Patent ID: 7673506
Filing Date: 2010-03-09
Classification: E21B

Abstract:
1. A method for actuating a pressure delivery system of a fluid sampler, the method comprising: maintaining a differential pressure across a valving assembly disposed within a longitudinal passageway of a housing; increasing the pressure in a chamber disposed within the longitudinal passageway by receiving a fluid sample in the fluid sampler; responsive to the pressure increase, displacing a piston disposed within the longitudinal passageway in a first direction relative to the housing such that the piston travels toward the valving assembly; actuating the valving assembly by piercing through at least a portion of a pressure disk with a piercing assembly of the piston; equalizing the pressure across the valving assembly; and responsive to the pressure equalization, displacing the piston in a second direction relative to the housing such that the piston travels away from the valving assembly, increases the pressure in the chamber and pressurizing the fluid sample in the fluid sampler.