Rigless Subsea Access System
Currently in development, our Rigless Subsea Access System will be the lightest intervention system on the market, weighing in at just 4 tonnes.
The first RSAS will be designed for live well operations in shallow water up to 300m, with a working pressure of 5,000psi, ideal for assets in mature basins.
The system includes:
- Intervention System Unit
- Integrated Compact Shear-Seal (CSS) BOP
- Control package
An increasing need for light well intervention solutions for shallow subsea assets that save time and cost has been the driver for what is set to be a game-changing innovation.
The RSAS captures all of Unity’s experience and proven intervention technology and applies it to subsea wells.
Benefits
- Lighter: 4 tonne rigless and riserless Subsea Access System for simplified handing and deployment and less stress on the wellhead (vs 10-70 tonne alternatives).
- Faster: Lightweight open-water deployment leads to a greater choice of vessels, significantly reducing lead time. Size and weight allow faster mobilisation.
- Multipurpose: Shearable intervention rods convey a range of downhole tools to perform multiple operations
- Standalone: Includes safety packages and controls, requires no 3rd party equipment package /interface / system.
- Lower Cost: Surface technology reengineered for shallow subsea operations. Eliminating the need for rig hire or heavier weight intervention and control systems.
- Lower Risk: Less equipment, deck space, POB and easier transport and handling.
- Lower Emissions: In manufacturing, assembly and operation, from lighter equipment handling and transport, mobilising lighter vessels and less POB.
Flexibility Tailored to Your Needs:
- Vessel – Cat A (wireline) or B (coiled tubing intervention/ workover) LWIV or vessel of opportunity.
- Conveyance – cable/ wireline
- Applications – shallow well inspection; access verification; drift runs; calliper measurement; plug, straddle or valve setting and retrieval; cleanout/ debris removal.
- Controls - ROV or hydraulic umbilical
As industry needs change, Unity will look to develop the RSAS to service deeper water projects.
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