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Publications associées (27)

Gas Shales Testing in Controlled Partially Saturated Conditions

Lyesse Laloui, Alessio Ferrari, Alberto Minardi

Laboratory measurement of mechanical properties of gas shales represents a challenging topic in geomechanics due to their peculiar features such as heterogeneity, anisotropy, low permeability, and complex physical phenomena related to the hydro-mechanical ...

2018

Gas shale water imbibition tests with controlled suction technique

Lyesse Laloui, Alessio Ferrari, Alberto Minardi

Water loss during flowback operations represents one of the main challenges related to the use of hydraulic stimulation to exploit shale gas resources. About 20% of the injected fracturing fluids are usually recovered after stimulation. Fluid imbibition is ...

Springer verlag2018

Hydro-mechanical characterization of gas shales and Opalinus Clay shale in partially saturated conditions

Alberto Minardi

An experimental study on the behaviour of shales in partially water saturated conditions is presented in this thesis. The Opalinus Clay shale and gas shales from different unconventional reservoirs have been studied. Opalinus Clay is currently considered a ...

EPFL2018

Accounting for near-wellbore fracture behavior to unlock the potential of unconventional gas wells

Brice Tanguy Alphonse Lecampion

Despite ongoing engineering efforts, unconventional horizontal gas wells completed with the multi-stage hydraulic fracturing technique are not yet producing to their full potential, as a meaningful proportion of clusters are producing marginally - if at al ...

2018

Elastic behavior of partially saturated gas shales during unloading - reloading cycles in uniaxial compression

Lyesse Laloui, Alessio Ferrari, Alberto Minardi

Elastic properties of gas shales are of utmost importance for the exploitation of shale gas reservoirs. Static elastic properties are usually measured by performing unloading-reloading cycles in uniaxial or triaxial compressive tests. The response of gas s ...

2018

On the swelling behavior of shallow Opalinus Clay shale

Lyesse Laloui, Alessio Ferrari, Eleonora Crisci

The Opalinus Clay shale is the selected geological formation for the construction of a deep geological repository in Switzerland. The geomaterial will experience cyclic drying and wetting paths during different stages of the repository lifetime. The shale, ...

2018

The impact of the volumetric swelling behavior on the water uptake of gas shale

Lyesse Laloui, Alessio Ferrari, Alberto Minardi

Water uptake of gas shales is commonly considered one of the most important factors responsible for fluid loss during flowback operations after hydraulic fracturing. Imbibition experiments cover a key role in this context to analyze the impact of several f ...

2018

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