发明名称 |
Overvåkning av tilstopping |
摘要 |
<p>A method of controlling occurrence of slugging in a riser of a pipeline arrangement including a riser base and pipeline conveying a multiphase fluid system in which the gas phase may be natural gas. The upper end of riser is connected to a separator vessel. The gas phase of the multiphase fluid system is separated from the liquid phase so that the separated gas leaves through gas outlet pipe controlled by a first valve, and the liquid leaves through an outlet pipe controlled by a first valve. The first valve regulates the velocity of gas along the pipeline towards the riser. A pressure sensor observes the gas pressure in the riser base, and if the observed pressure exceeds a predetermined control pressure value a three term pressure indication control causes the first valve to be operated to pen to an extent that increases the gas outflow through the pipe, and thus increases the velocity of gas in the pipeline to avoid occurrence of severe slugging in the riser. The observation of the predetermined control pressure value is deemed to signify incipient slugging.</p> |
申请公布号 |
NO20023413(D0) |
申请公布日期 |
2002.07.15 |
申请号 |
NO20020003413 |
申请日期 |
2002.07.15 |
申请人 |
LATTICE INTELLECTUAL PROPERTY LTD |
发明人 |
MOLYNEUX, PETER DAVID;KINVIG, JOHN PAUL |
分类号 |
E21B43/01;E21B43/12;E21B43/34;F17D1/00;(IPC1-7):E21B |
主分类号 |
E21B43/01 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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