Enhanced oil recovery mechanisms of polymer flooding in a heterogeneous oil reservoir

Lu, Xiaofeng; Bao, Cao; Xie, Kongliang; Cao, Weijia; Liu, Yigang; Zhang, Yunbao; Wang, Xiaoyan; Zhang, Jie

doi:10.1016/s1876-3804(21)60013-7

Cited by 101 publications

(40 citation statements)

References 12 publications

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“…The water-wet experimental cores were made of quartz sand, curing agent phenolic, ordinary epoxy resin, as well as modified water-wet epoxy resin with modifier polyethylene glycol, propylene glycol methyl ether, and ammonium persulfate which was similar to the wettability of extralowpermeability reservoir in Dagang Oilfield [31][32][33][34]. Cylindrical cores and plate-fractured models were used in experiments.…”

Section: Methodsmentioning

confidence: 99%

Experimental Investigation on Cyclic Huff-n-Puff with Surfactants Based on Complex Fracture Networks in Water-Wet Oil Reservoirs with Extralow Permeability

Bao

Tian

et al. 2021

Geofluids

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The injection from a well to other wells can be difficult in extralow-permeability oil reservoirs. In order to address this issue, a method of cyclic huff-n-puff with surfactants based on complex fracture networks for a single horizontal well was proposed and then investigated in terms of the effects of injection and fracture parameters on the oil recovery in water-wet extralow-permeability models. Firstly, the interfacial tension (IFT) and contact angle with different surfactant concentrations were measured to determine the basic properties of the surfactants. Then, the experiments of huff-n-puff with surfactants at different threshold injection pressures and soaking time were carried out to determine the oil increasing effects and analyze the pore-scale (micropores, mesopores, and macropores) mechanisms by combining the technology of nuclear magnetic resonance (NMR), which showed that the recovery increased with threshold injection pressure mostly in mesopores and macropores, while that increased with soaking time mostly in micropores. Eventually, the experiments of cyclic huff-n-puff based on different fracture distributions were conducted in six plate-fractured models to investigate the effects of surfactants, primary fracture, and secondary fracture on each cycle of huff-n-puff. Cyclic huff-n-puff with surfactants assisted by complex fracture networks including both primary and secondary fractures would bring to a higher oil recovery. However, other methods should be taken after several cycles of huff-n-puff due to the rapid reduction of oil recovery of each cycle. The findings for the proposed method should provide a meaningful guide to the development of extralow-permeability oil reservoirs.

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Section: Methodsmentioning

confidence: 99%

Experimental Investigation on Cyclic Huff-n-Puff with Surfactants Based on Complex Fracture Networks in Water-Wet Oil Reservoirs with Extralow Permeability

Bao

Tian

et al. 2021

Geofluids

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“…These polymers are non-Newtonian (also called pseudoplastic) fluids because their viscosities are a function of the shear rate. They usually are used with surfactants and alkali agents to increase the sweep efficiency of the tertiary recovery floods [115][116][117]. It is important to select the appropriate polymer for a given area.…”

Section: Oil and Gas Applicationsmentioning

confidence: 99%

Recent Advances in Functional Polymer Materials for Energy, Water, and Biomedical Applications: A Review

et al. 2021

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Academic research regarding polymeric materials has been of great interest. Likewise, polymer industries are considered as the most familiar petrochemical industries. Despite the valuable and continuous advancements in various polymeric material technologies over the last century, many varieties and advances related to the field of polymer science and engineering still promise a great potential for exciting new applications. Research, development, and industrial support have been the key factors behind the great progress in the field of polymer applications. This work provides insight into the recent energy applications of polymers, including energy storage and production. The study of polymeric materials in the field of enhanced oil recovery and water treatment technologies will be presented and evaluated. In addition, in this review, we wish to emphasize the great importance of various functional polymers as effective adsorbents of organic pollutants from industrial wastewater. Furthermore, recent advances in biomedical applications are reviewed and discussed.

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“…The traditional way to study enhanced oil recovery is by studying core flooding [ 9 , 10 , 11 , 12 ]. Core flooding provides some information about the kinetics and amount of extracted oil.…”

Section: Introductionmentioning

confidence: 99%

Microfluidic Study of the Effect of Nanosuspensions on Enhanced Oil Recovery

et al. 2022

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The essential advantages of microfluidic studies are the excellent visualization of the processes of oil displacement from the porous medium model, simple cleaning, and the possibility of the repeated use of the microfluidic chip. The present article deals with the process of oil displacement by suspension flooding using a microfluidic chip, simulating a porous medium, and the suspensions of silicon dioxide nanoparticles (22 nm). The mass concentration of nanoparticles in suspensions ranged from 0.1 to 2 wt%. Five mass concentrations (0.125 wt%, 0.25 wt%, 0.5 wt%, 1 wt% and 2 wt%) were considered. The article presents the experimental photographs of the oil displacement process by water and SiO2 suspension. It is shown that, with the increasing concentration of nanoparticles, the oil recovery factor increases. A significant effect is observed at 0.5 wt% concentration of nanoparticles. It is shown that the increase in oil recovery during flooding by SiO2 suspension with the maximum concentration was 16%.

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Enhanced oil recovery mechanisms of polymer flooding in a heterogeneous oil reservoir

Cited by 101 publications

References 12 publications

Experimental Investigation on Cyclic Huff-n-Puff with Surfactants Based on Complex Fracture Networks in Water-Wet Oil Reservoirs with Extralow Permeability

Experimental Investigation on Cyclic Huff-n-Puff with Surfactants Based on Complex Fracture Networks in Water-Wet Oil Reservoirs with Extralow Permeability

Recent Advances in Functional Polymer Materials for Energy, Water, and Biomedical Applications: A Review

Microfluidic Study of the Effect of Nanosuspensions on Enhanced Oil Recovery

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