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Oil and gas potential assessment of Siljan impact crater in Sweden by frequency-resonance method of remote sensing data processingNormal access

Authors: S. Levashov, N. Yakymchuk, I. Korchagin and D. Bozhezha
Event name: 16th International Conference on Geoinformatics - Theoretical and Applied Aspects
Session: Geoinformation Researches for Petroleum and Mineral Exploration
Publication date: 15 May 2017
DOI: 10.3997/2214-4609.201701814
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 4.84Mb )
Price: € 20

The results of oil and gas prospects assessment of the entire Siljan crater and local exploration area within it are analyzed. A survey of these areas were carried out with a frequency-resonance technology of satellite images processing using for "direct" searching and prospecting of hydrocarbons (HC) accumulations. The investigation results are given by maps of maximum values of fluid pressure in the reservoir. This is, in fact, a complex parameter, whose value depends of the gas pressure, contained in the fluid or in free form in the reservoir, as well as of its amount, i.e. of the rock porosity. These zones deserve of detailed study and drilling. The resulting estimates of fluid pressure in the reservoirs indicate of their position at the top of the cross-section. The probability of commercial hydrocarbon accumulations discovery within the crater at depths over 800-1000 m is very low. However, the results of additional studies within one large anomaly have been shown the existence of more deep intervals for hydrocarbon accumulation searching in cross-section. In the case of their confirmation, this will be crucial for the operative assessment of hydrocarbon potential of deep horizons of the cross-section. From investigation results follow also that the drilled deep wells Gravberg-1 and Stenberg-1 are not optimally positioned (they are not within anomalous zones). Application of direct-prospecting technology of remote sensing data frequency-resonance processing will speed up and optimize the process of prospecting and exploration for commercial hydrocarbon accumulations in the Siljan impact craters area.

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