Straddle Solutions - Gas Lift Valve (GLV)
Interwell’s Anchored Production Straddle (APS) can be used to retrofit a gas-lift device, and remedy existing gas-lift systems that have failed or deepen the point of gas-lift in the well.

Case Study:
http://www.interwell.com/getfile.php/Bilder/New%20Web%20case%20study/Case%20Study%20APS%20Gas-Lift%20Nov.2013.pdf

Link:
http://www.interwell.com/gas-lift-straddles/category682.html