Evaluation of the Gas Content in Archived Shale Samples: A Carbon Isotope Study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F19%3A43916603" target="_blank" >RIV/62156489:43210/19:43916603 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/19:00113441 RIV/00025798:_____/19:00000301

Výsledek na webu

<a href="https://doi.org/10.3390/geosciences9110481" target="_blank" >https://doi.org/10.3390/geosciences9110481</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/geosciences9110481" target="_blank" >10.3390/geosciences9110481</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of the Gas Content in Archived Shale Samples: A Carbon Isotope Study

Popis výsledku v původním jazyce

We examined 14 archived samples of shale for the chemical and 13C isotopic composition of residual gases produced as part of rock-crushing operations at a hammer mill. Results were compared with data on maturity from Rock-Eval pyrolysis and vitrinite reflectance measurements. The samples originated from three different formations (Mikulov Marls, Ostrava Formation, and Liteň Formation) located in the Czech Republic. For comparison, we examined a gas-prone shale sample from the Polish Silurian. We used changes in the chemical and isotopic composition of released gases to evaluate the isotope fractionation during gas loss and retroactively calculated the initial content of gas in the shale samples. The gas content estimates (in L of gas per ton of rock) correspond with the maturity parameters of the shales. Calculated isotope fractionation for the gas release was MINUS SIGN 3%o for both methane and ethane. The archived samples primarily lost methane (up to 90%), with subsequent changes in the content of ethane and higher hydrocarbon levels.

Název v anglickém jazyce

Evaluation of the Gas Content in Archived Shale Samples: A Carbon Isotope Study

Popis výsledku anglicky

We examined 14 archived samples of shale for the chemical and 13C isotopic composition of residual gases produced as part of rock-crushing operations at a hammer mill. Results were compared with data on maturity from Rock-Eval pyrolysis and vitrinite reflectance measurements. The samples originated from three different formations (Mikulov Marls, Ostrava Formation, and Liteň Formation) located in the Czech Republic. For comparison, we examined a gas-prone shale sample from the Polish Silurian. We used changes in the chemical and isotopic composition of released gases to evaluate the isotope fractionation during gas loss and retroactively calculated the initial content of gas in the shale samples. The gas content estimates (in L of gas per ton of rock) correspond with the maturity parameters of the shales. Calculated isotope fractionation for the gas release was MINUS SIGN 3%o for both methane and ethane. The archived samples primarily lost methane (up to 90%), with subsequent changes in the content of ethane and higher hydrocarbon levels.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10505 - Geology

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Geosciences

ISSN

2076-3263

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

481

Kód UT WoS článku

000502289200027

EID výsledku v databázi Scopus

2-s2.0-85075218414