Shale oil is oil squeezed out of layered rock. Extract shale oil, the shale oil boom.
It is released by fracturing the rock with pressurised water, which is where the arguments start. Shale oil turned America from an importer into an exporter within about a decade.
1nounshale oilOil squeezed out of layered rock.
“The shale oil fields changed the world price within a few years.”
shale oil is a fuel.
Practised in Rocks & Minerals