DEM simulation of confining pressure effects on crack opening displacement in hydraulic fracturing
| Autor: | Abolfazl Abdollahipour, Javad Gholamnejad, Alireza Yarahmadi Bafghi, Mohammad Fatehi Marji |
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| Rok vydání: | 2016 |
| Předmět: |
lcsh:TN1-997
Chemistry Numerical analysis 0211 other engineering and technologies Well stimulation Energy Engineering and Power Technology 02 engineering and technology 010502 geochemistry & geophysics Geotechnical Engineering and Engineering Geology Overburden pressure 01 natural sciences Physics::Geophysics Element model Permeability (earth sciences) Hydraulic fracturing Exact solutions in general relativity Geochemistry and Petrology Geotechnical engineering Rock mass classification lcsh:Mining engineering. Metallurgy Computer Science::Information Theory 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | International Journal of Mining Science and Technology, Vol 26, Iss 4, Pp 557-561 (2016) |
| ISSN: | 2095-2686 |
| Popis: | Hydraulic fracture is one of the key methods in well stimulation to increase production of oil and gas. Crack Opening Displacement (COD) is of great importance in this method since it is in direct relation with permeability and production rate. In this paper COD is measured by a distinct element model which has been validated by an exact solution. A comprehensive study has been performed on confining pressure effect on COD which is neglected in the analytical solution. Numerical results showed that confining pressure considerably affects COD. A multi-parameter regression (considering effect of confining pressure, rock mass properties and fluid pressure) was performed on numerical results which resulted in an equation. The proposed equation considers the effect of confining pressure and its results are in good agreement with numerical results. Keywords: Hydraulic fracture, COD, Numerical analysis, Confining pressure, Regression |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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