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Hydraulic fracturing initiation and propagation in deep inclined open hole for Enhanced Geothermal System

Cited 10 time in Web of Science Cited 10 time in Scopus
Issue Date
2017-11
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
Geothermics, Vol.70, pp. 351-366
Keywords
Hydraulic fracturing initiation and propagation in deep inclined open hole for Enhanced Geothermal System자연과학Enhanced geothermal systemHydraulic fracturingOpen holeWell trajectoryInsitu stress
Abstract
This paper describes the development of a generic geomechanical model for estimating the fracture initiation in open hole section and the overall fracturing propagation during the hydraulic stimulation in Enhanced Geothermal System. General studies on the effects in situ stress and open hole trajectory on hydraulic fracturing indicate that 1) the upward growth of vertical fracture is expected for normal faulting and strike slip stress regimes; 2) the fracture initiation at casing shoe section prevails for common stress range at deep formation; 3) an inclined open hole tends to decrease fracture pressure gradient for normal faulting and reverse faulting stress regimes and 4) an open hole with building up trajectory may shift fracture initiation location from casing shoe to well toe by a lower breakdown pressure. The proposed model predicts fracture initiation at well toe location for Jolokia-1 stimulation by NaBr brine.
ISSN
0375-6505
Language
English
URI
https://hdl.handle.net/10371/139269
DOI
https://doi.org/10.1016/j.geothermics.2017.07.007
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Energy Systems Engineering (에너지시스템공학부)Energy Resources Engineering (에너지자원공학전공)Journal Papers (저널논문_에너지자원공학과)
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