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Subsea vehicle assisted pipeline commissioning method

  • US 20020129641A1
  • Filed: 06/26/2001
  • Published: 09/19/2002
  • Est. Priority Date: 03/13/2001
  • Status: Active Grant
First Claim
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1. A method of dewatering a pipeline between two subsea manifolds using a source of compressed gas at one of said manifolds having a subsea pig launcher/receiver with a pig therein comprising:

  • connecting a line from said compressed gas source to said pig launcher/receiver for flow of compressed gas to force said pig to said other manifold; and

    connecting a dewatering pump which is subsea near said other manifold to draw water from said pipeline and move said pig and compressed gas through the pipeline to said manifold.

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