Apparatus for wiping the interior of pipes
Assignee2K Tech AS
InventorsKetil Botnmark, Kjell Mikalsen
Life of this patent
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Abstract
An apparatus is provided for cleaning a drill string of drilling mud during tripping, the apparatus being provided with a mass and a volume such that it is able to float on a surface of the drilling mud in the drill string during the tripping operation. The apparatus includes a wiper device which is bellows-shaped, and a weight which is fastened to the top of the wiper device.
Claims5
An apparatus for cleaning drilling mud from the interior surfaces of drill pipe of a drill string during tripping, the apparatus having a mass and a volume such that it is able to float on or about surface of the drilling mud in the drill string during the tripping operation, the apparatus comprising:
- a wiper device, having a bellows-shape;
- and
- a weight at or adjacent the top of the wiper device, configured by the gravitational force of the weight to compress the wiper device so that it expands towards the interior surfaces of the drill pipe to urge the wiper device against the interior surfaces of the drill pipe so that the wiper device can wipe the interior surfaces of the drill pipe.
Dependencies are inferred from the claim text.