Side Pocket Barrier Valve Gas Lift and Mandrel

Abstract

A gas lift barrier valve mandrel assembly includes a longitudinally extending tubular member that defines a production conduit and has a central longitudinal axis. A side pocket mandrel has a first pocket for accepting a gas lift barrier valve and has a first central axis. The side pocket mandrel has a second pocket for accepting a gas lift barrier valve and has a second central axis. The central axis of the production conduit, first axis and second axis are non-coaxial and are parallel to one another. A passage fluidly connects an outside of the mandrel to an inside of the production conduit and is intersected by the first and second pockets.

What is claimed is: 
     
         1 . A gas lift barrier valve mandrel assembly comprising:
 a longitudinally extending tubular member defining a production conduit and having a central longitudinal axis; and   a side pocket mandrel having a first and a second pocket for accepting, respectively, a first and a second gas lift barrier valve.   
     
     
         2 . The gas lift barrier valve mandrel assembly of  claim 1  further comprising a passage extending from outside the side pocket mandrel to inside the production conduit, the passage intersected by the first and second pockets. 
     
     
         3 . The gas lift barrier valve mandrel assembly of  claim 2 , further comprising a first gas lift barrier valve disposed in the first pocket. 
     
     
         4 . The gas lift barrier valve mandrel assembly of  claim 3 , further comprising a second gas lift barrier valve disposed in the second pocket. 
     
     
         5 . The gas lift barrier valve mandrel assembly of  claim 1 , wherein the first pocket has a first axis, the second pocket has a second axis, and the central axis of the production conduit, first axis, and second axis are non-coaxial and are substantially parallel to one another. 
     
     
         6 . The gas lift barrier valve mandrel assembly of  claim 3 , further comprising a gas compressor in fluid communication with the first gas lift barrier valve. 
     
     
         7 . The gas lift barrier valve mandrel assembly of  claim 1 , wherein the tubular member is connected with a wellhead and the tubular member is located downhole at a subterranean location. 
     
     
         8 . A well comprising:
 a wellbore;   a production conduit disposed within the wellbore;   a side pocket mandrel in fluid communication with the production conduit, the side pocket mandrel having a first and a second pocket for accepting, respectively, a first and a second gas lift barrier lift barrier valve; and   a passage extending from outside the side pocket mandrel to inside the production conduit.   
     
     
         9 . The well of  claim 8 , wherein the passage is intersected by the first pocket and by the second pocket. 
     
     
         10 . The well of  claim 8 , wherein the first pocket has a first axis, the second pocket has a second axis, and the production conduit has a central axis, and the central axis, first axis, and the second axis are non-coaxial. 
     
     
         11 . The well of  claim 8 , further comprising a first gas lift barrier valve disposed in the first pocket. 
     
     
         12 . The well of  claim 11 , further comprising a second gas lift barrier valve disposed in the second pocket. 
     
     
         13 . The well of  claim 11 , further comprising a gas compressor in fluid communication with a first gas lift barrier valve. 
     
     
         14 . A method of deploying a gas lift barrier system comprising:
 locating a gas lift mandrel assembly down hole, the gas lift mandrel assembly comprising:
 (a) a longitudinally extending tubular member defining a production conduit and having a central longitudinal axis; 
 (b) a side pocket mandrel having a first and a second pocket, the first pocket having a first central axis; and 
 (c) a passage extending from outside the side pocket mandrel to inside the production conduit, the passage intersected by the first and second pockets; 
   positioning a first gas lift barrier valve in the first pocket; and   positioning a second gas lift barrier valve in the second pocket.   
     
     
         15 . The method of  claim 14 , wherein the first pocket has a first axis, the second pocket has a second axis, and the central axis of the production conduit, first axis, and second axis are non-coaxial and are substantially parallel to one another. 
     
     
         16 . The method of  claim 14 , further comprising connecting a gas compressor in fluid communication with the first gas lift barrier valve. 
     
     
         17 . The method of  claim 14 , wherein the first gas lift barrier valve is positioned in the first pocket with a tool lowered by way of a technique selected from the list consisting of:
 wireline, slickline, and coil tubing.   
     
     
         18 . The method of  claim 14 , wherein the second gas lift barrier valve is positioned in the second pocket with a tool lowered by way of a technique selected from the list consisting of: wireline, slickline, and coil tubing. 
     
     
         19 . The method of  claim 14 , further comprising: removing the first gas lift barrier valve from the first pocket with a tool relayed by way of a technique selected from the list consisting of: wireline, slickline, and coil tubing. 
     
     
         20 . The method of  claim 14 , further comprising: removing the second gas lift barrier valve from the second pocket with a tool relayed by way of a technique selected form the list consisting of: wireline, slickline, and coil tubing.