A global EPC contractor needed to clear reinforced rubber diaphragms from a series of J‑tubes before installing new risers and an umbilical. The standard J‑tube diaphragm cutter wasn’t sized for...
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J-TUBE Diaphragm Cutting Tool
Typical Operations
- Cutting Operations
Features
- Hydraulic Milling Tool
- Manipulator Rotation
- Low Weight
- ROV Friendly Design
- Cutting OD Ø318mm (long version)
- Cutting OD Ø462mm (long version)
- Cutting OD Ø552mm (short version)
- 4 off extra D-handles for rotation on the longer versions.
The J-tube Diaphragm Cutting Tool (DCT) are designed to fit specific sized J-tubes and cutting out the reinforced rubber diaphragms without damaging the tube.
The DCTs are primarily designed with aluminium and POM to keep a low weight. The tool body works as a guiding frame inside the Bellmouth.
The milling bit is rotated with an hydraulic motor, and tool is rotated with the manipulator to cut around the whole diaphragm. Other sizes available for manufacturing on request, to make it fit the dedicated J-tube.
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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Integrated grease pump basket for subsea maintenance (IMR)
A subsea contractor needed to inject grease into rotating components during an IMR operation in the North Sea and returned to Envirent after a positive experience on a previous project. Envirent...
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