... Abstract For Deep Sea Mining (DSM), the current concept for the Vertical Transport System (VTS) has multiple lines for the return of water to the sea bottom. Such VTS resembles a drilling riser, which is a field-proven technology. Our objective is to compare a drilling riser with different...

... Abstract A Free Standing Drilling Riser (FSDR) is a modification to drilling risers that enables rapid disconnection in an event of a typhoon. Air cans were installed to keep the drilling riser standing upright at its original location whilst the drilling rig sails away to safety...

... lengths are analyzed in the case study. Also, combination effect of driving speed and drilling vessel heading is considered in the case study. This paper summarises the related experience of CNOOC about how to response to typhoon in hang-off mode. riser joint deepwater drilling riser retrieve...

.... With the associated high cost, connection integrity with emphasis on safety, operational efficiency gains, accuracy and reliability while ensuring cost savings is essential. Threaded, ultra-high torque specialty drilling riser further pushes the limits of tubular running technology with both torque and non-marking...