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  Oil Shale

ISSN 1736-7492 (electronic)  ISSN 0208-189X (print)
Published since 1984

Oil Shale

ISSN 1736-7492 (electronic)  ISSN 0208-189X (print)
Published since 1984

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PROSPECTS OF LITHUANIAN SILURIAN SHALE GAS, BALTIC SEDIMENTARY BASIN; pp. 357–372

(Full article in PDF format) doi: 10.3176/oil.2016.4.04


Authors

SAULIUS SLIAUPA, RASA SLIAUPIENĖ, GAILĖ ZALŪDIENĖ, TATSIANA VASKABOINIKAVA, ALENA BIBIKAVA, LIUDMILA EVSTRATENKO, ANDREI KOVKHUTO

Abstract

The Baltic sedimentary basin contains numerous hydrocarbon fields in Lithuania. The Lower Silurian shales are considered as potential for shale gas exploration. The thickness of shale units within the oil window ranges from 115 to 180 m in west Lithuania. The average total organic carbon (TOC) content of the Lower Silurian shales is about 1.0–1.2%, with an elevated content averaging 6.7% in the Aeronian black shales. The organic matter (OM) is Type II kerogen. Pyrolysis analysis shows moderate thermal maturity parameters; Tmax is from 428 °C in central Lithuania to 455 °C in the west of the country, implying the oil generation stage. It is concluded that the burial conditions were favorable for oil generation, while the gas potential of Silurian shales is rather limited.

Keywords

gas shales, Baltic sedimentary basin, Silurian, pyrolysis, TOC.

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