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Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs

[Image: see text] Chemical flooding is an effective method to enhance heavy oil recovery, and the viscosity reducer is often injected into the formation as the main reagent of chemical flooding. In the paper, a novel polymer viscosity reducer (FMP) was used to inject into a visual filling model, whi...

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Autores principales: Li, Yu, Liu, Huiqing, Wang, Qing, Dong, Xiaohu, Chen, Xin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482495/
https://www.ncbi.nlm.nih.gov/pubmed/34604648
http://dx.doi.org/10.1021/acsomega.1c03366
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author Li, Yu
Liu, Huiqing
Wang, Qing
Dong, Xiaohu
Chen, Xin
author_facet Li, Yu
Liu, Huiqing
Wang, Qing
Dong, Xiaohu
Chen, Xin
author_sort Li, Yu
collection PubMed
description [Image: see text] Chemical flooding is an effective method to enhance heavy oil recovery, and the viscosity reducer is often injected into the formation as the main reagent of chemical flooding. In the paper, a novel polymer viscosity reducer (FMP) was used to inject into a visual filling model, which can simulate the reservoir. The mechanism of enhancing heavy oil recovery by FMP is studied by macroscopic and microscopic analysis methods. The model can obtain macroscopic images and production data, including pressure, water cut, and oil recovery. The model can observe some microscopic processes, which can analyze the mechanism of enhanced oil recovery. Five processes of emulsifying viscosity reduction are summarized by using microscopic images: membrane oil removal, gradual emulsification, flocculation into droplet groups, active dispersion, and agglomeration into droplets. The FMP molecules can affect the interfacial properties of oil, water, and rock to enhance the wishing oil efficiency. Moreover, the decrease in the stability of the oil–water interface leads to flocculation into droplet groups and agglomeration into droplets occurring at the throat of the strong seepage zone, which increases the sweep coefficient from 0.56 to 0.90. The oil recovery has increased from 18 to 34%, which indicates that the FMP flooding obviously enhances the effect of heavy oil reservoir development.
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spelling pubmed-84824952021-10-01 Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs Li, Yu Liu, Huiqing Wang, Qing Dong, Xiaohu Chen, Xin ACS Omega [Image: see text] Chemical flooding is an effective method to enhance heavy oil recovery, and the viscosity reducer is often injected into the formation as the main reagent of chemical flooding. In the paper, a novel polymer viscosity reducer (FMP) was used to inject into a visual filling model, which can simulate the reservoir. The mechanism of enhancing heavy oil recovery by FMP is studied by macroscopic and microscopic analysis methods. The model can obtain macroscopic images and production data, including pressure, water cut, and oil recovery. The model can observe some microscopic processes, which can analyze the mechanism of enhanced oil recovery. Five processes of emulsifying viscosity reduction are summarized by using microscopic images: membrane oil removal, gradual emulsification, flocculation into droplet groups, active dispersion, and agglomeration into droplets. The FMP molecules can affect the interfacial properties of oil, water, and rock to enhance the wishing oil efficiency. Moreover, the decrease in the stability of the oil–water interface leads to flocculation into droplet groups and agglomeration into droplets occurring at the throat of the strong seepage zone, which increases the sweep coefficient from 0.56 to 0.90. The oil recovery has increased from 18 to 34%, which indicates that the FMP flooding obviously enhances the effect of heavy oil reservoir development. American Chemical Society 2021-09-13 /pmc/articles/PMC8482495/ /pubmed/34604648 http://dx.doi.org/10.1021/acsomega.1c03366 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Li, Yu
Liu, Huiqing
Wang, Qing
Dong, Xiaohu
Chen, Xin
Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs
title Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs
title_full Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs
title_fullStr Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs
title_full_unstemmed Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs
title_short Visual Filling Model Experiment Study on the Enhanced Oil Recovery Mechanism of Novel Polymer Viscosity Reducer Flooding in Heavy Oil Reservoirs
title_sort visual filling model experiment study on the enhanced oil recovery mechanism of novel polymer viscosity reducer flooding in heavy oil reservoirs
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8482495/
https://www.ncbi.nlm.nih.gov/pubmed/34604648
http://dx.doi.org/10.1021/acsomega.1c03366
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