Wellbore fluid saver assembly
AssigneeSmith International, Inc.
InventorPiro Shkurti
Life of this patent
Estimating the term…
Abstract
A method for performing a service operation within a wellbore extending into a formation comprises sealing a first length of the wellbore to define a first isolated formation zone, flowing a pressurized fluid through a tubular string into the first isolated formation zone, and unsealing the first length of the wellbore without venting the pressurized fluid from the tubular string or awaiting depressurization of the first isolated formation zone. An assembly connected to a tubular string for performing a service operation in a wellbore comprises a mandrel with a flowbore in fluid communication with the tubular string, an upper sealing device, a lower sealing device, a selectively operable valve that enables or prevents fluid communication between the flowbore and the wellbore, and a selectively closeable bypass flow path.
Claims27
A method for performing a service operation within a wellbore extending into a formation comprising:
- sealing a first length of the wellbore to define a first isolated formation zone;
- flowing a pressurized fluid through a tubular string into the first isolated formation zone;
- and
- unsealing the first length of the wellbore without venting the pressurized fluid from the tubular string or awaiting depressurization of the first isolated formation zone.
A method for performing a service operation within a wellbore extending into a formation comprising:
- running an assembly comprising a valve into the wellbore on a tubular string;
- fixing the assembly within the wellbore to define a first isolated formation zone;
- flowing a pressurized fluid through the valve into the first isolated formation zone;
- and
- closing the valve to contain the pressurized fluid within the tubular string.
A method for performing a service operation within a wellbore extending into a formation comprising:
- running an assembly into the wellbore on a tubular string;
- engaging a wellbore wall with the assembly;
- setting down on the tubular string to activate upper and lower seals of the assembly against the wellbore wall to define an isolated formation zone;
- additional setting down on the tubular string to open a valve of the assembly;
- flowing a pressurized fluid through the valve into the isolated formation zone;
- and
- picking up on the tubular string to close the valve and contain the pressurized fluid within the tubular string.
An assembly connected to a tubular string for performing a service operation in a wellbore, the assembly comprising:
- a mandrel with a flowbore in fluid communication with the tubular string;
- an upper sealing device;
- a lower sealing device;
- a selectively operable valve that enables or prevents fluid communication between the flowbore and the wellbore;
- and
- a selectively closeable bypass flow path.
Dependencies are inferred from the claim text.