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US 7,264,060 B2Granted
Side entry sub hydraulic wireline cutter and method
AssigneeBaker Hughes Incorporated
InventorPhilip Wills
Life of this patent
Estimating the term…
Abstract
A side entry sub for use with a drill string, where the side entry sub receives a wireline within its inner diameter. The present invention includes a device capable of severing the wireline proximate to the side entry sub. The present invention can further include a capturing device to grapple the severed portion of the wireline to prevent it from being dropped within the wellbore.
Claims17
A cutting assembly for cutting a line comprising:
- an elongated housing having an outer surface and an inner surface;
- a first piston configured to coaxially move within the housing;
- a cutting surface actuated by said first piston moveable into cutting contact with the line;
- and a second piston configured to coaxially move in relation to said first piston and configured to coaxially move within the housing.
1 more element
A cutting assembly for cutting a line comprising:
- an elongated housing having an outer surface and an inner surface;
- a first piston within the housing;
- a cutting surface actuated by said first piston moveable into cutting contact with the line;
- a second piston slideably attached to said first piston;
- a gap formable between said first piston and said second piston, said gap when formed capable of providing a fluid flow passage between said first piston and said second piston.
2 more elements
A cutting assembly for cutting a line comprising:
- an elongated housing having an outer surface and an inner surface;
- a first piston within the housing;
- a cutting surface actuated by said first piston moveable into cutting contact with the line;
- and
- a hanging plate frangibly coupled to said first piston.
2 more elements
A method of performing wellbore operations comprising:
- connecting a side entry sub to a tubular member;
- threading a line through the side entry sub;
- threading the line through the tubular member;
- and
- providing a cutting assembly with said tubular member proximate to said side entry sub, where said cutting assembly comprises a first piston, and a cutting surface actuated by said first piston moveable into cutting contact with the line, wherein said cutting assembly further comprises a second piston slideably attached to said first piston.
2 more elements
Dependencies are inferred from the claim text.