Pipeline Inspection
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Operation of liquid pipeline
Operation of liquid pipeline
Operation
For liquid pipelines that transport crude oil and liquefied petroleum products, small diameter gathering lines collect the product from where it is extracted. After moving to a gathering facility, it moves to feeder pipelines with relatively large diameters which transports product to refineries. Transmission lines are used when oil and liquids have to travel long distances. To push the liquid through the pipe, powerful pumps are used and move oil at around walking speed. Liquids pipelines are very versatile and can transport a variety of grades or varieties of crude oil and crude oil products.
The process is similar for natural gas pipelines—extracted natural gas is transported for processing in gathering and feeder lines, then moves into large transmission pipelines (generally composed of steel pipe). Gas is able to flow as it moves from areas of high pressure to low pressure. This pressure difference is obtained through the use of compressors that increase the pressure of the gas, pushing it along.Once the gas reaches a distribution plant, companies reduce the pressure of the gas and distribute it through small distribution pipelines.- 0 Replies
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