Release of Chemical Systems for Oilfield Applications by Stress Activation
OwnerJesse Lee, Stéphane Boulard +2inventors
InventorsJesse Lee, Stéphane Boulard, Nikhil Shindgikar, Kefi Slaheddine
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Abstract
The invention provides a system comprising a encapsulating material (B) and a component (A), wherein said component (A) is trapped within said encapsulating material (B) and said encapsulating material (B) being able to break and release said component (A) under pressure drop higher than 10 bars.
Claims20
A composition comprising an encapsulating material (B) and a component (A), wherein said component (A) is trapped within said encapsulating material (B), the system further comprising a carrier fluid (C) transporting said encapsulating material (B) and said trapped component (A), wherein said encapsulating material (B) is able to break and releases said component (A) when submitted to sufficient stress.
A method to release a component (A) in a zone of a wellbore or near-wellbore, comprising the steps of:
- placing a encapsulating material (B) and a component (A) in the wellbore, wherein said component (A) is trapped within said encapsulating material (B);
- placing said encapsulating material (B) and said trapped component (A) in a restriction in the vicinity of the zone so said encapsulating material (B) is able to break and releases said component (A).
A method for treating loss circulation comprising
- mixing a carrier fluid (C) with a component (A) being encapsulated into an encapsulation material (B) to form a pumpable slurry;
- pumping said slurry into a wellbore through at least one casing until the slurry passes through a restriction;
- Wherein said restriction creates sufficient stress to break the encapsulation material (B) thereby releasing the component (A).
Dependencies are inferred from the claim text.