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US 11,999,900 B2Granted
Surface-modified nanoparticle compositions and related applications in subterranean hydrocarbon recovery
AssigneeChampionX LLC
InventorsDuy T. Nguyen, William T. Duttlinger, Jr., Rangarani Karnati, Zhengang Zong, Kai He, Linh Do
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Abstract
Surface-modified nanoparticles and surfactants are used in compositions and methods for enhancing hydrocarbon recovery from subterranean formations.
Claims17
A treatment fluid for enhanced hydrocarbon recovery, comprising:
- surface-modified nanoparticles, each of the surface-modified nanoparticles comprising silica and having a surface modified with a zwitterionic silane;
- a stability component comprising a sulfate, chloride, or carbonate salt of aluminum, titanium, or zirconium;
- a surfactant composition comprising an amphoteric surfactant and a nonionic surfactant;
- and
- a solvent.
2 more elements
A method of enhanced hydrocarbon recovery from a subterranean formation, the method comprising:
- introducing a treatment fluid into the subterranean formation via a well, the treatment fluid comprising
- (a) surface-modified nanoparticles, each of the surface-modified nanoparticles comprising silica and having a surface modified with a zwitterionic silane,
- (b) a stability component comprising a sulfate, chloride, or carbonate salt of aluminum, titanium or zirconium,
- (c) a surfactant composition comprising an amphoteric surfactant and a nonionic surfactant, and
- (d) a solvent;
- and
- recovering a hydrocarbon from the subterranean formation via the well.
4 more elements
Dependencies are inferred from the claim text.