These landing string assemblies are designed for direct hydraulic (DH) completion and intervention applications and interface with all mono-bore completions when used in conjunction with horizontal and conventional subsea production trees.

The ELSA-DH product line was introduced into the field over 10 years ago and Expro has established an extensive track record with more than 500 interventions successfully completed.  Operating a fleet of more than 30 systems, we are capable to provide subsea services around the world.

The design of these systems are based upon the ELSA-EA design, but incorporates control ports enabling tubing hanger, tubing hanger running tool and other downhole functions such as SCSSV, chemical injection, sleeves to be controlled or monitored.  In addition electrical cabling can be run through the system to monitor downhole gauges or electrical submersible pumps during deployment.

The system internal diameter is increased up to 7.3/8 inch enabling wireline plugs used for vertical bore isolation in the tubing hanger and tree cap to be installed and retrieved.  Any secondary systems (disconnect, ball closure) are hydraulic activated by application of pressure in ram cavities below pipe or shear rams.

The major components of the landing string are:

• Tubing Hanger Running Tool Adapter
• Subsea Test Tree
• Shearsub
• Retainer Valve
• Annular Slickjoint
• Lubricator Valve
• Surface Tree

In addition Expro also provides umbilicals, reeler and surface control systems, allowing our clients to single source subsea safety systems and operating services.

Datasheet: ELSA-DH