Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer

Abstract In a previous study, we developed a synthetic hydrophobically modified hydroxyethyl cellulose (HEC) using bromododecane (BD), which we denote as BD-HMHEC. In this work, we continually investigate the rheological properties and its oil displacement efficiency in PuTao well area in Daqing oil...

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Autores principales:	Pengcheng Liu, Zhenbao Mu, Chao Wang, Yanling Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8bb38177e16340b894bc6129b65b6af5
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spelling	oai:doaj.org-article:8bb38177e16340b894bc6129b65b6af52021-12-02T16:06:08ZExperimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer10.1038/s41598-017-09057-92045-2322https://doaj.org/article/8bb38177e16340b894bc6129b65b6af52017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09057-9https://doaj.org/toc/2045-2322Abstract In a previous study, we developed a synthetic hydrophobically modified hydroxyethyl cellulose (HEC) using bromododecane (BD), which we denote as BD-HMHEC. In this work, we continually investigate the rheological properties and its oil displacement efficiency in PuTao well area in Daqing oilfields, China. Results show that BD-HMHEC solution has good viscosification, thermal-resistance, salt-tolerance, shear resistance, and acid/alkali resistance. The storage modulus (G’) and the loose modulus (G”) of the BD-HMHEC solutions increase significantly with increasing BD-HMHEC concentration, and the solution becomes viscoelastic at a sufficiently high BD-HMHEC concentration. The core flooding results showed BD-HMHEC flooding improves oil recovery by 7–14% in comparison with HEC flooding at concentrations of 4,000 mg/L under equivalent conditions. Moreover, BD-HMHEC flooding improves oil recovery by 7–8% after conducting water and hydrolyzed polyacrylamide (HPAM) flooding. The oil displacement mechanism of BD-HMHEC solutions is discussed based on a visual evaluation. The results indicate that BD-HMHEC flooding is a feasible means for improving oil recovery after water/HPAM flooding.Pengcheng LiuZhenbao MuChao WangYanling WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Pengcheng Liu Zhenbao Mu Chao Wang Yanling Wang Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer
description	Abstract In a previous study, we developed a synthetic hydrophobically modified hydroxyethyl cellulose (HEC) using bromododecane (BD), which we denote as BD-HMHEC. In this work, we continually investigate the rheological properties and its oil displacement efficiency in PuTao well area in Daqing oilfields, China. Results show that BD-HMHEC solution has good viscosification, thermal-resistance, salt-tolerance, shear resistance, and acid/alkali resistance. The storage modulus (G’) and the loose modulus (G”) of the BD-HMHEC solutions increase significantly with increasing BD-HMHEC concentration, and the solution becomes viscoelastic at a sufficiently high BD-HMHEC concentration. The core flooding results showed BD-HMHEC flooding improves oil recovery by 7–14% in comparison with HEC flooding at concentrations of 4,000 mg/L under equivalent conditions. Moreover, BD-HMHEC flooding improves oil recovery by 7–8% after conducting water and hydrolyzed polyacrylamide (HPAM) flooding. The oil displacement mechanism of BD-HMHEC solutions is discussed based on a visual evaluation. The results indicate that BD-HMHEC flooding is a feasible means for improving oil recovery after water/HPAM flooding.
format	article
author	Pengcheng Liu Zhenbao Mu Chao Wang Yanling Wang
author_facet	Pengcheng Liu Zhenbao Mu Chao Wang Yanling Wang
author_sort	Pengcheng Liu
title	Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer
title_short	Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer
title_full	Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer
title_fullStr	Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer
title_full_unstemmed	Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer
title_sort	experimental study of rheological properties and oil displacement efficiency in oilfields for a synthetic hydrophobically modified polymer
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8bb38177e16340b894bc6129b65b6af5
work_keys_str_mv	AT pengchengliu experimentalstudyofrheologicalpropertiesandoildisplacementefficiencyinoilfieldsforasynthetichydrophobicallymodifiedpolymer AT zhenbaomu experimentalstudyofrheologicalpropertiesandoildisplacementefficiencyinoilfieldsforasynthetichydrophobicallymodifiedpolymer AT chaowang experimentalstudyofrheologicalpropertiesandoildisplacementefficiencyinoilfieldsforasynthetichydrophobicallymodifiedpolymer AT yanlingwang experimentalstudyofrheologicalpropertiesandoildisplacementefficiencyinoilfieldsforasynthetichydrophobicallymodifiedpolymer
_version_	1718385100514656256

Experimental Study of Rheological Properties and Oil Displacement Efficiency in Oilfields for a Synthetic Hydrophobically Modified Polymer

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