Radially expandable downhole fluid jet cutting tool

Details Radially expandable downhole fluid jet cutting tool Radially expandable downhole fluid jet cutting tool

2006-09-18

2008-10-14

Neuder, William P (Department: 3672)

Boring or penetrating the earth

Processes

Boring with specific fluid

C175S424000, C166S055800

Reexamination Certificate

active

07434633

ABSTRACT:
Downhole fluid jet cutting tools having extendible and retractable arms with cutting heads on the ends are disclosed. The jet cutting tools permit casing and other downhole surfaces to be cut utilizing a cutting fluid forced through a jet nozzle assembly. Movement of a piston slidingly engaged within the passageway of the tool actuates the arms when cutting fluid pressure acts on the piston. As a result, the arms are extended and cutting fluid is forced at high pressure from the passageway to the cutting head where it is expelled through nozzles for cutting casing and the like. The jet cutting tools permit the arms to be extended, retracted, and re-extended or redeployed multiple times without the need for being retrieved from the wellbore.

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patent: 2007/0151766 (2007-07-01), Butler et al.

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