BOTTOM PREVENTER FOR USE IN A DRILLING SYSTEM

摘要

A conduit assembly for use in a drilling system that may include an upper section, an intermediate section and a lower section. The upper section may include a first seal. The first seal may include an opening that may be sized and configured to receive and form a seal with an inner drill string. The first seal may include one or more slits that may extend from an outer edge of the first seal to the opening of the first seal. The intermediate section may include an outlet for a flushing medium. The outlet may include a projection that may extend into a hollow interior of the intermediate section. The lower section may be sized and configured to be connected to and disconnected from a connecting portion of an outer drill string. The lower section may be sized and configured to be connected to and disconnected from the intermediate section.