Patent ID: 7980311

Claim:
A device connected to a pump deployed in a gas well between an area of low pressure and an area of high pressure, the device comprising: a jar device, the jar device comprising a mandrel and a no-go sleeve, wherein the mandrel is attached to the no-go sleeve by a shearable connection, and wherein the mandrel is configured to slide axially from a first position to a second position with respect to the no-go sleeve when the shearable connection is sheared; a seal that prevents fluid communication between the area of high pressure and the area of low pressure when the mandrel is located in the first position and that does not prevent fluid communication between the area of high pressure and the area of low pressure when the mandrel is located in the second position; and a jarring tool actuatable to apply an axial force onto the jar device that is large enough to shear the shearable connection and cause the mandrel to slide from the first position to the second position.