DOWNHOLE FLUID SEPARATION SYSTEM

摘要

A method of separating fluids that actuate a downhole tool (12) from well fluids is disclosed. The assembly permits equalization or circulation through the running string for delivery of the downhole tool to the desired location. The circulation passage (28) is closed and the clean fluid is displaced into the downhole tool by pressure applied to a movable barrier (22). At the end of the clean fluid displacement, a lateral port (30) is opened to allow retrieval without pulling a wet string.