On the genesis of secondary reservoirs of oil and gas at superdeep depths
DOI:
https://doi.org/10.15407/dopovidi2016.07.086Keywords:
deep-lying petroliferous complexes, gas porosity, secondary reservoirsAbstract
The presence of high-yield reservoirs of oil and gas in the Lower Carboniferous at a depth of more than 6 km is caused by the action of ascending plumetectonic high-enthalpy fluids upon intensively compressed (with practically total reduction of sedimentary porosity) sedimentary rocks. These processes are connected with neo- and actuotectonic stages of the evolution of deep sedimentary basins. The current helium-hydrogen "blowing-up" is of special importance in the formation of such reservoirs. It provides both a purely physical deconsolidation ("gas" porosity and fracturing) and physicochemical processes of leaching and acid dissolution.
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