Fines migration during supercritical CO2 injection in sandstone

Othman, Faisal; Yu, Menghan; Kamali, Fatemeh; Hussain, Furqan

doi:10.1016/j.jngse.2018.06.001

Cited by 64 publications

(23 citation statements)

References 52 publications

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“…However, this dissolution results in the dislodgment of less reactive minerals such as clay and quartz, which aggregate into microscopic particles and are mobilized along the flowing stream, resulting in plugging of the reservoir rock's narrow pore channels and a reduction in permeability (F. Othman, M. Yu, F. Kamali, and F. Hussain, 2018). Normally, mineral dissolution is preferred, as is the case with matrix acidifying activities, but this subsequent mechanism of precipitation and fines migration during continuous CO2 injection would reduce permeability.…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling the Combined Effect of Salt Precipitation and Fines Migration on CO2 Injectivity Changes in Sandstone Formation

Ahamed

Mohamed

Yusof

et al. 2021

JPGT

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Carbon dioxide, CO2 emissions have risen precipitously over the last century, wreaking havoc on the atmosphere. Carbon Capture and Sequestration (CCS) techniques are being used to inject as much CO2 as possible and meet emission reduction targets with the fewest number of wells possible for economic reasons. However, CO2 injectivity is being reduced in sandstone formations due to significant CO2-brine-rock interactions in the form of salt precipitation and fines migration. The purpose of this project is to develop a regression model using linear regression and neural networks to correlate the combined effect of fines migration and salt precipitation on CO2 injectivity as a function of injection flow rates, brine salinities, particle sizes, and particle concentrations. Statistical analysis demonstrates that the neural network model has a reliable fit of 0.9882 in R Square and could be used to accurately predict the permeability changes expected during CO2 injection in sandstones.

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Section: Literature Reviewmentioning

confidence: 99%

Modeling the Combined Effect of Salt Precipitation and Fines Migration on CO2 Injectivity Changes in Sandstone Formation

Ahamed

Mohamed

Yusof

et al. 2021

JPGT

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“…Two coal samples collected from Australia CBM fields are investigated [4,5], the permeability dropped significantly (by 60.9% and 85%, respectively for Sample 1 and Sample 2) in the water flooding process, followed by gradual decline with time, even if the differential pressure increased. The variations in coal permeability can be explained by the counteraction of four phenomena [36,37]: (1) the deposition and/or plugging of coal fines in cleats, damaging the permeability (i.e., entrapped coal fines); (2) the dilation of coal cleats by increased pore pressure (or decreased effective stress), resulting in permeability enhancement; (3) the discharge of coal fines widened the cleats, causing gradual permeability growth; and (4) the unplugging, redistribution and/or recapture of coal fines due to local pressure build-up, contributing to permeability fluctuations. In phenomenon (1), the settlement of coal fines would lead to gradual permeability decline as a result of narrowed cleats, while the clogging would contribute to abrupt permeability deterioration due to closure of cleats.…”

Section: Analysis Of Permeability Variationmentioning

confidence: 99%

Experimental Investigation of the Impact of Coal Fines Migration on Coal Core Water Flooding

et al. 2018

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Coalbed Methane (CBM) has become an important gas resource in recent decades. The brittle property of coal matrix and overactive operation make the migration of coal fines inevitable. Blockage by coal fines that plugs flow paths is a non-negligible issue that results in a significant decline in gas production. By setting different experimental conditions with the following factors—coal fines concentration of the mixture displacing fluids, constant flow pump rate, inlet pressure, outlet pressure and confining pressure—six experimental schemes were designed to investigate the two-phase water and coal fines flow in natural core samples. When the differential pressure and flooding flow reach a pseudo-steady status, the equivalent permeability of coal samples can be approximately calculated considering coal fines migration. Furthermore, the influences of coal fines migration on the cleat opening and permeability variation are analyzed in the porous coal medium. The study will benefit CBM development and save pump maintenance costs. In this work, we found that maintaining the differential pressure for a longer period may result in new cleat openings and severe coal rock damage during the single-phase water flooding process. While coal fines may plug some natural cleats and pores, especially in the core samples with micro-cleats during the two-phase flooding stage, coal fines migration significantly reduces the equivalent permeability and dewatering ability of the coal rock in the earlier flooding. While enlarging the differential pressure in two-phase water and fines flooding, breakthrough of coal fines from the samples contributes to widened cleats. While coal fines are difficult to flood into the core pores for low-permeability core samples, coal fines gather in the inlet, and it is also difficult to reach the pseudo-steady status even under higher differential pressure. The damage to permeability mainly occurs in the early stage of coal fines migration, and an abrupt increase in the flow velocity can damage reservoirs and induce substantial coal fines generation. Thus, maintaining a stable effective strength and a controlled depressurization rate during drainage can effectively constrain coal fines output and decrease permeability damage within coal reservoirs.

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“…The pick-up, migration, deposition, and clogging of fine particles in porous media are frequently encountered phenomena in different engineering fields [ 1 ]. These applications include the injection of zero valence iron (ZVI) particles for environmental remediation [ 1 , 2 , 3 , 4 ], grouting [ 5 ], the piping failure of earthen dams [ 6 ], clogging and particle loss at the interface of the capillary break layer (coarse-grained layer) and moisture-retaining layer (fine-grained particles) in a cover system for blocking the ingress of oxygen and meteoric water into waste landfill [ 7 ], the clogging of sandstone in methane hydrate exploration [ 8 ], the movement of clay particles in rock and soil reducing the efficiency of oil recovery [ 9 , 10 , 11 , 12 , 13 ], the propping of fractures in hydraulic fracking [ 14 , 15 ], and the geological sequestration of CO 2 [ 16 , 17 ]. ZVI particle injection has been proposed to remove heavy metals, organochlorine, and other contaminants in groundwater and soils [ 1 , 2 , 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel

et al. 2022

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The pick-up, migration, deposition, and clogging behaviors of fine particles are ubiquitous in many engineering applications, including contaminant remediation. Deposition and clogging are detrimental to the efficiency of environmental remediation, and their mechanisms are yet to be elucidated. Two-dimensional microfluidic models were developed to simulate the pore structure of porous media with unified particle sizes in this study. Kaolin and bentonite suspensions were introduced to microfluidic chips to observe their particle deposition and clogging behaviors. Interactions between interparticle forces and particle velocity profiles were investigated via computational fluid dynamics and discrete element method simulations. The results showed that (1) only the velocity vector toward the micropillars and drag forces in the reverse direction were prone to deposition; (2) due to the negligible weight of particles, the Stokes number implied that inertia was not the controlling factor causing deposition; and (3) the salinity of the carrying fluid increased the bentonite deposition because of the shrinkage of the diffused electrical double layer and an increase in aggregation force, whereas it had little effect on kaolin deposition.

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Fines migration during supercritical CO2 injection in sandstone

Cited by 64 publications

References 52 publications

Modeling the Combined Effect of Salt Precipitation and Fines Migration on CO2 Injectivity Changes in Sandstone Formation

Modeling the Combined Effect of Salt Precipitation and Fines Migration on CO2 Injectivity Changes in Sandstone Formation

Experimental Investigation of the Impact of Coal Fines Migration on Coal Core Water Flooding

The Migration and Deposition Behaviors of Montmorillonite and Kaolinite Particles in a Two-Dimensional Micromodel

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