A New Classification and Description of Shale Pore System: from the Burial History Perspective

Accurate micro-storage and mechanism of shale gas is important for defining and describing the adsorption characteristics, and for gas-in-place estimation. In this paper, reservoir forming process is divided into early stage and late stage, and the initial gas-water distribution in different stage i...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-11, Vol.571 (1), p.12084
Main Authors: Zhao, Tianyi, Yin, Xia, Chen, Gang, Tian, Lingyu
Format: Article
Language:English
Subjects:
Adsorption
Gas-liquid systems
Gas-liquid-solid systems
Gas-solid systems
Pores
Reservoirs
Residual gas
Shale
Shale gas
Water distribution
Water engineering
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Summary:Accurate micro-storage and mechanism of shale gas is important for defining and describing the adsorption characteristics, and for gas-in-place estimation. In this paper, reservoir forming process is divided into early stage and late stage, and the initial gas-water distribution in different stage is redefined. Different from the widely used solid-gas interface adsorption theory, the pore system in original shale reservoir is divided into solid-gas system and solid-liquid-gas system. Gas pores existing in organic matters belong to solid-gas system, and are classified into residual gas pores and metamorphic gas pores. Plant tissue pores in organic and mineral pores belong to solid-liquid-gas system. Their characteristics are described.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/571/1/012084