A method for maneuvering and operating a tool within a wellbore of a subterranean well includes providing a tractor assembly having a fluid chamber with a port extending through a sidewall of the fluid chamber. The port is moved to the open position to allow a well fluid of the subterranean well to flow into the fluid chamber. The port is moved to the closed position to prevent the well fluid from flowing between the interior of the fluid chamber and the exterior of the fluid chamber. A heating laser beam is generated with a laser and directed towards the fluid chamber to increase the temperature of the well fluid within the fluid chamber. The port is moved to the open position to allow the high heat well fluid to flow out of the fluid chamber to accelerate the tractor assembly within the wellbore.