Research on the Integration Design of Double Well Head Drilling System for Semi-submersible Drilling Platform

In order to upgrade the capability in offshore drilling and exploring, it is imperative to design and study deep water drilling system. Firstly, surveying and researching the present situation and development status of deep water drilling system. Secondly, analysing the characteristics and configuration of the deep water drilling rig used for semi-submersible drilling platform, also selecting key equipment. Finally, designing and coming up with a dual-frame derrick drilling system with 3660 meters water depth and 15250 meters drilling depth, compared with the trade technology, its advantage: achieving top drive core and realizing continuous drilling, allowing duplex main wellhead operation, the two wellhead could be working at the same time, and a well is being used to piping, and another well is being used for drilling. As a result of saving the non-drilling time and increasing the drilling efficiency. It is of great significance to the development of marine energy sources.