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Published in:
2018 | OriginalPaper | Chapter
Case Studies—Prediction of Offshore Jack-up Leg Penetrations
Author : C. R. Parthasarathy
Published in: Geotechnics for Natural and Engineered Sustainable Technologies
Publisher: Springer Singapore
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Abstract
The utilization of Jack-up rig for offshore exploration is significantly higher over the last decade and hope to increase in future despite the low oil prices for the last couple of years. Good prediction of spudcan bearing resistance in a problematic soil profile can shed light on precautionary measures that a rig contractor can adopt to facilitate a safe installation of spudcan. Nonetheless, the accuracy of the prediction is limited by the reliability of the interpreted soil strength parameters, lateral variability as well as the validity of the design method currently in use. It is imperative that high quality of sampling and testing methods is adopted, to evaluate the stratification/strength and arrive at a reasonable design profiles. This in aid of geophysical surveys will assist in evaluating the potential risks and the measures to mitigate the same.