METHOD OF CONSTRUCTION OF SELF-LIFTING OFF - SHORE DRILLING PLATFORM Russian patent published in 2008 - IPC E02B17/00 

FIELD: construction.

SUBSTANCE: construction method of a self-lifting drilling platform containing a pull-out console accommodating subsea wellhead equipment includes manufacturing of a console of sectional longitudinal bearing and boxlike transverse beams with railings. Whereat additional sections of longitudinal bearing beams are manufactured and extended by previously made sections, whereat aggregated length of longitudinal bearing beams is extended by the value adequate to the spacing in the boreholes network. After that longitudinal bearing beams are retracted up to the value sufficient for fastening on them of subsea wellhead equipment placed in the cross plane of the console. Then, previously made boxlike cross beams accommodating railings are set on the longitudinal bearing beams; and their length is increased by means of welded to them at the ends boxlike extensions, whereon additional parts of railings are arranged.

EFFECT: decreased labor intensity of works during construction of self-lifting offshore drilling platform on the bases of the already manufactured one for widening its operational possibilities including that for drilling of greater number of boreholes along with improving storage conditions for subsea wellhead equipment and simplification of its transfer to the wellhead.

3 cl, 7 dwg