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:
Oct. 19, 1999
Filed:
Sep. 19, 1997
Applicant:
Inventor:
Kenneth M Knapp, Houston, TX (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B08B / ;
U.S. Cl.
CPC ...
405211 ; 15104061 ;
Abstract
A tension leg platform in deep water over an underwater wellhead system supports an upstanding pig riser. The riser ID is smaller than the shoreline ID delivering produced oil to shore. The shoreline is pigged by a tapered nose pig inserted into the bell nipple at the top, open end to enable pig passage down the riser compressing the pig body. The body is formed of N discs and N foam donut spacers to clean the shoreline ID.