[MIS32-P14] Making of large scale ice block simulating shallow type methane hydrate for performance confirmation of submarine drilling rig
Keywords:methane hydrate, ice, drilling rig
Unconfined compression tests were performed for ice frozen in a water tank, commercial ice, and ice frozen under various conditions in laboratory. As a result, the similar compressive strength was obtained regardless of the frozen method. In addition, the strength of ice was similar or slightly higher than that of natural MH (Yoneda et. al., 2019). Furthermore, the stiffness of ice was higher than that of MH. Therefore, it was found that the performance confirmation test of the drilling rig was possible using the ice prepared by the method of this study.