Hthp corrosion resistant composite seal via recrystallization of reactive composite: formulation and deployment
AssigneesCNPC USA Corporation, Beijing Huamei, Inc., China National Petroleum Corporation
InventorsLei ZHAO, Jiaxiang (Jason) REN, Timothy DUNNE, Peng CHENG
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Abstract
The Patent Application discloses an in-situ swellable composition suitable for use in subterranean wells. The swellable composition may comprise a composite material. The composite material swells on contact with water due to chemical reaction of the composite material.
Claims20
A swellable composition, suitable for use in subterranean wells, comprising:
- a composite material, wherein the composite material is an inorganic compound and swells on contact with water due to chemical reaction of the composite material.
An in-situ swellable downhole tool useable for isolating sections of a wellbore, comprising:
- a cylindrical body having a backup piece at least at one end of the cylindrical body;
- and
- a tube extends through the cylindrical body and the backup piece;
- wherein the cylindrical body is made of a swellable material expandable vertical to the tube to form an in-situ packer at downhole.
A method for manufacturing swellable compositions suitable for use in subterranean wells, comprising:
- admixing a swellable composite material with a reactive oxide to form a premix;
- adding an inert oxide to the premix to form a mixture;
- and
- pressing the mixture to a compact.
Dependencies are inferred from the claim text.