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US 2017/0247597 A1Published application
Method for treating subterranean formations
AssigneeLamberti SPA
InventorsRoberto MACCHI, Enrico CAVO, Lorenzo GIARDINI, Angelo CASIRAGHI, Luigi MERLI, Mauro TENCONI, Pierangelo PIROVANO, Giovanni FLORIDI, Giuseppe LI BASSI
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Abstract
Method of treating a portion of a subterranean formation comprising the injection of an aqueous fluid containing a modified polysaccharide bearing ethylenically unsaturated double bonds and an initiator of radical polymerization.
Claims16
1-10. (canceled)
A method for treating a portion of a subterranean formation comprising:
- i. providing an aqueous fluid comprising:
- a) from 0.05 to 3.0% by weight of a modified polysaccharide, the modified polysaccharide being a polysaccharide bearing ethylenically unsaturated double bonds, with the double bonds having a degree of substitution (DSDB) of from 0.0001 to 0.5;
- b) from 0 to 3.0% by weight of a polyethylenically unsaturated compound different from the modified polysaccharide a);
- c) from 0.0001% to 1% by weight of a radical polymerization initiator chosen from the group consisting of photoinitiators, thermal free radical initiators, redox free radical initiators, and combinations thereof;
- ii. introducing the aqueous fluid into a portion of a subterranean formation;
- and
- iii. before or after having introduced the aqueous fluid into a portion of a subterranean formation, inducing thickening of the aqueous fluid by exposing the fluid to UV-visible light irradiation or to heat.
4 more elements
Dependencies are inferred from the claim text.