Realtime detection of wax, asphaltene and hydrate accumulation in pipelines

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What's the challenge? 

Subsea 7 are seeking novel approaches to the realtime detection of the contents of subsea pipelines, to allow for the early remediation of issues. 

Once a pipeline has lost communication between its end, the use of pigs is not possible to clear the line. In order to remediate the problem, the extent of the problem needs to be understood including its location.
 
If blockages cannot be cleared then the pipeline will be abandoned, however regulatory requirements require that for a pipeline to be abandoned in place, the pipeline must be cleaned. Localised cleaning and removal of contents is required.

Do you have the solution?

 Considered solutions should be able to meet the following requirements: 

  • To measure deposits from a range of one to two metres above the pipeline even when buried
  • Be able to be maintained and operated independent of a development company
  • Be able to work without the need for coating removal
  • Can operate on  a piggy back pipeline configuration
  • Can operate at high speed - one kilometre per hour
  • Can also detect corrosion and wall loss

Eligibility criteria

The solution must:

• Non-intrusively detect the location of deposition build up quickly without interrupting production
• Have real-time data on flow profiles
• Monitor changes in deposition for an enhanced understanding of remediation efforts
• Track the flow regime at specific reference points along the pipeline
• Quickly identify flow assurance issues that may need further investigation
• Quickly and non-intrusively locate any lost or stuck pigs
• Have the ability to be used at or developed to water depths from 0 metres to 3000 metres

System that can measure deposits from a range of 1-2metres above the pipeline even when buried
Able to be maintained and operated independent of development company
Able to work without the need for coating removal
Can operate on  a piggy back pipeline configuration
Can operate at high speed (1km/hr +)
Can also detect corrosion and wall loss