Multi-cycle isolation valve and mechanical barrier

A method of performing one or more activities in a wellbore, comprising:

• using a work string to perform the one or more activities in the wellbore;
• sealing a tool bore of a tool in the wellbore by shifting at least one sealing device to a closed position by engaging a portion of the work string in the tool bore with the at least one sealing device, the at least one sealing device having at least two sealing elements coupled to one another;
• and
• applying a pressure cycle to shift the at least one sealing device to an open position to unseal the wellbore, wherein the pressure cycle activates a hydraulic actuator coupled to the at least one sealing device.

A system for use in a wellbore, comprising:

• a first seal element and a second seal element associated with a tool having a tool bore positioned along the wellbore, the first seal element and the second seal element being coupled to one another and configured to close the tool bore along the wellbore;
• a mechanical actuator configured to move the first and the second seal element, wherein the mechanical actuator includes an engagement sleeve and a profile connected to the engagement sleeve, and wherein the engagement sleeve is positioned uphole of the first and the second seal elements;
• a work string configured to move through the tool bore;
• a setting tool positioned on the work string and configured to engage the mechanical actuator, the profile being configured to receive the setting tool in the tool bore;
• and
• a mandrel coupled to the engagement sleeve, the mandrel being positioned downhole of the first and the second seal elements.

A system for use in a wellbore, comprising:

• first seal element and a second seal element associated with a tool having a tool bore positioned along the wellbore, the first seal element and the second seal element being coupled to one another and configured to close the tool bore along the wellbore;
• a mechanical actuator configured to move the first and the second seal element;
• a work string configured to move through the tool bore;
• a setting tool positioned on the work string and configured to engage the mechanical actuator;
• and
• a hydraulic actuator configured to shift the first and the second sealing element to an open position.