Method for remotely launching subsea pigs in response to wellhea

Details Method for remotely launching subsea pigs in response to wellhea Method for remotely launching subsea pigs in response to wellhea

1998-03-03

2000-02-08

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

Using solid work treating agents

134 18, 134 2211, 15 35, 1510405, 15104062, B08B 904, F16L 4500, F16L 5500

Patent

active

060224215

ABSTRACT:
A method for sensing and launching pipeline pigs into a pipeline. The method includes pressurizing a pressure accumulator in a pig launching system that includes a pig chamber, a plurality of pigs, a launch tube, and the pressure accumulator. The method further includes sensing a pressure within the pipeline and applying pressure from the pressure accumulator to force a pig through the launch tube and into the pipeline.

REFERENCES:
patent: 3600736 (1971-08-01), Smith et al.
patent: 5139576 (1992-08-01), Davis
patent: 5219244 (1993-06-01), Skeels
patent: 5444886 (1995-08-01), Takashina et al.
patent: 5795402 (1998-08-01), Hargett, Sr. et al.
patent: 5842816 (1998-12-01), Cunningham

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