Technology from Europe: Command-activated sandface valve enables improved high-angle wellbore cleanup ///

The semisubmersible has been a workhorse of the offshore oil and gas industry for decades, and has served in multiple applications including as a mobile offshore drilling unit (MODU), as a multi-service vessel (MSV) and as a floating production unit (FPU). By far the most common application has been as a MODU. The first purpose-built drilling semisubmersible was the Ocean Driller in 1963. As of December 2009, there were 168 semisubmersible drilling vessels available for deployment worldwide in various water depths ranging from hundreds of feet to in excess of 10,000 ft.

Log in to view this article.

Not yet a subscriber?  Get started now for immediate access to this content and more.



Already a subscriber but don’t have an online account? Contact our customer service.