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US 12,509,949 B2Granted
Device for centring and/or pulling a tool in a pipeline
AssigneePetroleo Brasileiro S. A.-Petrobras
InventorsHugo Francisco Lisboa Santos, Ney Robinson Salvi Dos Reis, Igor Mendes Ursine Krettli, Hardy Leonardo Da Cunha Pereira Pinto, Lincoln Homero Thome Ferreira, Mauricio Galassi
Life of this patent
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Abstract
The present invention relates to a device for centring and pulling a tool in a pipeline, the device comprising expanding arms, with each expanding arm comprises a wheel suitable for making contact with an inside wall of a pipeline, wherein each wheel comprises at least one magnetic element.
Claims15
A device for centering and pulling a tool in a pipeline, the device comprising:
- a first expanding arm comprising a first elastic element and a second elastic element;
- a second expanding arm comprising a third elastic element and a fourth elastic element, wherein a distal end of each of the first elastic element and the third elastic element is coupled together to a first linkage at a first end of the tool, wherein a distal end of each of the second elastic element and the fourth elastic element is coupled together to a second linkage at a second end of the tool opposite the first end;
- a first wheel coupled to a proximal end of each of the first elastic element and the second elastic element;
- and
- a second wheel coupled to a proximal end of each of the third elastic element and the fourth elastic element, wherein each of the first wheel and the second wheel is suitable for making contact with an inside wall of a pipeline, wherein each of the first wheel and the second wheel comprises at least two magnetic elements embedded on an outer surface of each wheel, wherein each magnetic element is configured to remove an oil film coating the inside wall of the pipeline upon contact of a corresponding wheel with the inside wall of the pipeline.
2 more elements
A device for centering and pulling a tool in a pipeline, comprising:
- a plurality of wheels, wheels configured to contact an inside wall of the pipeline;
- a plurality of expanding arms, wherein each expanding arm of the plurality of expanding arms is coupled to a respective wheel of the plurality of wheels via a first elastic element and a second elastic element, wherein the respective wheel is located at an apex of a convex curve formed by the first elastic element and the second elastic element relative to a movement axis of the tool;
- and
- a plurality of magnetic elements coupled to each wheel of the plurality of wheels such that each wheel comprises at least two magnetic elements of the plurality of magnetic elements, each magnetic element being configured to:
- (i) cause a corresponding wheel of the plurality of wheels to maintain contact between the corresponding wheel and the inside wall of the pipeline, and (ii) expel an oil film at a contact point between the corresponding wheel and the inside wall of the pipeline.
2 more elements
Dependencies are inferred from the claim text.