Polymer-Alternating-Gas Simulation—A Case Study

Dong, Zhenzhen; Sun, Jianlei; Schechter, David S.

doi:10.2118/169734-ms

Cited by 26 publications

(17 citation statements)

References 23 publications

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“…Therefore, Surfactant (SAG) and Polymer Alternating Gas (PAG) combine the characteristics recently mentioned with the properties of surfactants and polymers, respectively [437]. This is the reason why these processes are also called chemically enhanced Water Alternating Gas methods [363,[438][439][440][441][442][443][444][445][446][447][448][449]. However, these are just recent developments, so it is considered that further research must be carried out in the laboratory as well as in field pilot tests to validate the results obtained so far.…”

Section: Chemical Eor Combined Techniquesmentioning

confidence: 99%

Chemical enhanced oil recovery and the role of chemical product design

2019

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Section: Chemical Eor Combined Techniquesmentioning

confidence: 99%

Chemical enhanced oil recovery and the role of chemical product design

2019

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“…Oil Recovery factor for 5 cases of flooding homogeneous reservoir with 800 mD, the PAG was giving additional 7.5% oil RF compared to CO 2 -WAG flooding of 7-15%[11].…”

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confidence: 91%

“…For all the previous -mentioned reasons, CO 2 -WAG approach was subjected to enhancement by chemicals such as; surfactants, polymers, nanoparticles [10,11]. Polymer was proposed to overcome the problems of gas breakthroughs and gravity segregation by using polymers.…”

Section: Introductionmentioning

confidence: 99%

“…In the second case study, they compared the effect of several flooding scenarios including CO 2 injection, WAG, polymer flooding and PAG. Although, the polymer concentration was reduced, additional oil RF of 12% was obtained [11]. However, the study was limited in demonstrating the influence of each scenario on gas production, water production and residual oil saturation.…”

Section: Introductionmentioning

confidence: 99%

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Comparative numerical study for polymer alternating gas (PAG) flooding in high permeability condition

et al. 2020

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Polymers have been used in water alternative gas, to viscosify the water and improve the overall sweep efficiency. The use of polymer alternative gas was successful in increasing the oil production in high permeability zones. However, few practical factors affecting the field applicability have been overlooked. Therefore, this study is aimed at bridging the gap between the possibility of using several EOR such as water flooding, CO 2 flooding, water alternative gas, polymer flooding and polymer alternative gas. The research based on progressive comparison considering constant constraint. The numerical simulation STARS-CMG was used to predict the characteristics and behaviour of the fluid in the reservoir. The designed flooding pattern chosen was a single producer-single injection (P-I) scheme in homogeneous high permeable reservoir. The results of oil incremental recovery showed the following order compared to Water flooding < (3%) CO 2 flooding < (6.8%) < Water alternative gas (11.6%) Polymer flooding < (15%) Polymer alternative gas. The impact of polymer on enhancing the water alternative gas was mostly noticeable in the reduction of water cut% (83%). The controlled conformance by polymer aided in improving the sweep efficiency as indicated by the uninform U-shape. Moreover, the delayed gas breakthrough was significant and resulted in the lowest gas oil ratio of 5.17E + 04 ft3/bbl. The low gas oil ratio observation is indication of potential capturing of CO 2 in the reservoir and thus, good evidence to further implementation of CO 2 as green utilization.

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“…In order to enable polymer expected role to control the mobility ratio, the polymer is always used with another EOR method like Polymer-Alternating Gas (PAG) method, surfactant-polymer flooding, Alkali-Surfactant-Polymer (ASP) flooding, etc. [6]. In the EOR polymersflood, the Hydrolyzed PolyAcrylaMide (HPAM) has been widely used.…”

Section: Introductionmentioning

confidence: 99%

Analytical solutions of polymer transport in porous media under magnetic effect

El-Amin

2020

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

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The analytical solution is helpful for understanding the mechanism and physical impacts and validating a numerical method through the model issue. This paper is devoted to developing analytical solutions for the problem of magnetic polymer transport in porous media. The mathematical model has been firstly developed then the analytical solutions have been obtained. The magnetization is treated as a nonlinear function of the magnetic field strength. The effects of the parameters of magnetic/polymer/rock on the polymer concentration, pressure and velocity have been investigated. It was found that the magnetization enhances velocity and concentration; and has a significant effect on concentration for high permeabilities. Also, it was found that for high permeabilities the advection dominates, but for lower permeabilities the diffusion dominates. As the adsorption rate increases the polymer solution concentration decreases.

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Polymer-Alternating-Gas Simulation—A Case Study

Cited by 26 publications

References 23 publications

Chemical enhanced oil recovery and the role of chemical product design

Chemical enhanced oil recovery and the role of chemical product design

Comparative numerical study for polymer alternating gas (PAG) flooding in high permeability condition

Analytical solutions of polymer transport in porous media under magnetic effect

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