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US 12,669,033 B2Granted
Encapsulated internal filter cake breaker
OwnerAutumn Shepherd, Dorianne A. Castillo +4inventors
InventorsAutumn Shepherd, Dorianne A. Castillo, Oleg Mazyar, Rostyslav Dolog, Radhika Suresh, Angela Doan
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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.
Claims15
A method comprising:
- introducing a breaker composite into a subsurface formation, the breaker composite having a shell encapsulating a core comprising a breaker, wherein the breaker comprises at least one of an acid component or a chelant, and wherein the core comprising a disintegrating agent comprising a phase change material, wherein the phase change material comprises paraffines, high density polyethylene (HDPE), d-mannitol, hydroquinone, adipic acid, acetamide, erythritol, phthalic anhydride, maleic acid, 2-chlorobenzoic acid, sugars, sugar alcohols, or fatty acids or their derivatives;
- breaking or degrading the shell of the breaker composite to release the breaker, wherein breaking or degrading the shell comprises heating the disintegrating agent to cause the phase change material to expand;
- 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
Dependencies are inferred from the claim text.