Wellhead Integrity Monitoring with SWIM™

For cost reduction and risk management. Subsea Wellhead Integrity Monitoring (SWIM™) maximises the value of well slots and reduces the cost of rig operations. The system provides integrity status and forecasts during drilling and well interventions, reducing risk and supporting operations. No extra personnel are required on the rig.

4Subsea has received the 2018 Product Leadership Award from analyst company Frost & Sullivan for SWIM™.

Wellhead integrity monitoring

Typical Challenges for Operators


Do any of these apply to your drilling operations?
  • You don’t have a simple way to install a sensor system to signal possible loss of well integrity while drilling
  • You want to use real sensor data of BOP movements to replace conservative assumptions used in analyses (conservatism that may be preventing or complicating a planned operation)
  • You want to monitor the live flex joint angle while running tools to allow for an increased operating window
  • You need to use sensor data from a well to enable operations on similar wells
  • You lack a good, simple method to record the actual loading on a well over its life


SWIM™ is a well documented and tested solution for monitoring the main barrier while drilling. 4Subsea has provided wellhead monitoring services on more than 50 drilling and completion campaigns for the main oil and gas operators. The same system can also be extended to provide live monitoring of drilling risers and conductors.

Lead Engineer, Well Operations, STATOIL:
“A logging system was required as a compensating measure to reduce risk for the Tyrihans A-2 operations. We would not have been able to re-use the A-2 slot for a side track without this risk reducing measure. The alternative would have been to drill a new slot.”


The 4Subsea team is very proud to inform that we have received the 2018 Product Leadership Award from analyst company Frost & Sullivan for our SWIM™ sensor solution.

“With the new wave of digitalization and emergence of Industrial Internet of Things (IoT), it is set to transform the traditional oilfields into digital oilfields (DOF). 4Subsea’s SWIM is embedded with intelligence and connectivity that serves as a critical tool in the operator’s decision-making process.

Kiravani E, Senior Research Analyst, Frost & Sullivan, February 2018



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Key Benefits

  • Monitors stability, load, fatigue, and structural integrity of the wellhead system
  • Avoids abandoning wells due to uncertainties about wellhead integrity or conductor stability
  • Avoids unnecessary down time due to moving BOP/conductors/wellheads
  • Helps enable operations on wells with wellhead integrity concerns
  • Can be used for exploration, greenfield, and brownfield wells
  • Presents status and results on a web application for rig crew and onshore organisation
  • Can be configured to provide live readings at any depth without the need for an ROV


Installation and Data Transfer

  • 3 high quality, battery powered motion sensors installed on BOP

  • Sensors are installed and retrieved by ROV or while BOP is on deck

  • High speed data transfer to wireless ROV modem

  • Compressed and full data series can be transferred during monitoring campaign

  • Acoustic data transfer and alarms as required

  • Water depth rating: 3000m
  • Live monitoring with cable to surface if required


Download the relevant technical data sheets from our Smart Monitoring Sensors (SMS) range

SMS GyroSMS Magic Hand

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