the groundwater flows out of the tunnel drainage pipe, calcium carbonate crystals will be precipitated and then adhere to the pipe wall, which will easily cause chemical blockage in the drainage pipe wall, thus affecting the drainage efficiency and leading to the increase of water pressure outside the tunnel lining, affecting the safety and stability of the structure. Therefore, the blockage of calcium carbonate crystals in tunnel drains is one of the most important problems for the safe and normal operation of tunnels. In order to quantify and qualify the process of crystalline blockage in the drainage system of tunnels in karst areas, this paper constructs a numerical model with coupled multiphysical fields of the flow field and particle concentration field and also combines data from indoor tests to compare and verify the simulation results and analyze the time-varying law of crystalline solids deposited on the pipe wall. In this paper, we consider the force situation of crystalline solids in the pipe by water flow, analyze the related theories, comprehensively study the migration and deposition law of crystalline particles in the drainage pipe, and establish a numerical simulation model of the pipe crystallization rate considering temperature, flow velocity and concentration of sediment particles based on ANSYS FLUENT software, and refine and analyze several parameters in the model, so that it can provide a theoretical analysis framework for the tunnel drainage pipe blockage in karst areas by providing a theoretical analysis framework.

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Modeling and validation of the CO2 degassing effect on CaCO3 precipitation using oilfield data

Cited by 3 publications

References 72 publications

Research and Development on Coatings and Paints for Geothermal Environments: A Review

Research and Development on Coatings and Paints for Geothermal Environments: A Review

Leachate Pretreatment before Pipe Transportation: Reduction of Leachate Clogging Potential and Upgrading of Landfill Gas

Analysis of Fouling Pattern of Tunnel Drainage Pipe in Karst Areas

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