The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2014
Filed:
Jan. 10, 2013
Farzan Parsinejad, Houston, TX (US);
Antonio Carlos Falcao Critsinelis, Kingwood, TX (US);
Sid A. Mebarkia, Sugarland, TX (US);
Christopher Allen Kassner, Houston, TX (US);
Farzan Parsinejad, Houston, TX (US);
Antonio Carlos Falcao Critsinelis, Kingwood, TX (US);
Sid A. Mebarkia, Sugarland, TX (US);
Christopher Allen Kassner, Houston, TX (US);
Chevron U.S.A. Inc., San Ramon, CA (US);
Abstract
Disclosed is a pig assembly for maintaining a functional line for conveying fluid. In one aspect, the pig assembly includes a larger diameter pig having an internal compartment and at least one smaller diameter pig adapted to fit therein. The larger diameter pig is capable of passing through a larger diameter functional line and the smaller diameter pig is capable of passing through a smaller diameter functional line. In another aspect, a method for maintaining a functional line for conveying fluid is provided which includes pigging a subsea line having at least a larger diameter functional line and a smaller diameter functional line in fluid communication with one another using a pig assembly as described herein.