Modelling of polymer retention during low concentrated HPAM polymer flooding in the heterogeneous reservoirs

Choi, ByungIn; Yu, KyungWan; Lee, Kun Sang

doi:10.1504/ijogct.2016.074771

Cited by 7 publications

(5 citation statements)

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“…Polymer flooding is a chemical enhanced oil recovery method in which water-soluble polymers with high molecular weight are added to the injection fluid to increase its viscosity and thus to reduce its mobility ratio, providing greater sweep efficiency and an increase in oil recovery. Polymer injection is considered one of the most promising EOR techniques due to its good efficiency and technical and economic viability (Choi et al, 2016;Data et al, 2018;Gbadamosi et al, 2019b;Pope, 2011;Rellegadla et al, 2017;Stavland et al, 2010).…”

Section: Polymer Floodingmentioning

confidence: 99%

“…In the class of synthetics, the highlights are Acrylamidebased polymers (AM), with Partially Hydrolyzed Polyacrylamide (PHPA) being used most for cEOR due to its low cost, excellent viscosity properties and good physicochemical characteristics (Abidin et al, 2012;Mahran et al, 2018;Stavland et al, 2010). Many research groups have conducted studies of the application of PHPA for polymer flooding (Choi et al, 2014(Choi et al, , 2016Clark et al, 2015; Gao, 2011Gao, , 2013Hashmet et al, 2014a, b;Khamis et al, 2018;Levitt et al, 2013;Manichand et al, 2013;Oliveira et al, 2019;Rostami et al, 2018b;Zhang et al, 2011a). The high viscosifying power of PHPA is directly related to its molecular weight and degree of hydrolysis, which typically ranges from 10% to 35%.…”

Section: Polymer Floodingmentioning

confidence: 99%

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Polymer viscosifier systems with potential application for enhanced oil recovery: a review

Aguiar

Palermo

Mansur

2021

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

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Due to the growing demand for oil and the large number of mature oil fields, Enhanced Oil Recovery (EOR) techniques are increasingly used to increase the oil recovery factor. Among the chemical methods, the use of polymers stands out to increase the viscosity of the injection fluid and harmonize the advance of this fluid in the reservoir to provide greater sweep efficiency. Synthetic polymers based on acrylamide are widely used for EOR, with Partially Hydrolyzed Polyacrylamide (PHPA) being used the most. However, this polymer has low stability under harsh reservoir conditions (High Temperature and Salinity – HTHS). In order to improve the sweep efficiency of polymeric fluids under these conditions, Hydrophobically Modified Associative Polymers (HMAPs) and Thermo-Viscosifying Polymers (TVPs) are being developed. HMAPs contain small amounts of hydrophobic groups in their water-soluble polymeric chains, and above the Critical Association Concentration (CAC), form hydrophobic microdomains that increase the viscosity of the polymer solution. TVPs contain blocks or thermosensitive grafts that self-assemble and form microdomains, substantially increasing the solution’s viscosity. The performance of these systems is strongly influenced by the chemical group inserted in their structures, polymer concentration, salinity and temperature, among other factors. Furthermore, the application of nanoparticles is being investigated to improve the performance of injection polymers applied in EOR. In general, these systems have excellent thermal stability and salinity tolerance along with high viscosity, and therefore increase the oil recovery factor. Thus, these systems can be considered promising agents for enhanced oil recovery applications under harsh conditions, such as high salinity and temperature. Moreover, stands out the use of genetic programming and artificial intelligence to estimate important parameters for reservoir engineering, process improvement, and optimize polymer flooding in enhanced oil recovery.

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Section: Polymer Floodingmentioning

confidence: 99%

Section: Polymer Floodingmentioning

confidence: 99%

Polymer viscosifier systems with potential application for enhanced oil recovery: a review

Aguiar

Palermo

Mansur

2021

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

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“…Miscible displacement, chemical flooding, and thermal and microbial flooding processes are common. Polymer flooding, which is a chemical flooding system is one of the most promising enhanced oil recovery techniques [8][9][10][11][12]. Whereas miscible displacement and chemical flooding are used in reservoirs with light crude oils, thermal processes are used in reservoirs with heavy crude oils and microbial processes use microorganisms to assist in oil recovery.…”

Section: Introductionmentioning

confidence: 99%

Perspective Chapter: Rheological Considerations for Drilling and Enhanced Oil Recovery Fluids

Uwaezuoke¹

2023

Advances in Rheology of Materials

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Screening of models to determine the applicability based on absolute average error is an acceptable approach. It is an appropriate model that guarantees greater accuracy in hydraulic computations. An improperly performed hydraulic calculation would cause poor hole cleaning and drilling cost overrun due to excess rig time. Also, due to inhibiting factors such as gravity, viscous and capillary forces; enhanced oil recovery had been adopted as an alternative mechanism to aid flow in the reservoir. An approach to rheological parameters and model selection is presented. Underlying mechanisms and considerations in the technology of enhanced oil recovery are presented. Rheology of drilling fluid is considered for effective hole cleaning, adequate cuttings suspension, averting barite sag, and prevention of excessive pipe surge and swab pressures. Similarly, the rheological characteristics of enhanced oil recovery fluids are monitored to retard pore blocking and prevent polymer loss during the fluid injection process. Understanding the rheology at a low shear rate range of 0.1–100 s−1 of enhanced oil recovery fluids was highlighted. Advanced rheology equipment, viscoelastic behavior, nano-rheology, and smart fluids are matters of attention.

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“…In previous research [2,7,10,11,12,13,14,15,16], polymer retention during polymer solution flow through porous media was investigated. There are three polymer retention mechanisms: polymer adsorption, mechanical entrapment, and hydrodynamic retention [17].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Hydrodynamic Retention of Low and High Molecular Weight Sulfonated Polyacrylamide Polymer

et al. 2019

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Polymers are often added with water as a viscosifier to improve oil recovery from hydrocarbon reservoirs. Polymer might be lost wholly or partially from the injected polymer solution by adsorption on the grain surfaces, mechanical entrapment in pores, and hydrodynamic retention in stagnant zones. Therefore, having a clear picture of polymer losses (and retention) is very important for designing a technically and economically successful polymer flood project. The polymer adsorption and mechanical entrapment are discussed more in depth in the literature, though the effect of hydrodynamic retention can be just as significant. This research investigates the effect of the hydrodynamic retention for low and high molecular weight (AN 113 VLM and AN 113 VHM) sulfonated polyacrylamide polymer. Two high permeability Bentheimer core plugs from outcrops were used to perform polymer corefloods. Polymer retention was first determined by injecting 1 cm3/min, followed by polymer core floods at 3, 5, and 8 cm3/min to determine the hydrodynamic retention (incremental retention). A higher molecular weight polymer (AN 113 VHM) showed higher polymer retention. In contrast, hydrodynamic retention for lower molecular weight (AN 113 VLM) was significantly higher than that of the higher molecular weight polymer. Other important observations were the reversibility of the hydrodynamic retention, no permanent permeability reduction, the shear thinning behavior in a rheometer, and shear thickening behavior in core floods.

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Modelling of polymer retention during low concentrated HPAM polymer flooding in the heterogeneous reservoirs

Cited by 7 publications

References 0 publications

Polymer viscosifier systems with potential application for enhanced oil recovery: a review

Polymer viscosifier systems with potential application for enhanced oil recovery: a review

Perspective Chapter: Rheological Considerations for Drilling and Enhanced Oil Recovery Fluids

An Experimental Study on Hydrodynamic Retention of Low and High Molecular Weight Sulfonated Polyacrylamide Polymer

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