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US 2021/0332285 A1Published application
Reactive polymeric lost circulation materials
AssigneeHalliburton Energy Services, Inc.
InventorsPreston Andrew May, Hui Zhou, Jay Deville
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Abstract
Compositions and methods involving polyvalent cation reactive polymers for use as lost circulation materials in subterranean treatment operations are provided. In some embodiments, the methods include forming a treatment fluid including a base fluid, a source of a polyvalent cation, a polyvalent cation reactive polymer, and an acid precursor; introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation; and allowing the treatment fluid to at least partially set.
Claims20
A method comprising:
- forming a treatment fluid comprising a base fluid, a source of a polyvalent cation, a polyvalent cation reactive polymer, and an acid precursor;
- introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation;
- and
- allowing the treatment fluid to at least partially set.
1 more element
A method comprising:
- forming a treatment fluid comprising a base fluid, a source of a polyvalent cation, and a polyvalent cation reactive polymer, wherein the source of the polyvalent cation is coated or encapsulated by a degradable material;
- introducing the treatment fluid into a wellbore penetrating at least a portion of a subterranean formation;
- and
- allowing the treatment fluid to at least partially set.
1 more element
A composition comprising:
- an aqueous base fluid;
- calcium carbonate;
- a polyvalent cation reactive polymer comprising alginate, and
- an acid precursor.
1 more element
Dependencies are inferred from the claim text.