Subsea intervention and workover

Subsea intervention & workover

Our intervention & workover offering allows safe well access for subsea well installation and completion, diagnostics, maintenance, repairs and enhanced production – and finally plugging and abandonment.

Through our Subsea Services Alliance we unify surface, subsea, and subsurface capabilities to deliver the most high-performing subsea intervention and decommissioning solutions in the industry. This state-of-the-art approach maximizes economic recovery while lowering costs.

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OVERVIEW

Why OneSubsea intervention & workover?

Through our alliance with Helix, we leverage an unmatched fleet of dedicated subsea intervention vessels, a global network of experts, and an unrivaled portfolio of well access technologies, innovative digital tools, subsea reservoir performance services, and production chemistry to maximize your returns.

Additionally, OneSubsea offers market-leading riser-based open-water systems, turnkey landing string solutions for jackup and conventional rig applications, capping and containment solutions, and riser-less well intervention systems – helping you enhance production while minimizing downtime.

Workover risers

OneSubsea provides the complete workover riser system, including installation workover control system (IWOCS), riser, emergency disconnect package (EDP), and the lower riser package (LRP).

Deepwater conditions

We can provide systems in deep and ultradeep water environments, including 10,000-psi and 15,000-psi pressure ratings.

Fully compatible subsea interfacing

The multiple application reinjection system (MARS) ensures the subsea injection skid can operate with any subsea interface.

Full flexibility

Our workover systems can be used on any subsea tree from any vendor, in any conditions and at any water depth.

Core benefits

Subsea intervention can be challenging – the operating environment, well conditions, and economic viability all pose a risk to successful performance. We meet these challenges by providing reliable, innovative, and proven subsea well access systems that enable fit-for-purpose subsea intervention and workover services.

Optimized products

We focus on ensuring quick rig integration, efficient operations and easy maintenance.

Fully customizable

We reduce costs by offering a standardized selection of products, but we also supply custom designs and our modular design enables shorter lead times and greater flexibility.

Focus on interchangeability

Our products feature cross-vendor and cross-field interchangeability, and we also provide comprehensive lifecycle support.

Our product portfolio

Subsea landing strings

Efficient, reliable access to any subsea well over the life of your field

Efficient, reliable access to any subsea well over the life of your field View
Subsea reinjection systems

Our reinjection systems serve as a universal interface for all trees, both topside and subsea

Our reinjection systems serve as a universal interface for all trees, both topside and subsea View