Cleaning a valve profile in a wellhead
AssigneeSaudi Arabian Oil Company
InventorsMustafa Karakaya, Sohrat Baki
Life of this patent
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Abstract
A back pressure valve (BPV) profile cleaning tool includes a brush assembly configured to attach to a BPV rod of a BPV lubricator tool and a second magnet configured to attach to an end of the BPV rod. The brush assembly includes a brush that includes a plurality of bristles and at least one first magnet. The brush further includes an outer diameter sized for insertion into a BPV profile of a wellhead. The second magnet includes an outer diameter sized to fit through the BPV profile of the wellhead.
Claims24
A back pressure valve (BPV) profile cleaning tool, comprising:
- a brush assembly configured to attach to a BPV rod of a BPV lubricator tool, the brush assembly comprising:
- a brush that comprises a plurality of bristles, the brush further comprising an outer diameter sized for insertion into a BPV profile of a wellhead, and
- at least one first magnet;
- and
- a second magnet configured to attach to an end of the BPV rod, the second magnet comprising an outer diameter sized to fit through the BPV profile of the wellhead.
A method for cleaning a BPV profile of a wellhead, comprising:
- running a BPV lubricator tool into a wellhead, the BPV lubricator tool comprising:
- a brush assembly attached to a BPV rod of the BPV lubricator tool, the brush assembly comprising:
- a brush that comprises a plurality of bristles and an outer diameter sized for insertion into a BPV profile of the wellhead, and
- at least one first magnet;
- and
- a second magnet attached to the end of the BPV rod;
- adjusting a length of the BPV rod to land the brush assembly into a BPV profile of the wellhead;
- operating the BPV rod to move the brush assembly within the BPV profile such that the plurality of bristles repeatedly contact a surface of the BPV profile;
- and
- during the contact, removing one or more debris from the surface of the BPV profile with the plurality bristles.
A downhole tool assembly, comprising:
- a back pressure valve (BPV) lubricator tool that comprises a BPV rod;
- and
- a BPV profile cleaning tool, comprising:
- a brush assembly attached to the BPV rod and comprising:
- a brush that comprises a plurality of bristles, the brush further comprising an outer diameter sized for insertion into a BPV profile of a wellhead, and
- at least one first magnet;
- and
- a second magnet configured to attach to an end of the BPV rod, the second magnet comprising an outer diameter sized to fit through the BPV profile of the wellhead.
Dependencies are inferred from the claim text.