THE GEOLOGICAL CHARACTERISTICS OF THE KAMIONKI ANTICLINE (PLOCK TROUGH) - A POTENTIAL CO2 STORAGE SITE

The location, geological structure and characteristics of the Kamionki Anticline is presented in terms of possibility of underground CO2 storage. It is situated in the Plock Trough, in the SW part of the Plonsk Block, and represents a synsedimentary graben originated in the Early and Middle Jurassic. It has been explored by a semi-detailed reflection seismic survey and three deep boreholes (Kamionki 1, Kamionki 2 and Kamionki IG-3). Assuming that the anticline is conventionally outlined by a contour line of the top of the Lower Jurassic, its length is about 15 km, width is about 5 kin and the area reaches approximately 75 km(2). Geological, seismic and reservoir property data allow concluding that this structure is suitable for underground carbon dioxide storage, The primary reservoir level for underground CO2 storage is represented by Barremian-middle Albian deposits of the Mogilno Formation with an average thickness of 170 metres, containing on the average 85% of sandstones, and showing porosity of about 20% and permeability above 100 mD up to 2000 mD. The scaling series is composed of Upper Cretaceous marls, limestones and chalk reaching the thickness of about 1000 metres. The secondary reservoir level is represented by upper Toarcian deposits of the Borucice Formation. The Kamionki structure is one of nine geological structures selected for underground carbon dioxide storage in Mesozoic deposits of the Plock Trough. It is located a short distance from a large CO2 emitter - PKN Orlen SA (Plock), whereas at a distance of 50-100 km there arc other large emitters (Vettenfall Heat Poland SA - Zeran, Soda Polska Ciech Sp. z o.o. - Janikowo and Inowroclaw, and Dalkia Lodz ZEC SA) that may be interested in geological disposal of carbon dioxide.