Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Charles R. Yemington0
Date of Patent
May 4, 2010
0Patent Application Number
111522170
Date Filed
June 15, 2005
0Patent Primary Examiner
Patent abstract
The present invention is directed to a pig receiver used in a dewatering method for subsea pipelines. In the dewatering method a pig is placed in one end of the pipeline filled with water and a compressed gas is introduced behind the pig; in addition the water and pig are drawn by a subsea pump operated by a submersible vehicle (SV) operating near the sea floor to a pig receiver of the present invention. A feature of the pig receiver is a gas sensor that shuts the pump off when gas enters the receiver to prevent a gas (vapor) lock of the pump.
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