Intelligent production riser
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United States of America Patent
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Jul 3, 2001
Issued Date -
N/A
app pub date -
Dec 20, 1999
filing date -
Jan 21, 1999
priority date (Note) -
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Abstract
A production riser that provides the benefits of a slug catcher, riser based gas lift, and multiphase meter in a single device and is suited to both shallow and deep-water oil/gas field developments. The riser is formed from a pipe within a pipe. The inner pipe provides the path for the production fluids. Perforations are provided near the base and top of the inner pipe. The top of the annulus between the pipes is closed and is in fluid communication with a gas supply/compression system via an isolation control valve/choke. The bottom of the annulus is closed. Three sets of pressure and temperature transducer transmitters are installed at the top, center, and base of the riser through the outer pipe wall.
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