Coupled THMC model-based prediction of hydraulic fracture geometry and size under self-propping phase-transition fracturing

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dc.contributor.authorZhang, Nanlin
dc.contributor.authorLiu, Fushen
dc.contributor.authorJiang, Liangliang
dc.contributor.authorMo, Pinqiang
dc.contributor.authorXiao, Jingwen
dc.contributor.authorSong, Qi
dc.contributor.authorLuo, Yuhao
dc.date.accessioned2024-10-06T00:05:04Z
dc.date.available2024-10-06T00:05:04Z
dc.date.issued2024-10-04
dc.date.updated2024-10-06T00:05:04Z
dc.description.abstractAbstract The Self-Propping Phase-transition Fracturing Technology (SPFT) represents a novel and environmentally friendly approach for a cost-effective and efficient development of the world’s abundant unconventional resources, especially in the context of a carbon-constrained sustainable future. SPFT involves the coupling of Thermal, Hydraulic, Mechanical, and Chemical (THMC) fields, which makes it challenging to understand the mechanism and path of hydraulic fracture propagation. This study addresses these challenges by developing a set of THMC multifield coupling models based on SPFT parameters and the physical/chemical characteristics of the Phase-transition Fracturing Fluid System (PFFS). An algorithm, integrating the Finite Element Method, Discretized Virtual Internal Bonds, and Element Partition Method (FEM-DVIB-EPM), is proposed and validated through a case study. The results demonstrate that the FEM-DVIB-EPM coupling algorithm reduces complexity and enhances solving efficiency. The length of the hydraulic fracture increases with the quantity and displacement of PFFS, and excessive displacement may result in uncontrolled fracture height. Within the parameters considered, a minimal difference in fracture length is observed when the PFFS amount exceeds 130 m3, that means the fracture length tends to stabilize. This study contributes to understanding the hydraulic fracture propagation mechanism induced by SPFT, offering insights for optimizing hydraulic fracturing technology and treatment parameters.
dc.identifier.citationInternational Journal of Coal Science & Technology. 2024 Oct 04;11(1):78
dc.identifier.urihttps://doi.org/10.1007/s40789-024-00727-4
dc.identifier.urihttps://hdl.handle.net/1880/119955
dc.language.rfc3066en
dc.rights.holderThe Author(s)
dc.titleCoupled THMC model-based prediction of hydraulic fracture geometry and size under self-propping phase-transition fracturing
dc.typeJournal Article
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