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Geoinformatika 2018; 1(65) : 5-23

ABOUT THE FEASIBILITY OF THE MOBILE DIRECT-PROSPECTING TECHNOLOGIES APPLICATION FOR THE SITES OF WELLS FOR OIL AND GAS LOCATION

S.P. Levashov1,2, A.I. Samsonov1, N.A. Yakymchuk1,2, I.N. Korchagin3, D.N. Bozhezha2

1Institute of Applied Problems of Ecology, Geophysics and Geochemistry, 1, Laboratorny Lane, Kyiv, 01133, Ukraine
2Management and Marketing Center of the Institute of Geological Science, NAS of Ukraine, 1, Laboratorny Lane, Kyiv, 01133, Ukraine
3Institute of Geophysics, NAS of Ukraine, 32, Palladin Ave., Kyiv, 03680, Ukraine, e-mail: korchagin.i.n@gmail.com

Purpose. Additional study of the possibility of using the direct-prospecting technology of remote sensing data (satellite images) frequency resonance processing for operative assessment of the oil and gas potential of individual structures and local sites in order to select the optimal locations for the prospecting wells drilling. Experimental studies of demonstration character were conducted using this mobile technology in the eastern Mediterranean, in the economic zone of Bulgaria in the Black Sea, and in the Pripyat trough of the Republic of Belarus. Wells have been drilled within the surveyed structures and areas, one of which is in the process of drilling.
Design/methodology/approach. Mobile technology of frequency resonance processing and interpretation (decoding) of remote sensing data is a “direct” method for oil and gas searching, as well as ore minerals. It is developed on the principles of a “matter” paradigm of geophysical research, the essence of which is to search for a specific (sought in each case) substance — oil, gas, gas condensate, gold, zinc, uranium, etc. The technology has been tested on search areas and known oil and gas fields in various regions of the world and it is constantly being improved.
Findings. In the Mediterranean, an anomalous zone is mapped over the Zohr gas field, which is quite satisfactorily correlated with the structural map of the site. To the east of the unproductive Kg 70-1 well, an anomaly has been discovered, within which the channel of vertical fluid migration with the pressure of 141.0 MPa is located. On the drilling site of the Onisiforos West-1 well, an anomalous zone of “gas” type was discovered, and seven anomalous polarized layers of “gas” type were identified by the vertical scanning of the cross-section near the well. These results increased the probability of gas deposits finding in the “Onisiforos West-1” well. A large anomalous zone of the “oil and gas” type is mapped on the area of ​​the MINOAS structure. In the Black Sea, an anomalous zone of the “gas” type with an area of ​​36 km2 and a channel of fluid vertical migration with a pressure of 95.0 MPa were found on the area of ​​the “Polshkov-1” well drilling within the Khan Asparuh block. At the drilling site of the “Rubin-1” well, anomalous responses at the resonant frequencies of oil, gas and gas condensate were not detected; industrial (commercial) inflows of hydrocarbons in this well will not be received after the completion of its drilling. Within the large block of Silistar, four anomalous zones of the “oil+gas” type have been discovered, which deserve priority attention during detailed prospecting works the carrying out. “Predrechitskaya-1” deep well in the Pripyat trough is located at the edge of the mapped anomalous zone and industrial inflows of hydrocarbons in it have not been obtained. Above the Ugolskoye oil deposit an anomaly has been discovered, within which the channel of deep fluids vertical migration with a pressure of 135 MPa is localized.
The practical significance and conclusions. The anomalous zones discovered by the direct-prospecting method can be regarded as projections of the hydrocarbon accumulations contours in a cross-section on the day surface. This operative and supplementary information can be used to access approximately the hydrocarbon resources within the surveyed areas and structures. The results of the performed experimental studies testify to the expediency of using the direct-prospecting technologies for localization of optimal drilling sites for prospecting wells. An increase in the drilling success rate can lead to a significant acceleration and optimization of the geological exploration process for oil and gas in general.

Keywords: mobile technology, anomaly of deposit type, oil, gas, gas condensate, offshore, fault zone, satellite data, direct searches, remote sensing data processing, interpretation.

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