Internal riser rotating control head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 29, 2002
Grant Date -
N/A
app pub date -
Mar 1, 2000
filing date -
Mar 2, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system and method provides a barrier between two different fluid densities in a riser while drilling in deepwater. An internal housing and a rotating control head are positioned in a first housing when a blowout preventer is in the sealed position. When the blowout preventer is in the sealed position about the internal housing, a pipe can be rotated for drilling with the pressure of the fluid in the open borehole at one density and the fluid above the seal at another density. When the blowout preventer seal is in the open position, the threadedly connected bearing assembly and internal housing can be removed relatively quickly from the riser.
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