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Precipitation of sparingly soluble salts in packed sandbeds in the presence of miscible and immiscible organic substances page 167–177 by Christakis A. Paraskeva et al.
Author(s) -
Pavlakou Efstathia I.,
Sygouni Varvara,
Lioliou Maria G.,
Koutsoukos Petros G.,
Paraskeva Christakis A.
Publication year - 2016
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201670004
Subject(s) - calcium carbonate , supersaturation , carbonate , precipitation , chemistry , dodecane , nucleation , chemical engineering , mineralogy , inorganic chemistry , organic chemistry , physics , meteorology , engineering
A new method has been developed for the prevention of sand reentrainment during oil production from poorly consolidated reservoir formations. Consolidation was achieved by the in‐situ precipitation of calcium carbonate. The precipitation of sparingly soluble calcium carbonate was studied in sandbeds which were filled in with supersaturated solutions in the presence, either of water immiscible oil, n‐dodecane, or of monoethylene glycol (MEG) or polyethelene glycol (PEG), both fully miscible with water. Results showed that oil–water interfaces accelerated nucleation and crystal growth of calcium carbonate at the inlet of the unconsolidated bed. In the presence of MEG in‐depth sandbed consolidation was maximized. (Picture: Christakis A. Paraskeva et al., 10.1002/crat.201500267 pp. 167–177, in this issue)