Pipe retriever

Details Pipe retriever Pipe retriever

1989-12-15

1991-03-05

Focarino, Margaret A.

Handling: hand and hoist-line implements

Grapple

Well type

294 95, E21B 3120

Patent

active

049972251

ABSTRACT:
A pipe retrieving tool has two arms with outward facing teeth adapted to engage inner threads of a pipe. A surface retrieving line attaches to a weighted actuator, which is positioned to move over a limited range relative to the arms. The tool is lowered into a pipe to be retrieved from a well. Once inside the pipe, a pull on the surface retrieving line raises the weighted actuator. This forces the arms outward, causing the teeth to engage the inner threads of the pipe. With the teeth engaging the pipe threads, the pipe can be lifted out of the well.

REFERENCES:
patent: 718066 (1903-01-01), McWilliams
patent: 1445680 (1923-02-01), Guess
patent: 1580352 (1926-04-01), Ventresca
patent: 2634156 (1953-04-01), Crimmel
patent: 3858731 (1975-01-01), Briggs
patent: 3874446 (1975-04-01), Crowe
patent: 3881375 (1975-05-01), Kelly
patent: 3882377 (1975-05-01), Kelly
patent: 3944273 (1976-03-01), Ahlstone
patent: 3987910 (1976-10-01), Brunato
patent: 3990510 (1976-11-01), Decuir
patent: 4030544 (1977-06-01), Ahlstone
patent: 4254983 (1981-03-01), Harris
patent: 4298066 (1981-11-01), Colonna et al.
patent: 4364587 (1982-12-01), Samford
patent: 4431057 (1984-02-01), Colonna et al.
patent: 4450606 (1984-05-01), Broussard
patent: 4497371 (1985-02-01), Lindsey, Jr.
patent: 4616855 (1986-10-01), Ruhle
patent: 4637468 (1987-01-01), Derrick
patent: 4664419 (1987-05-01), Tan et al.
patent: 4725179 (1988-02-01), Woolslayer et al.

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