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Inspection: Savante concludes worlds first well-intervention using underwater laser scanner

Posted on 06.06.2012 - 15:04 EDT in INSPECTION NEWS (Subsea) by jamesmc

Savante writes:  

SavanteSavante, global leaders in subsea laser measurement and inspection, are proud to announce the completion of the worlds first underwater laser scan of a subsea wellhead.

 Savante were contacted directly by a major oil and gas operator after a general visual inspection (GVI) campaign detected an area of suspected damage on a wellhead sealing face. Video cameras placed within the well at that time using remotely-operated vehicles (ROVS) were unable to confirm the extent of the damage. Significantly, a well re-entry had been scheduled with a semi-submersible rig already en-route.


Digital stills image from onboard camera showing damage to a polished sealing face.



Dr. Grant Thomson, director of Savante was exceptionally pleased with the project outcome.  “Our task was to confirm the extent of any sealing face damage found within the wellhead.  We deployed a subsea laser scanner from the UK immediately and were standing-by in-field with our system integrated aboard an “ROV of opportunity” within 24 hours. We entered the wellhead and completed a 3D laser scan of the damaged area in 12 seconds, immediately providing our client with 3D cross section measurements through the damage to microscopic accuracy. This was supported with a close-up confirmation video provided by our onboard camera.”



Wireframe 3D model of sealing face indication.  Resolution is 20microns.  Cross-sections through the model are visualised in realtime.



Provided with an immediate 3D laser-scanned model of the damaged area, the client was able to focus on targeting a specific remedial sealing solution, well in advance of the arrival of the semi-sub.

To find out more about how Savante can improve upon your inspection, repair and maintenance operations, please contact us at:

Savante Offshore Services Ltd.
Riverside House
Riverside Drive
AB11 7LH

United Kingdom

T:   +44 1224 224 336

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