Patent ID: 11866643
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 0:
1. A method for removing excess fluid in a wellbore, the method comprising:
introducing a first aqueous solution comprising a nitrogen-containing compound and a second aqueous solution comprising a nitrite-containing compound and a foaming agent into the wellbore such that the first aqueous solution and the second aqueous solution intermix within the wellbore;
maintaining the intermixed solution in the wellbore such that gas, heat, and foam are generated; and
removing the excess fluid from the wellbore,
wherein the foaming agent is selected from the group consisting of partially hydrolyzed polyvinyl acetate, partially hydrolyzed modified polyvinyl acetate, block or copolymers of polyethylene, polypropylene, polybutylene and polypentene, proteins, partially hydrolyzed polyvinyl acetate, polyacrylate, and derivatives of polyacrylates, polyvinyl pyrrolidone and derivatives thereof, or combinations thereof.