Mega-reservoirs of oil and gas: systematization, conditions of formation, influence of natural processes on the scale of accumulations

Abstract

The ideas about the conditions for the formation of large oil and gas reserves in both traditional reservoirs and unconventional shale, as well as in low-pore reservoirs with hard-to-recover superviscous oils and natural bitumen, have been expanded. The influence of geological and geochemical environments on the scale of hydrocarbon accumulations is analyzed. Keywords: oil; gas; mega-reservoirs; hydrocarbon accumulations; reserves ; area and volume; shale formations; conventional and unconventional reservoirs.