Inventors:
James L. Dean - Spring TX
Richard Weser - Houston TX
Karl Winter - Houston TX
Assignee:
Oceaneering International, Inc. - Houston TX
International Classification:
B08B 904
US Classification:
405158, 4051841, 151045, 1510461, 1510462
Abstract:
A pig launching system and a pig receiving system for use in cleaning a subsea flowline. This invention further relates to a method of propelling a pig through a flowline using a pressurized accumulator, a method of assembling a subsea pig receiver in a flowline using a remotely operated vehicle, and a method of collecting a sample from a subsea flowline, using an accumulator connected to a pig launcher.