Well Operations from Vessels - Hazard Assessment

This is a report on the use of dynamically positioned vessels rather than mobile drilling units which is becoming more prevalent for intervention and maintenance of subsea wells.

Recently the range of vessels being considered to perform this work has expanded to include diving vessels, ice breakers, ROV support vessels and other specialized vessels in order to minimize costs.

The latter types may not have the equivalent dynamic positioning capability or level of redundancy associated with the classes of intervention vessels originally considered for use.

This trend towards lower costs coupled with new applications of technology may also introduce other low cost vessels into the market such as supply vessels.