Method and apparatus for storing energy and multiplying force to pressurize a downhole fluid sample

A system for pressurizing a sample downhole comprising:

• a downhole tool having a pump that transfers the sample into a sample chamber against a moveable sample chamber piston, wherein the sample chamber piston is in pressure communication with hydrostatic pressure on a lower side of the sample chamber piston and in pressure communication with the sample in the sample chamber on an upper side of the sample chamber piston;
• an energy storage chamber containing an energy storage medium, the energy storage chamber having an energy storage piston in pressure communication with the sample in the sample chamber;
• and
• a pressure communication member posited between the sample chamber piston and the energy storage piston.

A method for pressurizing a sample downhole comprising:

• pumping the sample into a sample chamber against a hydrostatic pressure;
• pressurizing an energy storage medium with the hydrostatic pressure;
• placing the sample in the sample chamber and the energy storage medium in pressure communication;
• and
• pressurizing the sample with the pressure in the energy storage medium.

A method of pressurizing a formation fluid downhole comprising:

• storing a compressible fluid in a first chamber;
• pumping the formation fluid in a second chamber against a hydrostatic pressure;
• establishing a pressure communication between the compressible fluid and the formation fluid;
• compressing the compressible fluid to the hydrostatic pressure;
• applying a pressure on the formation fluid that is greater than the hydrostatic pressure utilizing pressure of the compressible fluid.