Patent ID: 6874193

Claim:
A pipeline pig that is moved through the interior of a pipeline by the flow of pressurized gas and that provides for improved distribution of treating liquid subsisting in the lower portion of the pipeline, comprising; a longitudinal pig body having a nose cone at a forward end thereof and rearward end; centralizers affixed to said pig body by which it is supported in the pipeline and moved by gas flow through the pipeline; a bypass passageway within said nose cone communicating with the pipeline interior; a siphon passageway having a portion thereof within said nose cone and having an inlet end communicating substantially exclusively with a lower portion of the pipeline interior and thereby with any liquid subsisting therein and having an outlet end; and a venturi in said nose cone and in communication with said siphon passageway and said bypass passageway, gas flowing through said bypass passageway serving to draw liquid subsisting in said lower portion of the pipeline through said siphon passageway whereby the liquid is discharged from said siphon passageway outlet end onto interior surfaces of the pipeline.