Geomagnetic studies at Rubaniv gas field in outer zone of Carpathian Foredeep, Ukraine

Abstract

SUMMARY The results of geomagnetic studies at the Rubaniv gas field in the Outer zone of the Carpathian Foredeep are considered. A detailed study of the anomalous magnetic field and the magnetic properties of rocks and soils at the zones of hydrocarbon deposits is a basement for the application of the magnetic prospecting for direct hydrocarbon prospecting. At the present study we investigate the structure of the local anomalous magnetic field in the zones of hydrocarbon fields within the Carpathian Foredeep for the identification of the genetic relation of the magnetic properties of surface rocks and soils with the microseepage of hydrocarbons. The total magnetic field vector T and its components (declination, inclination, horizontal and vertical components) along the 5 transect were measured. The soil magnetic susceptibility in transects and in the profiles (genetic horizons) were studied. The local positive magnetic anomalies with the amplitude from 2 to 8 nT and dispersion of the soil magnetic susceptibility above the Rubaniv gas field were detected. This data indicated the genetic relations between gas deposits, microseepage, and changes of the magnetic field and soil magnetism.