completion set, and methods for maintaining pressure within a multi-zone production zone and for providing pressure maintenance within a multi-zone production zone

摘要

a method and apparatus including an elongate base tube having an outer surface at least partially defining an outer region and an inner surface at least partially defining an inner region; and a pressure holding device disposed in the base tube and comprising: a flow path extending between the inner region and the outer region; and a valve having a gas-charged chamber, the valve allowing a fluid to flow from the inner region to the outer region through the first flow path when a pressure differential between a pressure associated with the inner region and a pressure associated with it. the gas-charged chamber is less than a maximum pressure limit and when a pressure differential between the external region and the pressure associated with the gas-charged chamber is greater than a minimum pressure limit.