Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs

Abstract Although low salinity water injection (LSWI) has recovered residual oil after the conventional waterflood, highly viscous oil has remained in heavy oil reservoirs. Hot water injection is an economic and practical method to improve oil mobility for viscous oil reservoirs. It potentially cont...

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Autores principales: Ji Ho Lee, Kun Sang Lee
Formato: article
Lenguaje:EN
Publicado: KeAi Communications Co., Ltd. 2018
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Acceso en línea:https://doaj.org/article/49f23f1344a745c2b5c49e27382b640f
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spelling oai:doaj.org-article:49f23f1344a745c2b5c49e27382b640f2021-12-02T10:45:27ZGeochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs10.1007/s12182-018-0274-61672-51071995-8226https://doaj.org/article/49f23f1344a745c2b5c49e27382b640f2018-11-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0274-6https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Although low salinity water injection (LSWI) has recovered residual oil after the conventional waterflood, highly viscous oil has remained in heavy oil reservoirs. Hot water injection is an economic and practical method to improve oil mobility for viscous oil reservoirs. It potentially controls temperature-dependent geochemical reactions underlying the LSWI mechanism and oil viscosity. Therefore, this study has modeled and evaluated a hybrid process of low salinity hot water injection (hot LSWI) to quantify synergistic effects in heavy oil reservoirs. In comparison to seawater injection (SWI) and LSWI, hot LSWI results in more cation ion-exchange (Ca2+ and Mg2+) and more wettability modification. Hot LSWI also reduces oil viscosity. In core-scaled systems, it increases oil recovery by 21% and 6% over SWI and LSWI. In a pilot-scaled reservoir, it produces additional oil by 6% and 3% over SWI and LSWI. Probabilistic forecasting with uncertainty assessment further evaluates the feasibility of hot LSWI to consider uncertainty in the pilot-scaled reservoir and observes enhanced heavy oil production. This study confirms the viability of hot LSWI due to synergistic effects including enhanced wettability modification and oil viscosity reduction effects.Ji Ho LeeKun Sang LeeKeAi Communications Co., Ltd.articleLow salinity water injectionHot water injectionWettability modificationGeochemical reactionViscosity reductionScienceQPetrologyQE420-499ENPetroleum Science, Vol 16, Iss 2, Pp 366-381 (2018)
institution DOAJ
collection DOAJ
language EN
topic Low salinity water injection
Hot water injection
Wettability modification
Geochemical reaction
Viscosity reduction
Science
Q
Petrology
QE420-499
spellingShingle Low salinity water injection
Hot water injection
Wettability modification
Geochemical reaction
Viscosity reduction
Science
Q
Petrology
QE420-499
Ji Ho Lee
Kun Sang Lee
Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
description Abstract Although low salinity water injection (LSWI) has recovered residual oil after the conventional waterflood, highly viscous oil has remained in heavy oil reservoirs. Hot water injection is an economic and practical method to improve oil mobility for viscous oil reservoirs. It potentially controls temperature-dependent geochemical reactions underlying the LSWI mechanism and oil viscosity. Therefore, this study has modeled and evaluated a hybrid process of low salinity hot water injection (hot LSWI) to quantify synergistic effects in heavy oil reservoirs. In comparison to seawater injection (SWI) and LSWI, hot LSWI results in more cation ion-exchange (Ca2+ and Mg2+) and more wettability modification. Hot LSWI also reduces oil viscosity. In core-scaled systems, it increases oil recovery by 21% and 6% over SWI and LSWI. In a pilot-scaled reservoir, it produces additional oil by 6% and 3% over SWI and LSWI. Probabilistic forecasting with uncertainty assessment further evaluates the feasibility of hot LSWI to consider uncertainty in the pilot-scaled reservoir and observes enhanced heavy oil production. This study confirms the viability of hot LSWI due to synergistic effects including enhanced wettability modification and oil viscosity reduction effects.
format article
author Ji Ho Lee
Kun Sang Lee
author_facet Ji Ho Lee
Kun Sang Lee
author_sort Ji Ho Lee
title Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
title_short Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
title_full Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
title_fullStr Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
title_full_unstemmed Geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
title_sort geochemical evaluation of low salinity hot water injection to enhance heavy oil recovery from carbonate reservoirs
publisher KeAi Communications Co., Ltd.
publishDate 2018
url https://doaj.org/article/49f23f1344a745c2b5c49e27382b640f
work_keys_str_mv AT jiholee geochemicalevaluationoflowsalinityhotwaterinjectiontoenhanceheavyoilrecoveryfromcarbonatereservoirs
AT kunsanglee geochemicalevaluationoflowsalinityhotwaterinjectiontoenhanceheavyoilrecoveryfromcarbonatereservoirs
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