Production risers having rigid inserts and systems and methods for using
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Dec 26, 2017
Issued Date -
N/A
app pub date -
Apr 24, 2017
filing date -
Apr 24, 2017
priority date (Note) -
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Abstract
An apparatus enables modifying a riser's operating parameters for transporting production fluids from a subsea well to an offshore production facility after an initial period of production to address changes over time in the conditions of the reservoir and/or the riser without removing the original riser. An insert riser having a smaller diameter is inserted into the riser after the initial period. The original riser has a recessed seal face for receiving seal element(s) and a recessed lock groove for receiving a locking ring. An intervention coiled tubing having a sleeve removal tool is inserted into the riser to engage a protective sleeve covering the recessed seal face. The tubing is pulled to the floating structure thereby removing the protective sleeve and the temporary retaining ring from the production riser, exposing the recessed seal face. The insert riser can then be inserted into the riser and locked into place.
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