Patent ID: 6810955
Filing Date: 2004-11-02
Classification: E21B,Y10T

Abstract:
A gas lift mandrel, comprising:a valve body having first and second ends; a valve bore formed within said valve body; a longitudinal through-bore formed within said valve body, said through-bore being laterally offset from said valve bore; first and second hollow transition pieces; a first end on each said transition piece coaxial with said through-bore in said valve body; a second end on said first transition piece threaded to said first end of said valve body; a second end on said second transition piece threaded to said second end of said valve body; a first female thread on one of said first valve body end and said second end of said first transition piece; a first male thread on the other of said first valve body end and said second end of said first transition piece, said first male thread mating with said first female thread to form a first thread set; a second female thread on one of said second valve body end and said second end of said second transition piece; and a second male thread on the other of said second valve body end and said second end of said second transition piece, said second male thread mating with said second female thread to form a second thread set; wherein said first thread set has a combined wall thickness the same as the wall thickness of said first end of said first transition piece; and wherein said second thread set has a combined wall thickness the same as the wall thickness of said first end of said second transition piece.