Covalent organic frameworks for improved oil recovery
AssigneeSaudi Arabian Oil Company
InventorsAbdulaziz S. Al-Qasim, Yuguo Wang
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Abstract
A dispersion of capsules in critical or supercritical carbon dioxide is provided. The capsules include an aqueous solution encapsulated by covalent organic framework particles. Also provided is a method of making a dispersion of aqueous solution capsules. The method includes providing a medium of critical or supercritical carbon dioxide, introducing the aqueous solution into the critical or supercritical carbon dioxide medium, and introducing a covalent organic framework particle into the critical or supercritical carbon dioxide medium. Associated methods of using the disclosed dispersions in hydrocarbon-bearing formations are also provided.
Claims17
A composition of matter comprising:
- a dispersion of capsules in critical or supercritical carbon dioxide, the capsules comprising an aqueous solution encapsulated by covalent organic framework particles,
- wherein the covalent organic framework particles comprise a crystalline porous polymer comprising a heteroatom selected from the group consisting of nitrogen, boron, oxygen, and combinations thereof, and wherein a BET surface area of the covalent organic framework particles is in a range of from about 700 to about 3700 m2/g.
A method of making a dispersion of aqueous solution capsules, the method comprising:
- providing a medium of critical or supercritical carbon dioxide;
- introducing the aqueous solution into the critical or supercritical carbon dioxide medium;
- and
- introducing a covalent organic framework particle into the critical or supercritical carbon dioxide medium,
- wherein the covalent organic framework particle comprises a crystalline porous polymer comprising a heteroatom selected from the group consisting of nitrogen, boron, oxygen, and combinations thereof, and wherein a BET surface area of the covalent organic framework particles is in a range of from about 700 to about 3700 m2/g.
A method comprising:
- introducing into a hydrocarbon-bearing formation a dispersion of aqueous solution capsules in a medium of critical or supercritical carbon dioxide, the capsules comprising an aqueous solution encapsulated by covalent organic framework particles,
- wherein the covalent organic framework particles comprise a crystalline porous polymer comprising a heteroatom selected from the group consisting of nitrogen, boron, oxygen, and combinations thereof, and wherein a BET surface area of the covalent organic framework particles is in a range of from about 700 to about 3700 m2/g.
Dependencies are inferred from the claim text.