BADANIA LABORATORYJNE PROCESÓW WYPIERANIA RODZIMEGO GAZU ZIEMNEGO ROZPUSZCZONEGO W SOLANKOWYCH POZIOMACH WODONOŚNYCH NIECKI POZNAŃSKIEJ Z WYKORZYSTANIEM ZATŁACZANEGO CO2

Abstract

LABORATORY STUDIES ON DISPLACING PROCESSES OF NATIVE HYDROCARBON GAS DISSOLVED IN DEEP SALINE AQUIFER OF POZNAN TROUGH USING CO2 INJECTIONAbstract. In this paper we present Poznań Trough megaaquifer naturally saturated by native natural gases. This megastructure represents a great potential for long-term underground C02 storage on 5 000 km2 area. Oil & Gas Institute and Polish Oil & Gas Company has gained a lot of experience in acid gas capture and storage. The acid gas containing 60% of CO2 and 15% of H2S reinjected into an aquifer directly underlying the Borzęcin gas reservoir has been in operation since 1996. Apart from technological parameters we also analyzed the process of displacement of native natural gas which originally saturates the underlying water by acid gases injected into reservoir. Such a displacement process allows to replenish the gas cap by volume equivalent to methane gas dissolved in underlying water. This paper describes the apparatus and research station/unit designed to explore the natural gas displacement processes. The results of some experiments earned out on a reservoir physical model are presented.