000			02163nmc a2200253 4500
005			20260520005439.0
008			260224s xxu esp
041			_aEspañol
082			_a068.82 553.28 C62 2018 0015648
245	0	0	_aDaño de formación en la cara de la fractura _bImplicancias en rocas tight, Cuenca del Golfo San Jorge
270			_a29/06/2022 ; 25/02/2019
300			_a8 p. ; 109-117
520			_aFormation damage generates important deterioration in the petrophysical properties of the reservoirs. The case of this study corresponds to a well in the province of Santa Cruz, Argentina, with productions much lower than expected, coming from tight reservoirs (K <0,1 mD). To evaluate the presence of damage, a new laboratory technique was applied to simulate a hydraulic frac stage during which the gelled fluid for frac remained in contact with the reservoir for more than thirty days. Samples of a core were analyzed by physical measurements, thin sections and scanning with the electronic microscopy before and after immersing the samples in the frac fluid under reservoir conditions and for a period of twenty days. The lithologies analyzed were fine tuffs, tobaceous sandstones and very fine tuffs and in all three there was evidence of formation damage. Zeolites and chlorites were the minerals most susceptible to alteration with the frac gelled fluid and the main damage mechanisms were the physical and chemical alteration of zeolites and the loss of crystallinity in chlorites, in both cases with possible formation of residues obstructing the limited permeable throats of tight reservoirs.
773			_g
942			_cCONGTP
100	1		_aOfeliz, Silvia _9741
100	1		_aIovine, Gastón _9742
111	2		_aCongreso de Exploración y Desarrollo de Hidrocarburos (10mo. : 2018 nov. 5 - 9 : Mendoza) _9573
111	2		_aSimposio de Evaluación de Formaciones (2018 nov. 5 - 9 : Mendoza) _9675
650		0	_aDaño de formación _9743
650		0	_aRocas tight _9744
999			_c128423 _d128423
856			_uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/Conexplor2018/SEF/1480.pdf