a time actuated element includes a mandrel , a housing coupled to the mandrel , the housing defining a fluid expansion chamber . a piston is positioned within the fluid expansion chamber . a thermally expanding fluid is positioned within the fluid expansion chamber . an end ring coupled to the piston slides along the mandrel in response to a sliding of the piston . a packer having a first end and a second end , the first end adapted to slide along the mandrel in response to a sliding of the end ring , and the second end fixedly coupled to the mandrel , so that a sliding of the first end of the packer toward the second end causes the packer element to decrease in length and increase in radius .