Cantilever load chart is a critical item of data to instruct a jack-up manager to operate safely. The structures and loads characteristics were mainly analyzes for ＂X＂ type cantilever, and mechanics model was simply built. With the restriction of maximum moment capacity of cantilever single side beam, the relationship was found between different positions of cantilever and drill floor and the loads such as wind force, setback weight etc. Having referred to several typical posi- tions＇ design loads value,the cantilever load chart was easily planned by some suitable interpola- tion method. A practical example shows that the planning method is of proper theory and makes the calculating rapid and reliable.
Oil Field Equipment