Study of the Long Term Acid Gas Sequestration Process in the Borzęcin Structure: Measurements Insight

Marcin Warnecki, Mirosław Wojnicki, Jerzy Kuśnierczyk and Sławomir Szuflita
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Marcin Warnecki: Oil and Gas Institute—National Research Institute, 25 A Lubicz Str., 31-503 Krakow, Poland
Mirosław Wojnicki: Oil and Gas Institute—National Research Institute, 25 A Lubicz Str., 31-503 Krakow, Poland
Jerzy Kuśnierczyk: Oil and Gas Institute—National Research Institute, 25 A Lubicz Str., 31-503 Krakow, Poland
Sławomir Szuflita: Oil and Gas Institute—National Research Institute, 25 A Lubicz Str., 31-503 Krakow, Poland

Energies, 2021, vol. 14, issue 17, 1-20

Abstract: Geological sequestration of acid gases, including CO 2 , is now a growing solution to prevent progressive Earth climate change. Disposal of environmentally harmful greenhouse gases must be performed safely and securely to minimise leakage risk and possible uncontrolled emissions of injected gases outside the sequestration structure. The paper describes a series of research activities at the Borzęcin sequestration site located in western Poland, which were designed to study the migration paths of injected acid gases (mainly mixture of CO 2 and H 2 S) into the water-bearing layers underlying natural gas reservoir. Along with understanding the nature and dynamics of acid gases migration within the sequestration structure, the research was also addressed to assess its leak-tightness and the long-term safety of the entire reinjection facility. As a part of the research works, two downhole sampling campaigns were completed in 2018–2019, where samples of water underlying the Borzęcin reservoir were taken and subsequently studied to determine their physicochemical parameters that were never before examined. Compositions of gas dissolved in downhole brine samples were compared with produced and injected gas. Relevant studies of reservoir water from selected wells were performed, including isotopic analyses. Finally, four series of soil gas analyses were performed on the area surrounding the selected well, which are important for the hazardous gas sequestration safety analysis in the Borzęcin facility. All the above mentioned research activities aimed to acquire additional knowledge, which is valuable for risk assessment of the acid gas sequestration process taking place on the specific example of the Borzęcin site operating continuously since 1996.

Keywords: CO 2 and H 2 S geological sequestration; acid gas reinjection; acid gas migration; bottomhole sampling; isotopic composition; gas and water chemical analysis; soil gas analysis; leakage risk analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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