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dc.contributor.author
Zimmermann, Udo
dc.contributor.author
Madland, Merete Vadla
dc.contributor.author
Nermoen, Anders
dc.contributor.author
Hildebrand Habel, Tania
dc.contributor.author
Bertolino, Silvana Raquel Alina
dc.contributor.author
Hiorth, Aksel
dc.contributor.author
Korsnes, Reidar I.
dc.contributor.author
Audinot, Jean-Nicolas
dc.contributor.author
Grysan, Patrick
dc.date.available
2018-03-23T19:58:47Z
dc.date.issued
2015-05
dc.identifier.citation
Zimmermann, Udo; Madland, Merete Vadla; Nermoen, Anders; Hildebrand Habel, Tania; Bertolino, Silvana Raquel Alina; et al.; Evaluation of the compositional changes during flooding of reactive fluids using scanning electron microscopy, nano-secondary ion mass spectrometry, x-ray diffraction, and whole-rock geochemistry; American Association of Petroleum Geologists; AAPG Bulletin; 99; 5; 5-2015; 791-805
dc.identifier.issn
0149-1423
dc.identifier.uri
http://hdl.handle.net/11336/39852
dc.description.abstract
Outcrop chalk of late Campanian age (Gulpen Formation) from Liège (Belgium) was flooded with MgCl2 in a triaxial cell for 516 days under reservoir conditions to understand how the nonequilibrium nature of the fluids altered the chalks. The study is motivated by enhanced oil recovery (EOR) processes because dissolution and precipitation change the way in which oils are trapped in chalk reservoirs. Relative to initial composition, the first centimeter of the flooded chalk sample shows an increase in MgO by approximately 100, from a weight percent of 0.33% to 33.03% and a corresponding depletion of CaO by more than 70% from 52.22 to 14.43 wt.%. Except for Sr, other major or trace elements do not show a significant change in concentration. Magnesite was identified as the major newly grown mineral phase. At the same time, porosity was reduced by approximately 20%. The amount of Cl- in the effluent brine remained unchanged, whereas Mg2+ was depleted and Ca2+ enriched. The loss of Ca2+ and gain in Mg2+ are attributed to precipitation of new minerals and leaching the tested core by approximately 20%, respectively. Dramatic mineralogical and geochemical changes are observed with scanning electron microscopyenergy-dispersive x-ray spectroscopy, nano secondary ion mass spectrometry, x-ray diffraction, and whole-rock geochemistry techniques. The understanding of how fluids interact with rocks is important to, for example, EOR, because textural changes in the pore space affect how water will imbibe and expel oil from the rock. The mechanisms of dissolution and mineralization of fine-grained chalk can be described and quantified and, when understood, offer numerous possibilities in the engineering of carbonate reservoirs.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Association of Petroleum Geologists
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Oil Recovery
dc.subject
Flooded Chalk
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Nano-Sims
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Geochemistry
dc.subject.classification
Ingeniería del Petróleo, Energía y Combustibles
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Ingeniería del Medio Ambiente
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INGENIERÍAS Y TECNOLOGÍAS
dc.title
Evaluation of the compositional changes during flooding of reactive fluids using scanning electron microscopy, nano-secondary ion mass spectrometry, x-ray diffraction, and whole-rock geochemistry
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-02T14:18:43Z
dc.journal.volume
99
dc.journal.number
5
dc.journal.pagination
791-805
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Zimmermann, Udo. University of Stavanger; Noruega
dc.description.fil
Fil: Madland, Merete Vadla. University of Stavanger; Noruega
dc.description.fil
Fil: Nermoen, Anders. University of Stavanger; Noruega
dc.description.fil
Fil: Hildebrand Habel, Tania. University of Stavanger; Noruega
dc.description.fil
Fil: Bertolino, Silvana Raquel Alina. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Hiorth, Aksel. University of Stavanger; Noruega
dc.description.fil
Fil: Korsnes, Reidar I.. University of Stavanger; Noruega
dc.description.fil
Fil: Audinot, Jean-Nicolas. Luxembourg Institute of Science and Technology; Luxemburgo
dc.description.fil
Fil: Grysan, Patrick. Luxembourg Institute of Science and Technology; Luxemburgo
dc.journal.title
AAPG Bulletin
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1306/12221412196
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://archives.datapages.com/data/bulletns/2015/05may/BLTN12196/BLTN12196.html
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