A numerical study of dynamic response of crane semi-submersible along TLP in tender-assisted drilling operation

Dynamic response for tender-assisted drilling is crucial due to the safety concern and impact on operability. Notably, the hydrodynamic interaction between two free floating units is believed as the main factor that threatens the operation. However, this urgent issue has not been thoroughly studied yet. We aim at establishing an accurate and efficient numerical model to compute the coupled dynamic response between crane SEMISUB and alongside tension leg platform (TLP). In terms of crane and lifting, an ideal pendulum model is employed; the lifting cargo is assumed as an independent mass-body in the air. The important physical variables e.g. the load motion at boom tip location, swing angle and tension are computed. The impact of cargo weight and sling length are investigated parametrically through sensitivity study. The time-domain analysis is performed in order to study the response under irregular waves, and the standard deviation as well as the most probable maximum value by Weibull distribution fitting are obtained.

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  • English

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  • Accession Number: 01677163
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 10 2018 3:01PM