dc.contributor.author | Amiri, Hossein Ali Akhlaghi | |
dc.date.accessioned | 2014-11-21T08:15:06Z | |
dc.date.available | 2014-11-21T08:15:06Z | |
dc.date.issued | 2014-03 | |
dc.identifier.citation | Evaluation 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.isbn | 978-82-7644-563-3 | |
dc.identifier.issn | 1890-1387 | |
dc.identifier.uri | http://hdl.handle.net/11250/226251 | |
dc.description | PhD thesis in Petroleum engineering | nb_NO |
dc.description.abstract | Alkaline 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.iso | eng | nb_NO |
dc.publisher | University of Stavanger, Norway | nb_NO |
dc.relation.ispartofseries | PhD thesis UiS;221 | |
dc.relation.haspart | H. 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.haspart | H. 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.haspart | A. 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.haspart | H. 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.haspart | H. A. Akhlaghi Amiri, A. A. Hamouda and A. Roostaei, 2014: Sodium silicate behavior in porous media being applied for in-depth profile modifications | nb_NO |
dc.rights | Copyright the author, all right reserved | |
dc.rights | Navngivelse 3.0 Norge | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/no/ | * |
dc.subject | petroleumsteknologi | nb_NO |
dc.subject | sandstone reservoirs | nb_NO |
dc.subject | alkaline sodium silicate | nb_NO |
dc.title | Evaluation of Alkaline Sodium Silicate Gel for Reservoir In-Depth Profile Modifications to Enhance Water Sweep Efficiency in Sandstone Reservoirs | nb_NO |
dc.type | Doctoral thesis | nb_NO |
dc.subject.nsi | VDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512 | nb_NO |