GreatWall offers a complete array of Well Completion Services including intelligent Completion Designs, Equipment and Installation We provide complete well completions solutions for every conceivable reservoir drainage pattern from conception design to installation. GreatWall provides complete Well designs with the aid of the latest computer software and procures all well Completion equipment including; Flow Couplings, Stainless Steel or Incoloy Control Lines, Sub-surface Safety Valve (Wireline or tubing retrievable), Gas-lift Mandrels with Live or Dummy Valves, Sliding Sleeves, Snap Latch Seal Assemblies, Single Production Packers, Blast Joints, G-locators with Seal Assemblies, Liner Top Packers and Liner Tieback Systems with Liner Hanger Assemblies. We also provide Bridge Plugs and Cement Retainers. Our completion engineers bring over 100 combined years of tested experience to any well.