Patent ID: 11920432
Assignee: DOWNHOLE PRODUCTS LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 18:
19. A method of using the toe valve of claim 1 in a wellbore, comprising:
assembling the toe valve as part of the casing or liner string;
deploying the casing or liner string into the wellbore;
cementing the casing or liner string into the wellbore;
increasing pressure in a bore of the casing or liner string to an opening pressure, thereby shifting the toe valve from the closed position to the open position to allow testing equipment to be positioned in the wellbore; and
pressure testing the cemented casing or liner string by pressurizing the bore thereof, wherein the toe valve is in the closed position during the assembly, deployment, and cementation, and in the open position during pressure testing.