Complete engineering and equipment support solutions.
The challenge:
Maintaining functional and physical integrity when joining multi-core subsea umbilical assemblies.
Design a small, lightweight, and reliable subsea housing for a variety of applications including power and signal distribution, transformer voltage matching, and signal monitoring.
Power and communications for subsea control systems are transmitted through electrical umbilicals from the surface (platform, FPSO) to the seabed, and between the various control modules, wellheads, valves, and sensors on the seabed. These signals are distributed on the seabed using the Electrical Distribution Box (EDB).
The integrity of these devices is crucial for the reliable long-term production of oil and gas from the wells. The cost of intervention in the event of a failure can run to hundreds of thousands of pounds, so the emphasis has to be on getting it right first time.
As more and more subsea developments move into ever deeper water, these devices have to be installed and hooked up without diver intervention. The installation and hook-up must be reliable and fast.
Design and manufacture subsea enclosures, cable harnesses, and connections for Expro for their novel AX-STM subsea wireline intervention system.
Safe and reliable interconnection of the modules that distribute high power throughout the tool is essential for the operational effectiveness and success of the system.
The project was already well established when J+S became involved, and everything had to be delivered to a demanding specification and schedule.
The Problem:
One of our customers started to experience insulation resistance problems on one of their subsea control systems. J+S sent technicians offshore with IR and TDR test equipment to assist in the diagnosis and isolation of the problem. The fault was traced to the electro-hydraulic subsea distribution unit which had to be replaced quickly and with minimum disruption to production.
