A European EPC contractor returned to Envirent after a successful collaboration in 2021, this time needing a compact SSIV basket for cleaning and pressure‑testing a subsea actuator. Envirent supplied a...
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Backpack Tray – DWVP
Typical Operations
- Tooling Operations
- Valve Control Operations
- Subsea Fluid handeling
- ROV Intervention tasks
Features
- 4-station valve pack
- 3x 16L Compensators
- Integrated flowmeter
- Start/stop valve
- VJU Software integration
The backpack system is a compact subsea module designed for ROV-based valve and tooling operations. It includes a 4-station valve pack, 3x 16L Compensators, Dirty Work Pack (DWP), flowmeter, start/stop valve, and a dedicated valve pack (DWP-VC) for displacement control.
The DWP is powered from the ROV main hydraulic system and requires high pressure and flow. A start/stop valve controls operation and must be continuously pressurized (minimum 20 bar) to remain open. As there is no upstream flow control, the supply flow must not exceed 167 L/min to avoid damage. The system also features dedicated return ports for drain and return from a Ø55 3-port valve stab. The flowmeter and DWP-VC are integrated into the ROV control system and visible in software.
Track record
Reservoir basket with integrated hose reel for barrier-testing a multiphase flow meter
A North Sea operator who had previously completed a similar operation with Envirent in 2022, came back for a reliable pumping solution to flush and barrier‑test a multiphase flow meter. Envirent...
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