ELSA-LB System
Expro’s ELSA®-LB landing string assemblies are designed for direct hydraulic (DH) and electro-hydraulic (EH) completion and intervention applications. They interface with all mono-bore completions in both horizontal and conventional subsea production tree systems.
Reliable Subsea Completion and Intervention
The ELSA®-LB includes a full suite of valve assemblies, lubricator valve, retainer valve, and subsea test tree, delivering well intervention, pressure control, and disconnection capabilities for demanding subsea operations.
Applications
- Completion installation, workover, and intervention on subsea xmas trees from MODUs in water depths up to 10,000 ft (3048 m)
- Drill stem testing, well clean-up, and extended appraisal requiring large flow bore
- Batch completion campaigns with minimal redress between runs
Benefits
- Provides a primary subsea barrier between well and surface during operations
- Enables controlled well operations without requiring BOP function
- Safe disconnect/re-latch of MODU in adverse conditions
- High reliability with minimal maintenance, reducing rig downtime
- Electrical feed-through for surface readout
- Compatible with EXPRESS subsea control systems or direct hydraulic (DH) operation
- Chemical injection capability into production bore
- Pump-through functionality for well equalisation or bull heading
Available configurations include:
- ELSA 7 3/8
