In this talk, we will first review the physics and mechanics of fluid driven fractures in the context
of well stimulation by hydraulic fracturing. We will carefully list the different modeling “blocks” necessary
to design a hydraulic fracturing treatment (in connections with the different operational steps
of the process). Based on theoretical modeling and comparisons with experiments, we will also clarify
a number of points raised in the literature (stability of the fracture propagation, fracture initiation,
solid and fluid non-linearities, laminar vs turbulent flow, fracture height containment, etc.). We will
highlight the importance of the verification of numerical models against available semi-analytical solutions
(for simple fracture geometries) as well as the validation against carefully performed laboratory
In a second part of the talk, we will discuss in details the multi-stage fracturing technique which
consists in creating several fractures in an efficient manner along the horizontal section of a well. We
will show how a combination of modeling and field observations can help in better engineering this
type of operations in the context of unconventional reservoirs production.
 Emmanuel Detournay. Mechanics of hydraulic fractures. Annual Review of Fluid Mechanics,
 B. Lecampion and J. Desroches. Simultaneous initiation and growth of multiple radial hydraulic
fractures from a horizontal wellbore. J. Mech. Phys. Sol., 82:235–258, 2015.
 B. Lecampion, J. Desroches, R.G. Jeffrey, and A.P. Bunger. Experiments versus theory for the
initiation and propagation of radial hydraulic fractures in low permeability materials. Journal of
Geophysical Research: Solid Earth, 122, 2017.
 B. Lecampion, J. Desroches, X. Weng, J. Burghardt, and E.T. Brown. Can we engineer better
multistage horizontal completions? evidence of the importance of near-wellbore fracture geometry
from theory, lab and field experiments. In SPE Hydraulic Fracturing Technology Conference,
February 3-5 2015. SPE 173363.
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