Vis enkel innførsel

dc.contributor.authorAmiri, Hossein Ali Akhlaghi
dc.date.accessioned2014-11-21T08:15:06Z
dc.date.available2014-11-21T08:15:06Z
dc.date.issued2014-03
dc.identifier.citationEvaluation of Alkaline Sodium Silicate Gel for Reservoir In-Depth Profile Modifications to Enhance Water Sweep Efficiency in Sandstone Reservoirs by Hossein Ali Akhlagi Amiri, Stavanger : University of Stavanger, 2014 (PhD thesis UiS, no. 221)nb_NO
dc.identifier.isbn978-82-7644-563-3
dc.identifier.issn1890-1387
dc.identifier.urihttp://hdl.handle.net/11250/226251
dc.descriptionPhD thesis in Petroleum engineeringnb_NO
dc.description.abstractAlkaline sodium silicate (Na-silicate) is addressed to be applied for in-depth water conformance control in sandstone reservoirs containing high permeability layers. The main factors affecting the gel time, strength and shrinkage in the alkaline silicate systems are the Na-silicate content, the pH, the presence of divalent ions and temperature. Divalent ions, e.g., Ca2+ and Mg2+, reduced the gel time and increased the gel strength and shrinkage. They also caused metal silicate precipitation at high concentrations. No precipitation formed with low-salinity water (25-times diluted seawater), which makes it a possible option for preflushing reservoir in field application. Temperature accelerated the gel time but the gel strength was shown to be reduced as temperature increased from 20 to 50 °C. Further increase in the temperature to 80 °C showed a slight increase of the gel strength. This may be attributed to increase of silicate solubility at high temperature. High shear rates, even for a short interval before gelation (which resembles the wellbore case), accelerated gel time; hence must be considered in field applications. A simple graphical method was suggested to estimate the combined effects of different factors on the gel time and strength. Dynamic adsorption of silicate in sand-packs was considerably lower than the estimated mono-layer adsorption. It was demonstrated that silicate adsorption is reversible, and most of the adsorbed mass is desorbed in the post-flush water. Na-silicate showed water-like injectivity in flooding experiments.nb_NO
dc.language.isoengnb_NO
dc.publisherUniversity of Stavanger, Norwaynb_NO
dc.relation.ispartofseriesPhD thesis UiS;221
dc.relation.haspartH. A. Akhlaghi Amiri and A. A. Hamouda, 2013: Evaluation of level set and phase field methods in modeling two phase flow with viscosity contrast through dual-permeability porous medium. International Journal of Multiphase flow. 52, 22-34.nb_NO
dc.relation.haspartH. A. Akhlaghi Amiri and A. A. Hamouda, 2014: Pore-scale modeling of non-isothermal two phase flow in 2D porous media: Influences of viscosity, capillarity, wettability and heterogeneity. International Journal of Multiphase flow. 61, 14-27.nb_NO
dc.relation.haspartA. A. Hamouda and H. A. Akhlaghi Amiri, 2014: Factors affecting alkaline sodium silicate gelation for in-depth reservoir profile modification. Energies. 7 (2), 568-590.nb_NO
dc.relation.haspartH. A. Akhlaghi Amiri and A. A. Hamouda, 2012: Pore-scale simulation of coupled two-phase flow and heat transfer through dual-permeability porous medium. Presented at 2012 COMSOL Conference, Milan, Italy, October 10-12.nb_NO
dc.relation.haspartH. A. Akhlaghi Amiri, A. A. Hamouda and A. Roostaei, 2014: Sodium silicate behavior in porous media being applied for in-depth profile modificationsnb_NO
dc.rightsCopyright the author, all right reserved
dc.rightsNavngivelse 3.0 Norge*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/no/*
dc.subjectpetroleumsteknologinb_NO
dc.subjectsandstone reservoirsnb_NO
dc.subjectalkaline sodium silicatenb_NO
dc.titleEvaluation of Alkaline Sodium Silicate Gel for Reservoir In-Depth Profile Modifications to Enhance Water Sweep Efficiency in Sandstone Reservoirsnb_NO
dc.typeDoctoral thesisnb_NO
dc.subject.nsiVDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512nb_NO


Tilhørende fil(er)

Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel

Copyright the author, all right reserved
Med mindre annet er angitt, så er denne innførselen lisensiert som Copyright the author, all right reserved