Apparatus for replacing a section of a pipeline

Details Apparatus for replacing a section of a pipeline Apparatus for replacing a section of a pipeline

1988-05-18

1990-03-20

Bryant, III, James E.

Pipes and tubular conduits

Repairing

138 89, F16L 5518

Patent

active

049092812

ABSTRACT:
Replacing a section of a pipeline by indenting the pipeline from the outside to provide a stop shoulder on the inside adjacent the section to be replaced. Positioning and securing an anchoring and seal pig in the pipeline against the stop shoulder, removing the section of the pipeline to be replaced including the stop shoulder, replacing a new section, and releasing and removing the anchoring and seal pig in order to provide space for the replacement section. A part of the anchoring and seal pig is removed prior to replacing a new section.

REFERENCES:
patent: 3285290 (1966-11-01), Morrison
patent: 3503424 (1970-03-01), Sawyer
patent: 4077435 (1978-03-01), Van Scoy
patent: 4658860 (1987-04-01), Reaux

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