Gas Liquid Control

Ok imagine you have a straw 3 quarters of the way in a glass and the glass is half way filled with water. And the glass is sealed and has lets say 500 pounds per sq inch, and the straw is sealed with 400 pounds per sq inch. Which way would be more efficient to get the water from the glass. Removing the pressure in the straw at a fast rate or releasing at a slow controlled rate? What I have described is a model to how a Natural gas well works. The glass being the casing and the straw being the tubing that the gas comes to the surface in. What I need is someone who knows physics very well to tell me whats the best way to get the liquid in the tubing to get to the surface so the well will unload and the gas will be released.