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US 2025/0059854 A1Published application
Encapsulated internal filter cake breaker
AssigneeBaker Hughes Oilfield Operations LLC
InventorsAutumn Shepherd, Dorianne A. Castillo, Oleg Mazyar, Rostyslav Dolog, Radhika Suresh, Angela Doan
Life of this patent
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Abstract
A method includes: introducing a breaker composite into a subsurface formation, the breaker composite having a shell encapsulating a core comprising a breaker; breaking or degrading the shell of the breaker composite to release the breaker; and reacting the released breaker with a component of a filter cake, a scale, or a combination thereof thereby removing the filter cake, the scale, or a combination thereof.
Claims19
A method comprising:
- introducing a breaker composite into a subsurface formation, the breaker composite having a shell encapsulating a core comprising a breaker;
- breaking or degrading the shell of the breaker composite to release the breaker;
- and
- reacting the released breaker with a component of a filter cake, a scale, or a combination thereof thereby removing the filter cake, the scale, or a combination thereof.
1 more element
A drilling fluid comprising:
- a carrier;
- a breaker composite having a shell encapsulating a core comprising a breaker;
- and
- at least one of a viscosifier, a rheology modifier, a dispersant, a weighting agent, a defoamer, a fluid loss agent, a thickening agent, bentonite, a lubricant, a filler, an emulsifier, a surfactant, or a pH buffer;
- wherein the breaker comprises at least one of an acid component or a chelant.
2 more elements
Dependencies are inferred from the claim text.