000			02918nam a2200301 4500
005			20260520010407.0
008			260224s2018 xxu esp
041			_aEspañol
082			_a068.82 553.28 C62 2018 0015652
245	0	0	_aEfecto de histéresis con degradación sobre la conductividad de fracturas inducidas en la Formación Vaca Muerta
260			_a _b _c2018
270			_a05/07/2022 ; 15/04/2019
300			_a11 p. ; 57-68
520			_aUnconventional reservoirs have been extensively explored and developed in the last years. These reservoirs are characterized by having very low permeabilities (below 0.1mD) and they need to be hydraulically fractured in order to generate high conductivity channels. Hydraulic stimulations produce an important amount of induced fractures in the reservoir that interact with pre-existing natural fractures. The interaction generates a complex network of fractures that facilitates the flow of hydrocarbons from the rock to the wellbore. One important aspect of this process is the packing of proppants that may keep the fracture open and conductive, during the producing life of the well. However, far from the well, the distribution of proppants is not always efficient and the hydraulic properties of the induced fractures, with very little or even no proppants, can significantly differ from those of the main fractures. There is a great deal of uncertainty about the impact of the unpropped or closely unpropped fracture network on the ultimate recovery of wells. Special conductivity tests are required to mimic the fractures with either very low concentration or noproppants at reservoir conditions, to understand and evaluate the contribution of such ‘far field’ fractures.In this paper, we present results of conductivity tests of fractures with and without proppants, under the influence of stress cycles. The tests were performed on induced fractures of Vaca Muerta formation cores. The results show a clear hysteresis effect with degradation of the fracture conductivity as a function of the applied effective stress. These tests, under realistic conditions, bring substantial information for the analysis of well performance, the definition of draw down protocols and the optimization of the stimulation design.
773			_g
942			_cCONGTP
100	1		_aMarco, Simón _958883
100	1		_aSánchez, Martín _9704
100	1		_aHryb, Damián _9706
100	1		_aVitolo, Martín _955865
100	1		_aFernández Badessich, Matías _922902
111	2		_aCongreso de Exploración y Desarrollo de Hidrocarburos (10mo. : 2018 nov. 5 - 9 : Mendoza) _9573
111	2		_aSesión de Geomecánica (2018 nov. 5 - 9 : Mendoza) _9707
650		0	_aConductividad _938831
650		0	_aFractura _9942
999			_c192862 _d192862
856			_uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/Conexplor2018/SGeom/1327.pdf