An improved plunger lift mechanism comprises an internal hollow body having bypass orifices that, when exposed, allow {HEAD ~ fluid} to pass through during plunger descent in a downhole tube to {TAIL ~ the bottom} of a production well 
to pass to
An improved plunger lift mechanism comprises an internal hollow body having bypass orifices that , when exposed , allow { HEAD ~ fluid } to pass through during plunger descent in a downhole tube to { TAIL ~ the bottom } of a production well
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH