Počet záznamů: 1

The creation of an asymmetric hydraulic fracture as a result of driving stress gradients

  1. 1.
    0330206 - GFU-E 2010 RIV GB eng J - Článek v odborném periodiku
    Fischer, Tomáš - Hainzl, S. - Dahm, T.
    The creation of an asymmetric hydraulic fracture as a result of driving stress gradients.
    Geophysical Journal International. Roč. 179, č. 1 (2009), s. 634-639 ISSN 0956-540X
    Grant ostatní:EU(XE) MTKI-CT-2004-517242
    Výzkumný záměr: CEZ:AV0Z30120515
    Klíčová slova: downhole methods * fracture and flow * earthquake source observations * geomechanics
    Kód oboru RIV: DC - Seismologie, vulkanologie a struktura Země
    Impakt faktor: 2.435, rok: 2009

    Hydraulic fracture stimulation is frequently performed in hydrocarbon reservoirs and geothermal systems to increase the permeability of the rock formation. These hydraulic fractures are often mapped by hypocentres of induced microearthquakes. In some cases microseismicity exhibits asymmetry relative to the injection well, which can be interpreted by unequal conditions for fracture growth at opposite sides of the well or by observation effects. Here we investigate the role of the lateral change of the minimum compressive stress. We use a simple model to describe the relation among the lateral stress gradient, the mean viscous pressure gradients in the fracture wings, the fracture geometry, and the net pressure in the fracture.
    Trvalý link: http://hdl.handle.net/11104/0176049