Tech Paper Transitioning from Rig to Vessel Based Interventions to Maximize Economic Recovery
Technologies and techniques to reduce the cost of subsea interventions and hence, total cost of ownership.
Riserless Open-Water Abandonment Module
Environmentally aligned production tubing removal in open water
The riserless open-water abandonment module (ROAM) is our proprietary solution for environmentally compliant removal of production tubing in open water.
When run as a complement to the intervention riser system (IRS) or subsea intervention lubricator (SIL), ROAM enables capturing contaminants or gas within the system and circulating them back to the high-security handling systems onboard the vessel. This proven approach delivers high confidence that nothing unwanted is released into the environment.
The 18 3/4-in fullbore ID enables pulling tubing hangers through the ROAM to surface.
Operational safety is further enhanced by the two ROAM barriers capable of shearing and sealing landing strings and production tubing that will pass through the system during recovery.
| Specifications | |
|---|---|
| Maximum bore diameter | 18 3/4 in; 2-in circulation line |
| Maximum working pressure | 10,000 psi [68.9 MPa] |
| Maximum working depth | 10,000 ft [3,000 m] |
| Hydraulics operating pressure | 3,000 psi [20.7 MPa]; 5,000-psi [34.5-MPa] subsea accumulation |
| Weight | 250,000 lbm [113,000 kg] |
| Well barrier type |
One 10,000-psi annular BOP Two 10,000-psi DVS rams Two 10,000-psi 2-in fail-as-is valves |
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