Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments
Light hydrocarbons (C6-C13) are the major components of light oils and condensates and contain abundant geochemical information. Hence, they are widely used as important supplements to biomarker analysis. Due to high volatility, it is often difficult to collect light hydrocarbons completely after py...
Published in: | Organic Geochemistry |
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2022
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Online Access: | http://ir.gig.ac.cn/handle/344008/68062 https://doi.org/10.1016/j.orggeochem.2022.104432 |
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ftchacadscgigcas:oai:ir.gig.ac.cn:344008/68062 2023-05-15T15:39:11+02:00 Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments Huang, Yueyi Liao, Yuhong Pan, Yinhua Hsu, Chang Samuel Wang, Yunpeng Peng, Ping 'an 2022-06-01 http://ir.gig.ac.cn/handle/344008/68062 https://doi.org/10.1016/j.orggeochem.2022.104432 英语 eng PERGAMON-ELSEVIER SCIENCE LTD ORGANIC GEOCHEMISTRY http://ir.gig.ac.cn/handle/344008/68062 doi:10.1016/j.orggeochem.2022.104432 Geochemistry & Geophysics Gold tube pyrolysis Thermal alteration Light hydrocarbons Liquid hydrocarbon collection methods Light hydrocarbon parameters Stable carbon isotope CARBON-ISOTOPE FRACTIONATION MOLECULAR-WEIGHT HYDROCARBONS THERMOCHEMICAL SULFATE REDUCTION SOUTHWESTERN BARENTS SEA TARIM BASIN PETROLEUM-HYDROCARBONS THERMAL MATURITY SOURCE ROCKS N-ALKANES GAS 期刊论文 2022 ftchacadscgigcas https://doi.org/10.1016/j.orggeochem.2022.104432 2022-12-19T19:17:08Z Light hydrocarbons (C6-C13) are the major components of light oils and condensates and contain abundant geochemical information. Hence, they are widely used as important supplements to biomarker analysis. Due to high volatility, it is often difficult to collect light hydrocarbons completely after pyrolysis experiments. The traditional liquid hydrocarbon (TLH) collection method is usually applied to collect liquid hydrocarbon products after gold tube closed-system pyrolysis experiments. However, this method is difficult to adequately inhibit the evaporation of light hydrocarbons, which may cause deviations in the evaluation of generation potential, applications of parameters, and stable carbon isotopic compositions of light hydrocarbons. Hence, we have developed an alternative method of liquid nitrogen direct freezing (LNDF) to collect liquid hydrocarbon products after pyrolysis of a crude oil in closed gold tubes. The yields, molecular and stable carbon isotopic compositions of light hydrocarbons collected are compared with the TLH method to evaluate any differences. In addition, the influence of thermal alteration on the characteristics of light hydrocarbons are discussed. The yields of light hydrocarbons by the TLH method are 10-75% less than that by the LNDF method, which may bring about an underestimate of light hydrocarbon generation potential. The maturity corresponding to the maximum light hydrocarbon yield determined by the TLH method is at Easy%Ro = 1.08, much lower than Easy%Ro = 1.67 by the LNDF method. Relative to the LNDF method, the TLH method reveals significant differences in some light hydrocarbon parameters and C-6-C-8 carbon isotopes, which may cause deviations in their geochemical applications such as oils correlation and thermal maturity evaluation. In addition, thermal maturation has significant effects on some light hydrocarbon parameters. The LNDF method can effectively avoid evaporative loss to reveal the original geochemical information of light hydrocarbons. Report Barents Sea Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) Barents Sea Organic Geochemistry 168 104432 |
institution |
Open Polar |
collection |
Guangzhou Institute of Geochemistry: GIG OpenIR (Chinese Academy of Sciences) |
op_collection_id |
ftchacadscgigcas |
language |
English |
topic |
Geochemistry & Geophysics Gold tube pyrolysis Thermal alteration Light hydrocarbons Liquid hydrocarbon collection methods Light hydrocarbon parameters Stable carbon isotope CARBON-ISOTOPE FRACTIONATION MOLECULAR-WEIGHT HYDROCARBONS THERMOCHEMICAL SULFATE REDUCTION SOUTHWESTERN BARENTS SEA TARIM BASIN PETROLEUM-HYDROCARBONS THERMAL MATURITY SOURCE ROCKS N-ALKANES GAS |
