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What’s New with Sclero? Laboratory Study of an EOR-Grade Scleroglucan for Polymer Flooding and Conformance Control
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Scleroglucan is an attractive biopolymer for EOR thanks to its resistance to shear, salinity, temperature and to its low environmental impact. However, previous scleroglucan grades suffered from a lack of filterability because of polymer aggregates and broth residues coming from their synthesis. A new EOR-grade scleroglucan has been submitted to lab experiments. Care must be taken to properly solubilize this polymer in powder form. The injectivity of scleroglucan solutions into a low permeability limestone at residual oil saturation is good and adsorption of the macromolecule on the rock is low. Thus the last technical barriers for scleroglucan to be used as a powerful flooding agent have been removed. Moreover, it can be a potential conformance control agent in low permeability reservoirs.