Ratcheting setting tool for an expandable seal in a wellbore

A method comprising:

• receiving, by a setting tool positioned downhole in a wellbore, a pressure;
• moving a piston within a first chamber defined by the setting tool from a first position to a second position in response to receiving the pressure;
• transmitting, by a first check valve in a second chamber defined by the setting tool, wellbore fluid from the wellbore into the second chamber, wherein the first check valve is positioned within an inflow port in the second chamber;
• and
• transmitting, by a second check valve in the setting tool, the wellbore fluid from the second chamber into an expandable seal in response to the piston moving from the first position to the second position.

A setting tool comprising:

• a piston positionable within a first chamber defined by the setting tool that is positionable downhole in a wellbore, the piston movable from a first position to a second position within the first chamber in response to a pressure;
• a first check valve configured to transmit wellbore fluid from the wellbore into a second chamber defined by the setting tool, wherein the first check valve is positioned within an inflow port in the second chamber;
• and
• a second check valve configured to transmit wellbore fluid from the second chamber into an expandable seal in response to the piston moving from the first position to the second position.