Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China
Abstract A consensus has been reached through previous studies that organic matter (OM) pores are crucial to porosity in many shale gas reservoirs; however, their origins and types remain controversial. Here, we report the OM pore types hosted in algae, bitumen, graptolite and other fossil fragments...
Guardado en:
Autores principales: | , , |
---|---|
Formato: | article |
Lenguaje: | EN |
Publicado: |
Nature Portfolio
2018
|
Materias: | |
Acceso en línea: | https://doaj.org/article/c5123f340be0406a937cc8cb42439bcc |
Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
id |
oai:doaj.org-article:c5123f340be0406a937cc8cb42439bcc |
---|---|
record_format |
dspace |
spelling |
oai:doaj.org-article:c5123f340be0406a937cc8cb42439bcc2021-12-02T11:40:55ZCharacteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China10.1038/s41598-018-25104-52045-2322https://doaj.org/article/c5123f340be0406a937cc8cb42439bcc2018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25104-5https://doaj.org/toc/2045-2322Abstract A consensus has been reached through previous studies that organic matter (OM) pores are crucial to porosity in many shale gas reservoirs; however, their origins and types remain controversial. Here, we report the OM pore types hosted in algae, bitumen, graptolite and other fossil fragments in the Wufeng-Longmaxi Formations of the Sichuan Basin, Southwest China. Algae types mainly include multicellular algae, unicellular algae, etc. The OM pores in multicellular algae usually exhibit irregular, bubble-like, spherical and/or elliptical profiles, and their diameters vary between 300 and 800 nm. The shapes of the OM pores in unicellular algae are either irregular or oval, and the pores are hundreds of nanometres in size. The pores associated with solid bitumen are sporadic, isolated and variable in size, ranging from 500 nm to 3 μm. The pores in the graptolite, sponge spicule, radiolarian and other fossil fragments are much smaller and fewer. The pores may only have developed in the surface of the graptolite and bitumen by filling in the biological cavity of the sponge spicule. These new findings provide stronger evidence that multicellular algae are the main hydrocarbon generating organisms of OM pores development.Haikuan NieZhijun JinJinchuan ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018) |
institution |
DOAJ |
collection |
DOAJ |
language |
EN |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Haikuan Nie Zhijun Jin Jinchuan Zhang Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China |
description |
Abstract A consensus has been reached through previous studies that organic matter (OM) pores are crucial to porosity in many shale gas reservoirs; however, their origins and types remain controversial. Here, we report the OM pore types hosted in algae, bitumen, graptolite and other fossil fragments in the Wufeng-Longmaxi Formations of the Sichuan Basin, Southwest China. Algae types mainly include multicellular algae, unicellular algae, etc. The OM pores in multicellular algae usually exhibit irregular, bubble-like, spherical and/or elliptical profiles, and their diameters vary between 300 and 800 nm. The shapes of the OM pores in unicellular algae are either irregular or oval, and the pores are hundreds of nanometres in size. The pores associated with solid bitumen are sporadic, isolated and variable in size, ranging from 500 nm to 3 μm. The pores in the graptolite, sponge spicule, radiolarian and other fossil fragments are much smaller and fewer. The pores may only have developed in the surface of the graptolite and bitumen by filling in the biological cavity of the sponge spicule. These new findings provide stronger evidence that multicellular algae are the main hydrocarbon generating organisms of OM pores development. |
format |
article |
author |
Haikuan Nie Zhijun Jin Jinchuan Zhang |
author_facet |
Haikuan Nie Zhijun Jin Jinchuan Zhang |
author_sort |
Haikuan Nie |
title |
Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China |
title_short |
Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China |
title_full |
Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China |
title_fullStr |
Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China |
title_full_unstemmed |
Characteristics of three organic matter pore types in the Wufeng-Longmaxi Shale of the Sichuan Basin, Southwest China |
title_sort |
characteristics of three organic matter pore types in the wufeng-longmaxi shale of the sichuan basin, southwest china |
publisher |
Nature Portfolio |
publishDate |
2018 |
url |
https://doaj.org/article/c5123f340be0406a937cc8cb42439bcc |
work_keys_str_mv |
AT haikuannie characteristicsofthreeorganicmatterporetypesinthewufenglongmaxishaleofthesichuanbasinsouthwestchina AT zhijunjin characteristicsofthreeorganicmatterporetypesinthewufenglongmaxishaleofthesichuanbasinsouthwestchina AT jinchuanzhang characteristicsofthreeorganicmatterporetypesinthewufenglongmaxishaleofthesichuanbasinsouthwestchina |
_version_ |
1718395543902748672 |