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US 10,501,682 B2Granted
Polysaccharide coated nanoparticle compositions comprising ions
AssigneeSaudi Arabian Oil Company
InventorsJason R. Cox, Hooisweng Ow, Shannon L. Eichmann, Howard K. Schmidt
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Abstract
A composition including a coated nanoparticle including a nanoparticle and a cross-linked carbohydrate-based coating and an ion selected from the group consisting of Li+, Na+, K+, Rb+, Cs+, Be2+, Mg2+, Ca2+, Sr2+, Ba2+, and mixtures thereof; methods of making and using the composition; and systems including the composition.
Claims1
A method of treating a subterranean formation, the method comprising:
- placing in a subterranean formation a nanoparticle composition comprising:
- a coated nanoparticle comprising an iron oxide nanoparticle and a cross-linked carbohydrate-based coating comprising dextran, pentaerythritol glycidyl ether, and 2-amino-2-hydroxymethyl-propane-1,3-diol;
- and
- an ion comprising Ca2+,
- wherein the dextran is cross-linked by pentaerythritol glycidyl ether.
2 more elements
Dependencies are inferred from the claim text.