Abstract: The present invention relates to an upper subsea wellhead surface joint, a lower subsea wellhead surface joint, an upper subsea wellhead conductor joint, and a lower subsea wellhead conductor joint. According to the present invention, these are machined from a single piece of forged steel material and corrosion protected by means of an electrolytic or other process.

Abstract: The present invention relates to an upper subsea wellhead surface joint, a lower subsea wellhead surface joint, an upper subsea wellhead conductor joint, and a lower subsea wellhead conductor joint. According to the present invention, these are machined from a single piece of forged steel material and corrosion protected by means of an electrolytic or other process.

Abstract: Subsea lubricator device, comprising a blowout preventer assembly, a tool housing assembly and a stuffing box, intended to be located at a subsea Christmas tree, and methods of circulating fluids in a subsea lubricator. The device comprises a blowout preventer (40) and a lubricator (60). Along the entire length of the device a bypass (46, 66) is located. The bypass communicates fluid with the device via a fluid connection (72) at the upper end of the tool housing and via a valve assembly (51) at the bottom of the blowout preventer. This permits removal of gas or oil being present in the device by circulating the hydrocarbons in the well.