Subsea Rotating Control Device Apparatus Having Debris Barrier

A method of sealing against a tubular passing through an internal passage of a riser, the method comprising:

• inserting a running tool into an inner bore of a body at surface, the body having at least one annular seal in the inner bore;
• affixing a debris barrier on an uphole end of the body about the inserted running tool;
• installing the body having the debris barrier and the at least one annular seal in the internal passage of the riser using the running tool;
• removing the running tool from the set body;
• passing the tubular through the debris barrier uphole of the at least one annular seal in the internal passage of the riser;
• sealing an annulus between the tubular and the inner bore of the set body with the at least one annular seal in the internal passage;
• and
• inhibiting debris uphole of the debris barrier from passing to the at least one annular seal.

An apparatus for a riser, the riser having an internal passage through which a tubular passes, the apparatus comprising:

• a body installing in the internal passage of the riser and defining a bore therethrough from an uphole end to a downhole end, the body having an external surface disposed about the uphole end;
• at least one annular seal supported in the bore of the body, the at least one annular seal engaging the tubular passing therethrough and sealing an annulus between the tubular and the bore of the body;
• and
• a debris barrier disposed on the uphole end of the body, the debris barrier having a sidewall and a cover, the sidewall disposed about the external surface of the body, the cover extending from the sidewall to a central opening defined in the cover, the cover covering an annular area from a perimeter of the bore of the body toward a center of the bore, the debris barrier inhibiting debris uphole of the debris barrier from entering into the bore.