Patent ID: 6792641
Filing Date: 2004-09-21
Classification: B08B

Abstract:
A pig for use in a tubular bore, comprising:a cylindrical elongate body; one or more blades mounted on the body, wherein each blade comprises one or more reaction surfaces, and wherein each surface comprises a peripheral edge configured to perform a rotational cleaning action for removing scale and other deposits located on an internal surface of the tubular bore, and each blade further comprises at least one fluid by-pass path through the blade to permit a flow of fluid to pass the pig, wherein each blade is manufactured from a composite comprising para-aramid fiber produced from poly-paraphenylene terephthalamide and further wherein each blade is also configured to cause the longitudinal axis of the pig to orbit about a substantially parallel axis of the tubular bore when a pressurized fluid pushes the pig through the tubular bore.