PROJECT

MALIKAI PROJECT – 2015
TENDER ASSISTED DRILLING ACTIVE WINCHING STUDY
DYNAMIC MOORING MAKE-UP ANALYSIS

CLIENTS

SCOPE OF WORK

Detailed Design Stage

• Adjust the mooring lines first segment length as such as each well slot on the TLP is centered directly above the corresponding subsea wellhead within some defined allowable horizontal offset
• Apply static environment (wind and current) in several directions and verify that the offset remains within the allowable excursion limits associated with a Riser Dog-Leg severity (DLS) of 2 deg/100 ft
• Apply dynamic environments to the found configurations and verify that the allowable values for the criteria are not exceeded

SPECIFICS

• The TLP is designed to be able to horizontally translate over a short distance by adjusting the pretensions on each of the 8 mooring lines on the Drilling Tender Vessel (DTV), and 2 holdback lines on the TLP
• Several criteria are to be applied: relative angle between the 2 vessels, minimum separation, allowable offsets of all kind, line safety factors, etc…
• Writting of an algorithm to automate the repositioning procedure
• 24 slots to study