OPERATIONS

New depth record for electro-hydraulic subsea tree

THE Expro Group has deployed its electro-hydraulic EXpress deepwater sub sea test string in a wat...

The EXpress system was deployed, operated and retrieved successfully during the six day test on the Leiv Eiriksson DP vessel in August.

The Expro Group specifically developed its EXpress technology to meet the stringent safety and operational requirements of deepwater applications.

"As operators exploit ever increasing water depths, traditional direct hydraulic controlled subsea systems are unable to deliver the system shut in and disconnection response times required to match dynamically positioned drilling vessel.

The system combines Expro's field proven Deepwater Vent Pack technology with an electro-hydraulic control system to deliver superior response performance.

The system offers depth independence, where an electrical signal is used to activate the subsea system, removing the inherent depth time lag associated with hydraulic systems.

During the operation, full emergency disconnect trials were conducted using the primary electrical system controlled from the driller's remote unlatch switch and the main Surface Electrical Control Panel. Trials using both stations resulted in controlled shut-in and disconnection times of nine seconds.

TOPICS:

A growing series of reports, each focused on a key discussion point for the energy sector, brought to you by the Energy News Bulletin Intelligence team.

A growing series of reports, each focused on a key discussion point for the energy sector, brought to you by the Energy News Bulletin Intelligence team.

editions

ENB CCS Report 2024

ENB’s CCS Report 2024 finds that CCS could be the much-needed magic bullet for Australia’s decarbonisation drive

editions

ENB Cost Report 2023

ENB’s latest Cost Report findings provide optimism as investments in oil and gas, as well as new energy rise.

editions

ENB Future of Energy Report 2023

ENB’s inaugural Future of Energy Report details the industry outlook on the medium-to-long-term future for the sector in the Asia Pacific region.

editions

ENB Cost Report 2021

This industry-wide report aims to understand current cost levels across the energy industry