Below, a 1,500 meter deep shaft connects an oil reservoir with the Earth's surface.
下面，一个 1,500 米深的竖井将油藏与地球表面连接起来。
Oil reservoir
原声例句
TED-Ed（视频版）
英语百科
Petroleum reservoir
（重定向自Oil reservoir）
A petroleum reservoir or oil and gas reservoir is a subsurface pool of hydrocarbons contained in porous or fractured rock formations. Petroleum reservoirs are broadly classified as conventional and unconventional reservoirs. In case of conventional reservoirs, the naturally occurring hydrocarbons, such as crude oil or natural gas, are trapped by overlying rock formations with lower permeability. While in unconventional reservoirs the rocks have high porosity and low permeability which keeps the hydrocarbons trapped in place, therefore no need for any cap rock. Reservoirs are found using hydrocarbon exploration methods.
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