Research on a novel composite gel system for CO2 breakthrough

A composite gel was prepared for plugging CO 2 channeling, which is a serious problem for enhanced oil recovery with CO 2 . A composite gel which is one of the materials for successful control of CO 2 channeling during CO 2 injection process was studied in this paper. SEM and nano particle size anal...

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Bibliographic Details
Published in:Petroleum science 2010-06, Vol.7 (2), p.245-250
Main Authors: Hou, Yongli, Yue, Xiang’an
Format: Article
Language:English
Subjects:
Earth and Environmental Science
Earth Sciences
Economics and Management
Energy Policy
Industrial and Production Engineering
Industrial Chemistry/Chemical Engineering
Mineral Resources
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Summary:A composite gel was prepared for plugging CO 2 channeling, which is a serious problem for enhanced oil recovery with CO 2 . A composite gel which is one of the materials for successful control of CO 2 channeling during CO 2 injection process was studied in this paper. SEM and nano particle size analysis were used to describe this material’s microstructure. Its effect on CO 2 channeling control was evaluated with core flow experiments. Both the rheological test and core plugging experiments indicated that both acrylamide monomer concentration and reaction pressure had positive influences on gel properties. The gel system with an acrylamide monomer concentration of 2% and 5% sodium silicate was proved to have excellent strength, elastic and plugging efficiency, which confirmed huge development potential and wide application of the composite gel system. The high-pressure acid environment arising from the CO 2 injection not only reacts with solid silicate to form silicic acid gel, but also facilitates efficient polymerization.
ISSN:1672-5107
1995-8226
DOI:10.1007/s12182-010-0028-6