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COMPUTATIONAL MECHANICS: TECHNIQUES AND DEVELOPMENTS
Edited by: B.H.V. Topping
Fracture Propagation from Deviated Wellbores
C.Y. Dong and C.J. de Pater
Department of Applied Petrophysics, Delft University of Technology, Delft, The Netherlands
C.Y. Dong, C.J. de Pater, "Fracture Propagation from Deviated Wellbores", in B.H.V. Topping, (Editor), "Computational Mechanics: Techniques and Developments", Civil-Comp Press, Edinburgh, UK, pp 189-196, 2000. doi:10.4203/ccp.66.8.1
Keywords: multiple cracks, FRANC3D, fracture stiffness.
In this paper the FRANC3D (FRacture ANalysis Code for 3D Solids and Shells) program has been used to investigate the crack growth in a rock with multiple parallel cracks along an offset direction with respect to the in-situ stresses. The proposed technique only needs the discretization of the crack surface and the rock surface. The crack size during propagation is calculated using mode I stress intensity factor along the crack front. The crack propagation direction is determined using the minimum strain energy criterion. The fracture stiffness in 3-D crack systems is obtained.
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