The Performance of Hydraulic Fractures Partially Filled with Compressible Proppant

Mechanical response of a proppant pack to confining stresses significantly influences the aperture of highly conductive artificial or natural fracture channels and, to some extent, determines the efficiency of hydraulic stimulations. This paper presents a simplified mathematical model of a crack par...

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Published inAustralian journal of multi-disciplinary engineering Vol. 10; no. 2; pp. 185 - 197
Main Authors Bortolan Neto, L., Khanna, A.
Format Journal Article
LanguageEnglish
Published Routledge 01.01.2013
Subjects
Compressibility
fracture closure
hydraulic fracture
Hydraulic fracturing
Mathematical models
Oil wells
Partially propped
proppant compressibility
residual opening
steady-state flow
well productivity
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ISSN1448-8388
2204-2180
DOI10.7158/14488388.2013.11464876

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Abstract Mechanical response of a proppant pack to confining stresses significantly influences the aperture of highly conductive artificial or natural fracture channels and, to some extent, determines the efficiency of hydraulic stimulations. This paper presents a simplified mathematical model of a crack partially filled with compressible proppant subject to remote compressive stress and a computational approach for evaluating the productivity rate of hydraulically stimulated wells. The conducted case studies confirm that the proppant pack distribution and compressibility have a significant impact on well productivity. Furthermore, it is suggested that under certain conditions, for example, relatively low confining stresses, the partially propped fractures can lead to higher well production rate than fractures fully filled with proppant. The benefit of reducing proppant pack compressibility for improving the performance of wells with partially propped fractures is also verified.
AbstractList Mechanical response of a proppant pack to confining stresses significantly influences the aperture of highly conductive artificial or natural fracture channels and, to some extent, determines the efficiency of hydraulic stimulations. This paper presents a simplified mathematical model of a crack partially filled with compressible proppant subject to remote compressive stress and a computational approach for evaluating the productivity rate of hydraulically stimulated wells. The conducted case studies confirm that the proppant pack distribution and compressibility have a significant impact on well productivity. Furthermore, it is suggested that under certain conditions, for example, relatively low confining stresses, the partially propped fractures can lead to higher well production rate than fractures fully filled with proppant. The benefit of reducing proppant pack compressibility for improving the performance of wells with partially propped fractures is also verified.
Author Bortolan Neto, L.
Khanna, A.
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SubjectTerms Compressibility
fracture closure
hydraulic fracture
Hydraulic fracturing
Mathematical models
Oil wells
Partially propped
proppant compressibility
residual opening
steady-state flow
well productivity
Title The Performance of Hydraulic Fractures Partially Filled with Compressible Proppant
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