Patent ID: 11920434
Assignee: HALLIBURTON MANUFACTURING AND SERVICES LIMITED
Field: Civil engineering (Other fields)
Classification: CPC E | IPC E

Claim 0:
1. A method of operating a downhole apparatus comprising an activation chamber and a tubular body having first and second ports in a wall thereof, wherein the downhole apparatus includes a first valve arrangement associated with the first port and a second valve arrangement being associated with the second port, the method comprising:
operating the first valve arrangement and the second valve arrangement from a locked first configuration, in which the first port is closed and the second port is closed, to a locked second configuration in which the first port opens to enable activation fluid to flow into an activation chamber configured to expand and place the down hole apparatus in contact with a wall of a wellbore and the second port is closed, wherein the first valve arrangement includes one or more locking devices configured to lock a first valve member of the first valve arrangement in place relative to the tubular body; and
operating the first valve arrangement and the second valve arrangement from the locked second configuration to a locked third configuration, in which the first port is closed and the second port opens to enable reservoir fluid into the tubular body.