Pipeline pig with restricted fluid bypass

Details Pipeline pig with restricted fluid bypass Pipeline pig with restricted fluid bypass

Filed on

1983-12-14

Date issued

1985-02-12

Examiner

Caroff, Marc L.

Patent Class

Cleaning and liquid contact with solids

SubClass

Processes

SubSubClass

Using solid work treating agents

Other Related Categories

1510406R, 134 2212, B08B 904

Type

Patent

Status

active

Patent number

044989326

Description

ABSTRACT:
A pipeline pig is provided having a restricted fluid bypass channel which serves to bring fluid from the back of the pig to its front, the fluid agitating and suspending discrete solids such as sand or rust, or commingling with scraped paraffinic and asphaltic deposits accumulated by the pig as it moves through the line, thereby preventing the buildup of a solid bed or plug of sufficient thickness or viscosity in front of the pig so as to cause the pig to partially collapse and ride over it or to become stuck.

REFERENCES:
patent: 1756378 (1930-04-01), Oberhuber
patent: 2289109 (1942-07-01), Edwards et al.
patent: 3403701 (1968-10-01), Knapp et al.
patent: 3667544 (1972-06-01), Allimon
patent: 3875606 (1975-04-01), Landers
patent: 3900912 (1975-08-01), Lenz et al.
patent: 4016620 (1977-04-01), Powers
patent: 4069535 (1978-01-01), Cato
patent: 4083076 (1978-04-01), Girard
patent: 4206313 (1980-06-01), Cavoretto
patent: 4411039 (1983-10-01), Timmins et al.

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Also associated with

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