New transient-flow modelling of a multiple-fractured horizontal well

A new transient-flow modelling of a multiple-fractured horizontal well is presented. Compared to conventional modelling, the new modelling considered more practical physical conditions, such as various inclined angles for different fractures, different fracture intervals, different fracture lengths...

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Bibliographic Details
Published in:Journal of geophysics and engineering 2014-02, Vol.11 (1), p.15013-15
Main Authors: Jia, Yong-Lu, Wang, Ben-Cheng, Nie, Ren-Shi, Wang, Dan-Ling
Format: Article
Language:English
Subjects:
Eigenvalues
Fracture mechanics
Horizontal wells
Mathematical analysis
Mathematical models
Modelling
multiple-fractured horizontal well
orthogonal transform
Three dimensional
transient flow
type curves
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Summary:A new transient-flow modelling of a multiple-fractured horizontal well is presented. Compared to conventional modelling, the new modelling considered more practical physical conditions, such as various inclined angles for different fractures, different fracture intervals, different fracture lengths and partially penetrating fractures to formation. A kind of new mathematical method, including a three-dimensional eigenvalue and orthogonal transform, was created to deduce the exact analytical solutions of pressure transients for constant-rate production in real space. In order to consider a wellbore storage coefficient and skin factor, we used a Laplace-transform approach to convert the exact analytical solutions to the solutions in Laplace space. Then the numerical solutions of pressure transients in real space were gained using a Stehfest numerical inversion. Standard type curves were plotted to describe the transient-flow characteristics. Flow regimes were clearly identified from type curves. Furthermore, the differences between the new modelling and the conventional modelling in pressure transients were especially compared and discussed. Finally, an example application to show the accordance of the new modelling with real conditions was implemented. Our new modelling is different from, but more practical than, conventional modelling.
ISSN:1742-2132
1742-2140
DOI:10.1088/1742-2132/11/1/015013