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Shale hydraulic fracture morphology and inter-well interference rule under multi-wellbore test
- Source :
- Applied Rheology, Vol 34, Iss 1, Pp 108002-55 (2024)
- Publication Year :
- 2024
- Publisher :
- De Gruyter, 2024.
-
Abstract
- This study conducted a series of true triaxial hydraulic fracturing experiments on Longmaxi Formation shale. We investigated the interaction between internal factors and external factors on the inter-well interference of 400 mm cubic porous specimens. During dual wellbore fracturing at different formations, forming inter-well interference through secondary hydraulic fractures lead to a lower interference intensity and larger stimulated rock area. When adopting a three-layer well layout during three-wellbore fracturing, the vertical distance between the wells is shortened, activating more bedding planes. Regardless of a horizontal well placement with two wellbores or a three-dimensional two-layer well placement with three wellbores, increasing the vertical stress leads to more potent inter-well interference. There is no absolute positive correlation between the stimulated rock area and inter-well interference. It can be influenced by the presence of natural fractures within the formation that can even lead to a reduction in the stimulated area. When the well placement changes from two horizontal wellbores to three-dimensional two-layer sites with three wellbores and the vertical stress increases, the inter-well interference becomes stronger, but the stimulated rock area only increases by 22.6%. These findings provide crucial guidance for the hydraulic fracturing design of shale reservoirs.
Details
- Language :
- English
- ISSN :
- 16178106
- Volume :
- 34
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Applied Rheology
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.21fbb283d00843f8bbf89b8cc3a69d6a
- Document Type :
- article
- Full Text :
- https://doi.org/10.1515/arh-2024-0005