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US 11,932,812 B2Granted
Particles for carriers and tracers
AssigneeAlchemy Sciences, Inc.
InventorsErick Acosta, Luchao Jin, Shashidhar Rajagopalan
Life of this patent
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Abstract
A process for forming a particle carrier system includes supplying a particle carrier, the particle carrier having a surface and modifying the particle carrier surface to include a first ionic functional group. The process also includes chemically binding the first ionic functional group on the particle carrier surface to a first ionic molecule.
Claims7
A process for delivery of a first ionic molecule into a subterranean formation comprising:
- supplying a particle carrier system, the particle carrier system including a particle carrier, the particle carrier having a surface, the surface including a first ionic functional group, the first ionic functional group chemically bound to the first ionic molecule
- wherein the particle carrier is mesoporous, the particle carrier having pore sizes between 2 and 50 nm, wherein pores of the particle carrier include a second ionic functional group and a second ionic molecule is chemically bonded to the pores of the particle carrier;
- injecting the particle carrier system into the subterranean formation;
- altering a pKa in the subterranean formation to a first release pKa to release the chemical bond between the first ionic functional group and the first ionic molecule;
- and
- altering the pKa in the subterranean formation to a second release pKa to release the chemical bond between the second ionic functional group and the second ionic molecule.
3 more elements
Dependencies are inferred from the claim text.