Obszary gazonośne roponośne Polski

Abstract

GAS- AND OIL-BEARING AREAS IN POLAND Summary The Polish gas- and oil-bearing areas - Carpathian, Fore-Carpathian, Fore-Sudetic-Wielkopolska and western- Pomeranian - are discussed. In these areas, over 130 gas deposits and over 70 oil deposits have been discovered. In the Polish Carpathians, oil and gas deposits occur in flysch rocks of the Cretaceous-Paleogene age. The former have been exploited since the middle of the XIX c. whereas exploitation of the latter did not begin until the end of the I w.w. The Fore-Carpathian area is situated within the Carpathian Foredeep and gas deposits are there related to the Miocene and gas and oil deposits - to Jurassic and Cretaceous rocks of the foredeep basement. Small gas deposits have been also discovered in the Triassic. The Fore-Sudetic-Wielkopolska area has been discovered in the sixties and the western-Pomeranian - in the seventies. These areas are situated in the Central European Permian Basin. In the former, gas deposits occur in the Rotliegendes and Zechstein Limestone and gas and oil deposits - in the Main Dolomite (Zechstein) and in the latter, gas deposits are related to the Carboniferous and oil deposits - to the Main Dolomite and Platy Dolomite (Zechstein) and there are real perspectives of further discoveries of gas deposits in the Rotliegendes, Main Dolomite and Platy Dolomite. Gas accumulations are also exploited in the Coal Measures in southern part of the Upper Silesian Coal Basin, Middle Devonian and Upper Carboniferous in the Lublin Basin, and oil deposit - in Cambrian of the Peribaltic Syneclize. Production of gas was ranging from 6.0 to 7.6 billions m3 in the years 1975-1980, being mainly connected with exploitation of deposits newly discovered in the Miocene of the Carpathian Foredeep and the Rotliegendes of the Permian Basin. At that time, the production of oil was equal 0.30-0.55 million t, being mainly connected with exploitation of deposits in the Main Dolomite (Zechstein) in the western-Pomeranian area, Cretaceous and Jurassic of the Carpathian Foredeep and Cretaceous and Paleogene of the Flysch Carpathians. The intensification of search should lead to further discoveries, especially in the Permian and Carboniferous in the western and central parts of the Permian Basin as well as the Carpathian Foredeep and the Carpathians. The available data suggest mainly discoveries of gas deposits.