000			02132nmc a2200205 4500
005			20260525050545.0
008			260224s xxu
082			_aPD I116 3 0015570
100	1		_aArillo, Facundo _9768
100	1		_aQuintavalla, Claudia _956230
100	1		_aAbitbol, Francisco _956231
111	2		_aCongreso de Producción y desarrollo de reservas de hidrocarburos (6to : 2016 oct. 24 al 27: Bariloche, Argentina) _955815
245	0	0	_aPetrophysical evaluation in tight gas formations through cased hole logs: contingency solutions for open hole logs
270			_a5/6/2019 ; 17/03/2017
300			_a15 p.
520			_aIn recent decades, the evaluation of tight formations has become a challenge for many petrophysicists. The interpretation of electric logs in these types of unconventional reservoirs becomes difficult because of the low porosity and permeability that they represent. Quite often, because of drilling problems or simply because of the nature of the reservoir, the well must be cased without the possibility of obtaining open-well records, which are a key requirement to define the correct petrophysical interpretation. In light of this situation, how difficult does the analysis for this type of formation become when we do not have open hole logs? In other words, how can we evaluate whether or not the zone of interest will produce water when we do not have the critical information? This paper demonstrates how, through the use of pulsed neutron and complete-wave sonic logging, it is possible to determine the principal characteristics of a tight reservoir. With those logs, the fundamental parameters can be obtained with which to develop the completion of the well (effective porosity, volume of clay, water saturation, VP/VS ratio, and other parameters) to thereby select the "pay" zones to be fractured. This work presents a concrete solution for the efficient evaluation of tight gas reservoirs, using cased well logging.
856			_uhttps://biblioteca.iapg.org.ar/ArchivosAdjuntos/Congreso-de-produccion/6to/822.pdf
942			_cCONGTP _2ddc
999			_c190111 _d190111