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US 10,377,941 B2Granted
Stabilized carbon nanotube suspensions
AssigneeThe Board of Regents of the University of Oklahoma
InventorsMohannad J. Kadhum, Daniel E. Resasco, Jeffrey H. Harwell, Ben Shiau, Daniel P. Swatske
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Abstract
Stable CNT dispersions having a combination of polymeric dispersants, including at least one first dispersant and at least one second dispersant, wherein the second dispersant is stable under saline conditions, and methods of using the CNT dispersions in subterranean formations for enhancing oil recovery therefrom.
Claims20
A method, comprising:
- introducing a dispersion comprising carbon nanotube hybrids into a subterranean formation, the carbon nanotube hybrids comprising:
- a plurality of carbon nanotubes (“CNTs”);
- a polymeric first dispersant at least partially surrounding the CNTs, forming first dispersant-CNT composites;
- a polymeric second dispersant at least partially surrounding the first dispersant-CNT composites, forming the carbon nanotube hybrids;
- and
- wherein the polymeric second dispersant is stable at a salinity of at least about 10% by weight at a temperature in a range of at least about 25° C. to about 90° C.
3 more elements
A system, comprising:
- a first apparatus suitable for introducing a dispersion comprising carbon nanotube hybrids into a subterranean formation, the carbon nanotube hybrids comprising:
- a plurality of carbon nanotubes (“CNTs”);
- a polymeric first dispersant at least partially surrounding the CNTs, forming first dispersant-CNT composites;
- a polymeric second dispersant at least partially surrounding the first dispersant-CNT composites, forming the carbon nanotube hybrids, wherein the polymeric second dispersant is stable at a salinity of at least about 10% by weight at a temperature in a range of at least about 25° C. to about 90° C.;
- and
- a second apparatus suitable for imaging the subterranean formation by utilizing the dispersion comprising carbon nanotube hybrids as a contrast agent.
3 more elements
Dependencies are inferred from the claim text.