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Light Well Intervention

Plan better and achieve your downhole objectives faster with reliable and efficient access to live, deepwater wells via our light well intervention (LWI) solutions.

The interchangeable riserless intervention system (IRIS) and the Blue Ocean riserless intervention system (BORIS) are designed to perform reliably in depths to 10,000 ft (3,000 m) and pressures to 10,000 psi.

Interchangeable Riserless Intervention System (IRIS) | Letter
Blue Ocean Riserless Intervention System (BORIS) | Letter
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Proven Well Access Capabilities

We have a successful track record running the IRIS system in a variety of common and atypical downhole scenarios. The system is integrated with a custom-fit subsea intervention lubricator (SIL) and is run using a deepwater umbilical with a pulling capacity of up to 20 tons.

Our fully integrated LWI systems offer the industry’s broadest functionality, resulting from extensive field experience and post-deployment analysis. We have achieved multiple industry firsts in riserless LWI.

  • The world’s deepest water depth for riserless intervention—8,200 ft (2,500 m)—with both slickline and e-line
  • The industry’s first riserless, live in-flow testing
  • The first use of a 5/16-in e-line

Solving Your Subsea Challenges

Our systems have been deployed to support various intervention activities.

Well int img 1
  • Running slickline, e-line, and braided wireline
  • Milling, stroking, and tractor running
  • Running, setting, and pulling tubing and trees
  • Setting and removal of plugs
  • Pumping cement plugs
Well int img 2
  • Actuating sliding sleeves
  • Plug and abandonment
  • Logging while flowing
  • Perforating
  • Fishing and bailing

Development of coiled tubing applications is underway to support your pill spotting and targeted acid treatment objectives.

Hydraulic and Mechanical Intervention

Our hydraulic LWI system enables you to achieve critical well stimulation objectives, effectively restoring or enhancing production from subsea wells. We use hydraulic actuation to access live wells and carry out prescribed acidization or other light intervention programs.

During mechanical LWI, proprietary equipment and tool designs enable increased recovery while reducing costs in a wide range of subsea scenarios. We use fit-for-purpose wireline tractors, milling, and logging tools, and gauge rings to perform a wide range of tasks.

  • Subsea well and infrastructure diagnostics
  • Sliding sleeve intervention
  • Remediation on damaged wells
  • Plugging and abandonment
  • Workovers

Each hydraulic or mechanical LWI operation is planned, deployed, and overseen by our experienced subsea engineers and technicians, downhole wireline engineers, and project managers. Our teams provide full-time site supervision and engage in close customer collaboration while adhering to rigorous QA/QC standards.

Featured Case Studies

Explore how our services and technologies are solving customer challenges globally.

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Oceaneering Completes Riserless Live Well Production Logging and Inflow Testing

Oceaneering Completes Riserless Live Well Production Logging and Inflow Testing

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Riserless Light Well Intervention Reveals Extent of Production Tubing Damage

Riserless Light Well Intervention Reveals Extent of Production Tubing Damage

Mechanical system identifies multiple thru-tubing leaks and enables effective remediation in subsea well.

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Oceaneering offers best-in-class products and solutions, backed by unparalleled quality, reliability, and global support. Fill out the inquiry form to start a conversation today.