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inventor http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_9199327c1f304f1d52611e3dc4c306e0
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publicationDate 2009-07-09-04:00^^<http://www.w3.org/2001/XMLSchema#date>
publicationNumber WO-2009083237-A1
titleOfInvention Visco-elastic surfactant spacers
abstract A spacer for use in an oil well cementing operation comprises an aqueous solution of a visco-elastic surfactant. A method of treating a well in a cementing operation, comprises pumping the spacer into a well ahead of a cement slurry for cementing the well.
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