Apparatus for internally checking well pipe bore and for automat

Details Apparatus for internally checking well pipe bore and for automat Apparatus for internally checking well pipe bore and for automat

1974-08-19

1976-03-16

Bell, Jr., Houston S.

Pipes and tubular conduits

With closures and plugs

Inflation stem type

F16L 5510

Patent

active

039439828

ABSTRACT:
Apparatus for checking the bore and for plugging a pipe comprises a frame movable along the interior of the pipe, the frame carrying means for detecting a deviation in the bore of the pipe, means responsive to an overpressure of fluid in the pipe in a direction opposite to that in which the apparatus is intended to move, and a movable control part responsive to the detection of a deviation and of an overpressure for operating locking means for locking the apparatus relative to the pipe and sealing means for sealing the pipe.

REFERENCES:
patent: 3746026 (1973-07-01), Herring
patent: 3751932 (1973-08-01), Matthews
patent: 3788084 (1974-01-01), Matthews
patent: 3795115 (1974-03-01), Bergquist
patent: 3842612 (1974-10-01), Arnold

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