| 摘要 |
A method for handling a blow-out-preventer (356) on a drilling platform (300) and a drilling platform having a lower pontoon structure (310a, 310b, 310c, 310d); a plurality of columns (320a, 320b, 320c, 320d) extending upwards from the lower pontoon structure (310a, 310b, 310c, 31Od); an upper deck structure (340) connecting the upper portions of the columns (320a, 320b, 320c, 320d) to each other; a detachable rotary table assembly (352) arranged in a rotary table opening (342) in the upper deck structure (340); a derrick (350) provided with a lifting arrangement and being arranged on the upper deck structure (340) above the rotary table opening (342); and a detachable rotary table assembly (352) a spider (354) and a blow-out-preventer (356). The method is characterized by the steps of: detaching the rotary table assembly (352) from the rotary table opening (342); arranging at least the spider (354) on the blow-out-preventer (356); positioning the blow-out-preventer (356) so that the lifting arrangement of the derrick (350) can lower the blow-out-preventer (356) through the rotary table opening (342); lowering the spider (354) and the blow-out-preventer (356) into the rotary table opening (342) by means of said lifting arrangement, so that the blow-out-preventer (356) is passed through the rotary table opening (342) and so that the spider (354) is arranged in the rotary table opening (342) in an operative position for supporting riser pipes. ® KIPO & WIPO 2009
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