Organic bases as additives for steam-assisted gravity drainage

Abstract Steam-assisted gravity drainage (SAGD) is a mature technology for bitumen recovery from oil sands. However, it is an energy-intensive process that requires large amounts of steam to heat and mobilize bitumen. The purpose of this work is to develop ways to enhance SAGD performance through th...

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Autores principales:	Sean D. Brame, Litan Li, Biplab Mukherjee, Pramod D. Patil, Stephanie Potisek, Quoc P. Nguyen
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2019
Materias:	Heavy oil Steam flood Low interfacial tension Wettability Enhanced oil recovery Organic bases Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/a314497b72764191ad937a6bce6e4777
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spelling	oai:doaj.org-article:a314497b72764191ad937a6bce6e47772021-12-02T11:17:50ZOrganic bases as additives for steam-assisted gravity drainage10.1007/s12182-019-0341-71672-51071995-8226https://doaj.org/article/a314497b72764191ad937a6bce6e47772019-06-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-0341-7https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Steam-assisted gravity drainage (SAGD) is a mature technology for bitumen recovery from oil sands. However, it is an energy-intensive process that requires large amounts of steam to heat and mobilize bitumen. The purpose of this work is to develop ways to enhance SAGD performance through the use of organic base additives. The research is approached from three focus areas that supplement and guide each other: characterization tests, sand-pack floods, and computational simulation. A number of key mechanisms for enhancing oil recovery were identified, high-temperature additive characterization tests were developed, and promising alkalis were tested in porous media. Simulation was employed to history-match sand-pack flood production data, in order to demonstrate the effect of an additive on the oil–water relative permeability. Based on these results, it was concluded that oxygenated organic bases had the most potential for improving bitumen recovery through reducing the oil–water interfacial tension (IFT) by increasing the pH of the system. These organic bases favorably modify the interfacial energies between the immiscible oil–water phases and enable them to flow easily through the porous media during production. Sand-pack flood tests have successfully demonstrated a 10%–15% improvement in bitumen recovery, over baseline, in the presence of IFT-reducing additives. Simulation results further showed that an IFT reduction had a positive impact on SAGD performance. This work demonstrates the potential of organic bases to improve not only SAGD, but other steam injection processes. Furthermore, a number of experimental methods were developed, tried, and tested during the course of this work.Sean D. BrameLitan LiBiplab MukherjeePramod D. PatilStephanie PotisekQuoc P. NguyenKeAi Communications Co., Ltd.articleHeavy oilSteam floodLow interfacial tensionWettabilityEnhanced oil recoveryOrganic basesScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 6, Pp 1332-1343 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Heavy oil Steam flood Low interfacial tension Wettability Enhanced oil recovery Organic bases Science Q Petrology QE420-499
spellingShingle	Heavy oil Steam flood Low interfacial tension Wettability Enhanced oil recovery Organic bases Science Q Petrology QE420-499 Sean D. Brame Litan Li Biplab Mukherjee Pramod D. Patil Stephanie Potisek Quoc P. Nguyen Organic bases as additives for steam-assisted gravity drainage
description	Abstract Steam-assisted gravity drainage (SAGD) is a mature technology for bitumen recovery from oil sands. However, it is an energy-intensive process that requires large amounts of steam to heat and mobilize bitumen. The purpose of this work is to develop ways to enhance SAGD performance through the use of organic base additives. The research is approached from three focus areas that supplement and guide each other: characterization tests, sand-pack floods, and computational simulation. A number of key mechanisms for enhancing oil recovery were identified, high-temperature additive characterization tests were developed, and promising alkalis were tested in porous media. Simulation was employed to history-match sand-pack flood production data, in order to demonstrate the effect of an additive on the oil–water relative permeability. Based on these results, it was concluded that oxygenated organic bases had the most potential for improving bitumen recovery through reducing the oil–water interfacial tension (IFT) by increasing the pH of the system. These organic bases favorably modify the interfacial energies between the immiscible oil–water phases and enable them to flow easily through the porous media during production. Sand-pack flood tests have successfully demonstrated a 10%–15% improvement in bitumen recovery, over baseline, in the presence of IFT-reducing additives. Simulation results further showed that an IFT reduction had a positive impact on SAGD performance. This work demonstrates the potential of organic bases to improve not only SAGD, but other steam injection processes. Furthermore, a number of experimental methods were developed, tried, and tested during the course of this work.
format	article
author	Sean D. Brame Litan Li Biplab Mukherjee Pramod D. Patil Stephanie Potisek Quoc P. Nguyen
author_facet	Sean D. Brame Litan Li Biplab Mukherjee Pramod D. Patil Stephanie Potisek Quoc P. Nguyen
author_sort	Sean D. Brame
title	Organic bases as additives for steam-assisted gravity drainage
title_short	Organic bases as additives for steam-assisted gravity drainage
title_full	Organic bases as additives for steam-assisted gravity drainage
title_fullStr	Organic bases as additives for steam-assisted gravity drainage
title_full_unstemmed	Organic bases as additives for steam-assisted gravity drainage
title_sort	organic bases as additives for steam-assisted gravity drainage
publisher	KeAi Communications Co., Ltd.
publishDate	2019
url	https://doaj.org/article/a314497b72764191ad937a6bce6e4777
work_keys_str_mv	AT seandbrame organicbasesasadditivesforsteamassistedgravitydrainage AT litanli organicbasesasadditivesforsteamassistedgravitydrainage AT biplabmukherjee organicbasesasadditivesforsteamassistedgravitydrainage AT pramoddpatil organicbasesasadditivesforsteamassistedgravitydrainage AT stephaniepotisek organicbasesasadditivesforsteamassistedgravitydrainage AT quocpnguyen organicbasesasadditivesforsteamassistedgravitydrainage
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Organic bases as additives for steam-assisted gravity drainage

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