Venting riser gas during a gas influx event relieves riser pressure and enables pit monitoring, but it can lead to uncontrollable discharge. A novel fixed-choke, constant-outflow (FCCO) method fixes ...

Full-bore isolation valves (FBIVs) and multicycle tools (MCTs) eliminate the need for installing a drilling rig with a completion riser during subsea tree installation, thus reducing the time and cost ...