Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound

Abstract Waterflood-assisted oil recovery with sulfate-spiked seawater would cause incompatibility scaling in carbonate reservoirs and reduce economic benefits. This research investigated the benefits of polyphosphate compounds in reducing scaling potential as well as its effect on oil recovery when...

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Autores principales:	Bisweswar Ghosh, Liying Sun, Nithin Chacko Thomas
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2019
Materias:	Incompatibility scaling Sodium trimetaphosphate (SHMP) Smart waterflood Scale inhibitor Water compatibility Enhanced oil recovery Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/4a9549fa3db543ec9739df41fcd0c2a1
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spelling	oai:doaj.org-article:4a9549fa3db543ec9739df41fcd0c2a12021-12-02T12:43:06ZCompatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound10.1007/s12182-019-00380-61672-51071995-8226https://doaj.org/article/4a9549fa3db543ec9739df41fcd0c2a12019-10-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-019-00380-6https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract Waterflood-assisted oil recovery with sulfate-spiked seawater would cause incompatibility scaling in carbonate reservoirs and reduce economic benefits. This research investigated the benefits of polyphosphate compounds in reducing scaling potential as well as its effect on oil recovery when mixed in high sulfate flood water. Severity of scaling potential of sulfate-spiked water in a carbonate reservoir environment was measured, followed by systematic screening of a polyphosphate compound, which successfully inhibited the sulfate scale precipitation at concentration as low as 100 ppm. The new formulation (seawater with four times sulfate and phosphate, SW4SP) was evaluated and compared with benchmark formulation (modified seawater with four times sulfate, SW4S). Contact angle, ζ-potential and drainage studies show that SW4SP changed the rock wettability from oil wet to water wet to a larger degree compared to SW4S. Improved recovery efficiency of SW4SP was confirmed through a set of core flooding studies in the tertiary and quaternary flood modes. Whereas SW4S recovered 7.7% of original oil in place (OOIP), SW4SP recovered about 8% of OOIP in the tertiary mode under approximately identical flow conditions. Flooding with SW4SP in the quaternary mode following a tertiary flood with SW4S on the same core resulted in 1.7% additional oil recovery, showing improved efficiency of the new flood water formulation.Bisweswar GhoshLiying SunNithin Chacko ThomasKeAi Communications Co., Ltd.articleIncompatibility scalingSodium trimetaphosphate (SHMP)Smart waterfloodScale inhibitorWater compatibilityEnhanced oil recoveryScienceQPetrologyQE420-499ENPetroleum Science, Vol 17, Iss 2, Pp 393-408 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Incompatibility scaling Sodium trimetaphosphate (SHMP) Smart waterflood Scale inhibitor Water compatibility Enhanced oil recovery Science Q Petrology QE420-499
spellingShingle	Incompatibility scaling Sodium trimetaphosphate (SHMP) Smart waterflood Scale inhibitor Water compatibility Enhanced oil recovery Science Q Petrology QE420-499 Bisweswar Ghosh Liying Sun Nithin Chacko Thomas Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound
description	Abstract Waterflood-assisted oil recovery with sulfate-spiked seawater would cause incompatibility scaling in carbonate reservoirs and reduce economic benefits. This research investigated the benefits of polyphosphate compounds in reducing scaling potential as well as its effect on oil recovery when mixed in high sulfate flood water. Severity of scaling potential of sulfate-spiked water in a carbonate reservoir environment was measured, followed by systematic screening of a polyphosphate compound, which successfully inhibited the sulfate scale precipitation at concentration as low as 100 ppm. The new formulation (seawater with four times sulfate and phosphate, SW4SP) was evaluated and compared with benchmark formulation (modified seawater with four times sulfate, SW4S). Contact angle, ζ-potential and drainage studies show that SW4SP changed the rock wettability from oil wet to water wet to a larger degree compared to SW4S. Improved recovery efficiency of SW4SP was confirmed through a set of core flooding studies in the tertiary and quaternary flood modes. Whereas SW4S recovered 7.7% of original oil in place (OOIP), SW4SP recovered about 8% of OOIP in the tertiary mode under approximately identical flow conditions. Flooding with SW4SP in the quaternary mode following a tertiary flood with SW4S on the same core resulted in 1.7% additional oil recovery, showing improved efficiency of the new flood water formulation.
format	article
author	Bisweswar Ghosh Liying Sun Nithin Chacko Thomas
author_facet	Bisweswar Ghosh Liying Sun Nithin Chacko Thomas
author_sort	Bisweswar Ghosh
title	Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound
title_short	Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound
title_full	Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound
title_fullStr	Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound
title_full_unstemmed	Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound
title_sort	compatibility evaluation of modified seawater for eor in carbonate reservoirs through the introduction of polyphosphate compound
publisher	KeAi Communications Co., Ltd.
publishDate	2019
url	https://doaj.org/article/4a9549fa3db543ec9739df41fcd0c2a1
work_keys_str_mv	AT bisweswarghosh compatibilityevaluationofmodifiedseawaterforeorincarbonatereservoirsthroughtheintroductionofpolyphosphatecompound AT liyingsun compatibilityevaluationofmodifiedseawaterforeorincarbonatereservoirsthroughtheintroductionofpolyphosphatecompound AT nithinchackothomas compatibilityevaluationofmodifiedseawaterforeorincarbonatereservoirsthroughtheintroductionofpolyphosphatecompound
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Compatibility evaluation of modified seawater for EOR in carbonate reservoirs through the introduction of polyphosphate compound

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