ConocoPhillips was awarded Chukchi Sea leases in February 2008. The initial assumption for Exploration drilling was to use a drillship with a Subsea Blowout Preventer. This is how the previous five Chukchi Sea wells were drilled in 1989, 1990, and 1991. An average open water season, approximately 100 days, and ice alerts advancements, primarily detection based, would allow the use of different type Mobile Offshore Drilling Unit (MODU). This paper will describe how hazardous ice was defined for a particular MODU and its associated ice alerts system. Key areas of focus will be the use of high resolution radar in detecting hazardous ice, delineation of the open water season and planned ice alerts system.

This content is only available via PDF.
You can access this article if you purchase or spend a download.