全球采矿采购市场报告(2017-2021年)
The past century has seen the dominance of fossil fuels as the chief source of energy
for the sustenance of the global economic machinery. Among the various fossil fuels
available, crude oil is one commodity that has controlled almost all the aspects of the
energy business. Crude oil is a mixture of compounds composed primarily of carbon
and hydrogen in varying proportions, along with inorganic compounds such as
nitrogen, sulfur, and metals like vanadium and mercury. Crude oil is found in specific
rock formations, known as reservoirs, in the earth's crust. The depth at which these
reservoirs occur can vary significantly, from pools that flow up to the surface to the
ones that are nearly 15,000 meters underground. The method employed to gain
access to these reservoirs of black gold is through drilling the surface till the predefined
depth is reached.