Disposable Wellbore Setting Tool Atmospheric Pressure Balancing

The patent introduces an intermediary atmospheric chamber between the piston and the power charge. This chamber contains atmospheric pressure that acts as a mediator force, reducing the net hydrostatic pressure burden on the piston. The atmospheric pressure in this chamber counteracts portion of the hydrostatic pressure, allowing a smaller power charge to achieve the necessary piston shift force.

The patent changes the pressure parameter configuration by creating a sealed atmospheric chamber. This chamber maintains atmospheric pressure (1 atm) internally, which is significantly lower than the hydrostatic pressure in the wellbore. By changing the pressure environment from direct hydrostatic exposure to atmospheric pressure exposure, the system reduces the force requirement for piston movement, enabling a more compact power charge size.

The atmospheric chamber serves as a protective intermediary that shields the piston from direct exposure to high hydrostatic pressure. By introducing this intermediate pressure environment, the system maintains reliability in overcoming hydrostatic pressure while using a smaller power charge. The atmospheric pressure in the chamber acts as a buffer that reduces the net pressure differential the power charge must overcome.

The patent replaces the traditional direct mechanical pressure-overcoming approach with a pneumatic/hydraulic approach using atmospheric pressure differential. Instead of relying solely on the power charge to generate enough pressure to overcome hydrostatic pressure, the system uses the atmospheric pressure in the chamber as a substitute force that contributes to balancing the pressure differential, thereby reducing the mechanical burden on the power charge.