Method and device for establishing a borehole in the seabed

摘要

A method and device for establishing a borehole (26) in the seabed (4), comprising setting of a conductor (1), wherein the method is characterized in that it comprises:—providing the conductor (1) with a suction module (6);—then lowering the conductor (1) down to the seabed (4); and—displacing the conductor (1) down into the seabed (4).

主权项

1. A method for establishing a borehole in a seabed, the method comprising:
setting a conductor; providing a surrounding base that is fixedly connected to the conductor; providing a suction module at a top end of the conductor; providing a pump being in fluid communication with the conductor, the pump having an outlet that is connectable to a pipeline extending to a surface of the sea or to a waste disposal on the seabed; connecting the conductor to a drill pipe and then lowering the conductor down to the seabed; displacing the conductor down into the seabed until the fixed surrounding base bears against the seabed; and creating the borehole such that drilling fluid and drilling out mass flow back via the borehole and the conductor to the pump.