Petroleo Brasileiro S.a. - Petrobras

Fernando Borja Pereira

Antonio Carlos Ferreira Lino

Enio Costa Nunes

Marcelino Guedes Ferreira Mosqueira Gomes

The present invention relates to a device for scraping the inner walls of a pipeline. The device comprises a flexible shaft, a plurality of groups of flexible radial scraping bars which are spaced apart and offset angularly so that the said bars are able to scrape substantially the entire inner surface of the said pipeline, and at least one flexible sealing module.

Modular multisize bidirection scraping device

The present invention relates to a device,for scraping the inner walls of a pipeline. The device has (i) a flexible shaft,of elastomeric material, (ii) a plurality of groups of flexible radial scraping bars,which are spaced apart and offset angularly so that the bars are able to scrape substantially the entire inner surface of the pipeline, and (iii) a flexible covering,which coats the entire assembly formed by the said flexible shaft and by the bars, with the exception of the outer ends of the bars.

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Rio de Janeiro, Brazil

Fernando Borja Pereira