spellingShingle |
Geochemistry & Geophysics Gold tube pyrolysis Thermal alteration Light hydrocarbons Liquid hydrocarbon collection methods Light hydrocarbon parameters Stable carbon isotope CARBON-ISOTOPE FRACTIONATION MOLECULAR-WEIGHT HYDROCARBONS THERMOCHEMICAL SULFATE REDUCTION SOUTHWESTERN BARENTS SEA TARIM BASIN PETROLEUM-HYDROCARBONS THERMAL MATURITY SOURCE ROCKS N-ALKANES GAS Huang, Yueyi Liao, Yuhong Pan, Yinhua Hsu, Chang Samuel Wang, Yunpeng Peng, Ping 'an Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
topic_facet |
Geochemistry & Geophysics Gold tube pyrolysis Thermal alteration Light hydrocarbons Liquid hydrocarbon collection methods Light hydrocarbon parameters Stable carbon isotope CARBON-ISOTOPE FRACTIONATION MOLECULAR-WEIGHT HYDROCARBONS THERMOCHEMICAL SULFATE REDUCTION SOUTHWESTERN BARENTS SEA TARIM BASIN PETROLEUM-HYDROCARBONS THERMAL MATURITY SOURCE ROCKS N-ALKANES GAS |
description |
Light hydrocarbons (C6-C13) are the major components of light oils and condensates and contain abundant geochemical information. Hence, they are widely used as important supplements to biomarker analysis. Due to high volatility, it is often difficult to collect light hydrocarbons completely after pyrolysis experiments. The traditional liquid hydrocarbon (TLH) collection method is usually applied to collect liquid hydrocarbon products after gold tube closed-system pyrolysis experiments. However, this method is difficult to adequately inhibit the evaporation of light hydrocarbons, which may cause deviations in the evaluation of generation potential, applications of parameters, and stable carbon isotopic compositions of light hydrocarbons. Hence, we have developed an alternative method of liquid nitrogen direct freezing (LNDF) to collect liquid hydrocarbon products after pyrolysis of a crude oil in closed gold tubes. The yields, molecular and stable carbon isotopic compositions of light hydrocarbons collected are compared with the TLH method to evaluate any differences. In addition, the influence of thermal alteration on the characteristics of light hydrocarbons are discussed. The yields of light hydrocarbons by the TLH method are 10-75% less than that by the LNDF method, which may bring about an underestimate of light hydrocarbon generation potential. The maturity corresponding to the maximum light hydrocarbon yield determined by the TLH method is at Easy%Ro = 1.08, much lower than Easy%Ro = 1.67 by the LNDF method. Relative to the LNDF method, the TLH method reveals significant differences in some light hydrocarbon parameters and C-6-C-8 carbon isotopes, which may cause deviations in their geochemical applications such as oils correlation and thermal maturity evaluation. In addition, thermal maturation has significant effects on some light hydrocarbon parameters. The LNDF method can effectively avoid evaporative loss to reveal the original geochemical information of light hydrocarbons. |
format |
Report |
author |
Huang, Yueyi Liao, Yuhong Pan, Yinhua Hsu, Chang Samuel Wang, Yunpeng Peng, Ping 'an |
author_facet |
Huang, Yueyi Liao, Yuhong Pan, Yinhua Hsu, Chang Samuel Wang, Yunpeng Peng, Ping 'an |
author_sort |
Huang, Yueyi |
title |
Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
title_short |
Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
title_full |
Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
title_fullStr |
Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
title_full_unstemmed |
Improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
title_sort |
improved light hydrocarbons collection method for the pyrolysis of crude oil in gold tube closed system experiments |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
publishDate |
2022 |
url |
http://ir.gig.ac.cn/handle/344008/68062 https://doi.org/10.1016/j.orggeochem.2022.104432 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea |
genre_facet |
Barents Sea |
op_relation |
ORGANIC GEOCHEMISTRY http://ir.gig.ac.cn/handle/344008/68062 doi:10.1016/j.orggeochem.2022.104432 |
op_doi |
https://doi.org/10.1016/j.orggeochem.2022.104432 |
container_title |
Organic Geochemistry |
container_volume |
168 |
container_start_page |
104432 |
_version_ |
1766370656416432128 |