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Mechanical and Hydraulic Aspects of Rock-Proppant Systems : Laboratory Experiments and Modelling Approaches

Reinicke, A. (2011): Mechanical and Hydraulic Aspects of Rock-Proppant Systems: Laboratory Experiments and Modelling Approaches, PhD Thesis, (Scientific Technical Report  ; 11/09), Potsdam : Deutsches GeoForschungsZentrum GFZ, iv, 140 p.
DOI: http://doi.org/10.2312/GFZ.b103-11098



http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:43048
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1109.pdf
(Publisher version), 12MB

Authors
http://gfzpublic.gfz-potsdam.de/cone/persons/resource/reini

Reinicke ,  Andreas
Scientific Technical Report STR, Deutsches GeoForschungsZentrum;
4.1 Reservoir Technologies, 4.0 Chemistry and Material Cycles, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
3.2 Geomechanics and Rheology, 3.0 Geodynamics and Geomaterials, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
ICGR International Center for Geothermal Research, Geoengineering Centres, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Abstract
[...] In context of this work, a new damage mechanism is proposed: the mechanically induced fracture face skin. This new mechanism results from mechanical interactions between the proppants and the reservoir rock, due to the increasing stress on the rock-proppant system during production. Proppant embedment into the fracture face and proppant crushing leads to fines production and can impair the fracture performance. In order to achieve sustainable, longterm productivity from a reservoir, it is indispensable to understand the hydraulic and mechanical interactions in the rock-proppant system. In order to analyse the hydraulic and mechanical interactions, laboratory experiments using three different flow cells were conducted. These flow cells were used to localise and quantify the mechanical damage at the fracture face, as well as to investigate the long-term stability of a rock-proppant system under in-situ reservoir conditions. [...]