Hi,
Pipelines are used for transporting crude oil, petroleum products and natural gas from oil and natural gas fields to refineries, fertilizer factories and big thermal power plants. They have been very useful as :
1) Solids can also be transported through a pipeline when converted into slurry.
2) The far inland locations of refineries like Barauni, Mathura, Panipat and gas based fertilizer plants could be set up only because of pipelines.
3) Initial cost of laying pipelines is high but subsequent running costs are minimal. It rules out trans-shipment losses or delays.