Method of injecting pigs into a pipe
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 25, 2002
Issued Date -
N/A
app pub date -
Jun 27, 2000
filing date -
Feb 14, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
A pig injector has a magazine having a plug at one end and connected to a pig injector valve at the other end. The pig injector valve has a rotatable pig receiving chamber with a length L. Plural pigs of length L between rounded ends are positioned end to end within the elongate interior cavity of the magazine. A method of injecting pigs into a pipe at a pig injector valve comprising: (a) storing plural pigs in a magazine connected to the pig injector valve; (b) rotating the ball of the pig injector valve to be in position to receive a pig and close the pipe; (c) moving a pig from the magazine into the pig injector valve; (d) rotating the ball of the pig injector valve to open the pig injector valve and release the pig in the pipe; (e) moving the pig away from the pig injector valve with fluid pressure in the pipe; and subsequently repeating steps (b)-(e) with a second pig. Steps (b)-(e) may be repeated plural times and at regular intervals.
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