Effects of the capillary-entrapped phase on fines migration in porous media

Prempeh, Kofi Ohemeng Kyei; Chequer, Larissa; Badalyan, Alexander; Bedrikovetsky, Pavel

doi:10.1016/j.jngse.2019.103047

Cited by 25 publications

(7 citation statements)

References 56 publications

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“…This is because colloids can clog the pore throats of the media by accumulating at those throats and thereby reduce the permeability of the media itself (Yusof et al, 2022). Permeability reduction as a consequence of pore clogging was also observed by (Hannun et al, 2022) and (Prempeh et al, 2020), where the latter study additionally reported non-monotonic permeability reduction relative to clay content due to the residual gas phase blocking flow paths. While (Han et al, 2020) observed pore clogging at velocities beginning from over 25 mm/s and 5 mm/s for single and two-phase flows respectively using a semi-circular cylinder to examine colloid transportation under both single and two-phase flows.…”

Section: Introductionsupporting

confidence: 60%

Impact of Pore Morphology on Colloid Migration at Variable Saturation Levels of Natural Porous Media

Albaba,

Hannun,

Al-Raoush

2023

The International Conference on Civil Infrastructure and Construction

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The migration of colloids within porous media has a critical impact on many important industrial processes such as oil production and groundwater recharge. Colloids can clog the pore space and hence impair the permeability of fluids which adversely impacts the efficiency of fluids movement through such media. Therefore, understanding the mechanisms of pore clogging at the pore-scale is critical to develop efficient remediation methodologies for permeability reduction at different physio-chemical conditions. To study pore clogging at a pore-scale, microfluidic chips were fabricated to mimic geometries of natural porous media extracted from tomographic scans of sand packs. A colloidal suspension was injected in three phases into the system. The phases consisted of an initial imbibition of the suspension, followed by drainage of the suspension from the system, and finally, a second imbibition. During each phase, a series of images are taken of a section of the porous media. Findings reveal that pore-clogging considerably impairs saturation levels of the porous media through blocking the flow from reaching the gas phase within the system. Considerably increasing the time the gas is trapped in the pore-space, which in turn develops higher irreducible water saturation. This was also observed in the case of drainage of the colloidal suspension from the pore-space where colloids blocked pathways of the gas phase and prevented its migration through the pore space. In contrast, the migration of colloids was also impacted by the presence of the gas phase. Gas provided a clogging surface while forcing colloids to migrate through the pore space and accumulate at other pores. This implies that gas phase presence within a low porosity system can increase pore clogging at a significant rate. This is also supported by the short period between the clogging of two pores and the clogging of a dozen pores within the observed system.

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Section: Introductionsupporting

confidence: 60%

Impact of Pore Morphology on Colloid Migration at Variable Saturation Levels of Natural Porous Media

Albaba,

Hannun,

Al-Raoush

2023

The International Conference on Civil Infrastructure and Construction

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“…It can be seen from this gure that increasing pore volume injection increases the kaolinite nes concentration and after some time, the concentration of kaolinite nes tend to decrease. The decline in the nes concentration is attributed to permeability damage by kaolinite nes straining (Prempeh et al 2020;Kanimozhi et al 2019a;Russell et al 2017) and structural collapse as well . The performance of brine is relatively higher than that of the supercritical carbon dioxide.…”

Section: Coal Fines Velocity and Fines Concentrationmentioning

confidence: 99%

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

Rajkumar

Antony

Mahalingam³

et al. 2020

Preprint

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A laboratory based investigation has been conducted on permeability damage and CO2 storage or retention in the lignite core during alternative injection of brine and supercritical carbon dioxide. Moreover, anthracite and bituminous coal beds were focused by the scientific community for effective production and reservoir formation damage study. But, now-a-days, lignite based coal bed methane reservoirs have attracted attention for productive exploitation and formation collapse investigation. Hence, for this purpose, a single component injection two phase (Brine + Supercritical CO2) coreflood test analysis under alternative injections were performed to investigate the occurrence of lignite structural collapse, permeability damage, injectivity decline and CO2 retention as well. The experimental study reveals that, due to gravity segregation there is a high rate of fluid saturation in lignite core and also, moderate level of heat transfer coefficient was also noted. Also, lignite core structural collapse under the brine and supercritical CO2 injection at different velocities resulted in huge volume of coal and kaolinite fines concentration. Kaolinite and coal fines migration resulted in pressure change and permeability decline in lignite core. The suspensions produced were passed to microstructural analysis and it revealed that kaolinite fine particle tends to possess a leaflet geometrical structure, which obstructed the cleats and restricted the fluid flow. Subsequently, hysteresis modelling (Pranesh 2018) was applied to this problem to quantify the amount of CO2 retention in lignite core. Additionally, statistical model, multiple linear regression was applied to this problem to validate the experimental model, which showed good agreement.

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“…Although this is dependent on the reservoir geology during the sedimentation process and type of injected surface-active chemicals surfactants, loose rock fine grains can affect reservoir rock permeability performance. Prempeh et al [8] examined the effect of aqueous salinity water with different ionic strengths and fresh water on fines migration in the laboratory using sand-packs that contain different percentage of kaolinite and residual oil. They suggested that loose natural reservoir kaolinite fines can occur under decreasing water salinity, and their migration and retention within the porous media affect rock permeability.…”

Section: Introductionmentioning

confidence: 99%

Effect of Produced Sand Particles and Fines on Scale Inhibitor: A Review

Anyanwu

Oluyemi

2021

Colloids and Interfaces

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Application of scale inhibitors in oil and gas production is aimed at mitigating scale blockage during production. Many experimental, mathematical, and numerical simulation modeling works have been carried out to evaluate behavior, performance, and interaction of the scale inhibitor chemicals within porous media in relation to their efficiency in solving scale problem. However, the mechanisms underpinning scale inhibitors performance are not well published. Some research works have shown theoretically that not all scale inhibitors pumped into the formation adsorb onto the formation rock. Some of the inhibitors may adsorb on produced loose sand grains or colloidal fine sand particles which float and flow within the pore spaces along with the scale inhibitor mostly in unconsolidated reservoirs This paper provides a review of research work on the effect of produced loose sand or colloidal fine particles flow on polyphosphonates and polyphosphinopolymer scale inhibitors performances during crude production.

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Effects of the capillary-entrapped phase on fines migration in porous media

Cited by 25 publications

References 56 publications

Impact of Pore Morphology on Colloid Migration at Variable Saturation Levels of Natural Porous Media

Impact of Pore Morphology on Colloid Migration at Variable Saturation Levels of Natural Porous Media

Permeability Damage and Supercritical Fluid Storage in the Cauvery Basin Neyveli Lignite Bed Containing Kaolinite Deposits during Alternative Injection of Brine and CO2

Effect of Produced Sand Particles and Fines on Scale Inhibitor: A Review

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