Latest Issue of Science News


News

Electromagnetism could ease the flow in oil pipelines

Oil drillers often heat crude oil or dilute it with gasoline to make it runny enough to flow through pipelines to refineries. Now, physicists find that a few seconds to minutes of exposure to a modest magnetic or electric field, instead of the standard treatments, sharply reduces crude oil's viscosity for hours at a time.

The new oil-thinning technique could reduce the difficulty and cost of pumping crude oil, particularly from offshore rigs that feed pipelines passing through deep, cold waters, the scientists say.

Rongjia Tao and Xiaojun Xu, both of Temple University in Philadelphia, observed that either a magnetic or electric field reduced the viscosity of crude oil that's rich in paraffin wax. Another kind of crude oil rich in asphalt thinned from exposure only to electric fields, the researchers report in the September-October Energy & Fuels.

Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.

X
This article is available only to subscribing members. Join SSP today or Log in.