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DISTRIBUTIONS OF LIGHT HYDROCARBONS IN THE NEAR SURFACE ZONE CONNECTED WITH MEASUREMENTS OF MAGNETIC SUSCEPTIBILITY IN THE MARGINAL PART OF THE CARPATHIAN FOREDEEP AND OUTER CARPATHIANS – CASE STUDY FROM SE POLAND.
- Source :
- Proceedings of the International Multidisciplinary Scientific GeoConference SGEM; 2019, Vol. 19 Issue 1, p795-802, 8p
- Publication Year :
- 2019
-
Abstract
- The paper presents an attempt to integrate the results of surface geochemical survey (“free gas” method) and soil magnetic susceptibility carried out in "Brzesko-Wojnicz" area, the SE part of Poland. The measurement profile is located at the border of two regional tectonic units: the central part of the Carpathian Foredeep and the Outer Carpathians. . The purpose of the article was to find out a relationship between different indicators of hydrocarbon microseepage, which can provide useful information, especially in petroleum prospecting. A total of 38 soil and soil gas samples were collected from 1.2 m depth below the surface. Maximum concentrations of CH<subscript>4</subscript>, total alkanes C<subscript>2</subscript>-C<subscript>5</subscript>, total alkenes C<subscript>2</subscript>-C<subscript>4</subscript> in soil gas samples reached: 36.1 ppm, 0.95 ppm and 0.23 ppm, respectively. Very low values of magnetic susceptibility of soil ranged between 0.8 and 12.9 10<superscript>-8</superscript> m³ /kg. Moreover, the results of hydrocarbon concentrations and magnetic susceptibility measurements of soil gas samples were presented in a linear plot and then integrated with seismic image. The method presented in this paper is a complementary one and its results allow to better understanding of the complexity of hydrocarbon migration mechanisms in the studied area. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13142704
- Volume :
- 19
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Proceedings of the International Multidisciplinary Scientific GeoConference SGEM
- Publication Type :
- Conference
- Accession number :
- 138657037
- Full Text :
- https://doi.org/10.5593/sgem2019/1.2