Geoinformatika 2019; 3(71) : 5-18
UKRAINIAN SHIELD: NEW DATA ON DEPTH STRUCTURE AND PROSPECTS OF OIL, GAS CONDENSATE, GAS AND HYDROGEN ACCUMULATIONS DETECTION
N.A. Yakymchuk1, I.N. Korchagin2
1 Institute of Applied Problems of Ecology, Geophysics and Geochemistry, prov. Laboratory, 1, Kiev, 01133, e-mail: email@example.com
2Institute of Geophysics of Ukraine National Academy of Science, Kyiv, Ukraine, firstname.lastname@example.org
Purpose. The results of additional studies using the methods of frequency-resonance processing and interpretation of satellite images and photographs on the Ukrainian Shield (USH) are presented with the aim of studying the deep structure in this region and searching for hydrocarbon accumulations.
Design/methodology/approach. Experimental studies were carried out using modified methods of frequency-resonance processing and interpretation of satellite images and photographs, vertical electric-resonance sounding (scanning) of the cross-section, as well as methods of integrated assessment of the prospects for petroleum and ore potential of large exploration blocks and license areas. The used direct-prospecting methods are based on the principles of the «substance» paradigm of geophysical research, the essence of which is to search for a specific substance (the one sought in each particular case) – oil, gas, gas condensate, gold, zinc, uranium, etc.
Findings. Studies have confirmed the presence of two layers of granites of different ages on the USH, as well as deep channels of vertical migration of fluids, minerals, and chemical elements with roots at depths of 470 km and 996 km filled with granite rocks. Channels with roots at various depths filled with basalts, ultramafic rocks, kimberlites and sedimentary rocks were found at individual points on the profiles. The interval of the cross-section between the upper and lower strata of granites deserves a detailed study in order to detect and localize possible hydrocarbon accumulations; within it, responses from sedimentary rocks, as well as oil, condensate, gas and amber, were recorded. The deep synthesis of hydrocarbons and amber is evidenced by the facts of recording responses at the frequencies of oil, condensate, gas and amber in the interval of depths from the surface up to 57 km; below this boundary, responses are recorded at the frequencies of hydrogen and carbon. The practical significance and conclusions. The results of the research indicate the feasibility of applying the methods of frequency-resonance processing and interpretation of satellite images and photographs for the operational survey of areas and blocks that are considered unpromising from the standpoint of the biogenic origin of hydrocarbons. The use of mobile and direct-prospecting methods at the initial stages of prospecting and exploration will accelerate the long process of developing the resource potential of hydrocarbons in unexplored and poorly studied regions.
Keywords: Ukrainian shield, direct prospecting, degassing, vertical channel, deep structure, cross-section, oil, gas, hydrogen, amber, satellite data, mobile technology, anomaly, remote sensing data processing, interpretation, vertical sounding.
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