000			01615nab a2200193 4500
005			20260608201740.0
008			260224s2011 xxu
100	1		_aMakar, Karter H. _951779
100	1		_aKamel, Mostafa H. _917332
245	0	0	_aAn approach for minimizing errors in computing effective porosity in reservoir of shaly nature in view of Wyllie-Raymer-Raiga relationship
260			_a _b _cjun. 2011
270			_a27/09/2011 ; 27/09/2011
300			_a7 p. ; 386-392
520			_aTranscripción del resumen del autor. Effective porosity ( E) in clean and shaly formations is evaluated based on a newly introduced formulation that requires acoustic-radiation data and provides superior accuracy over other commonly used formulae based on various porosity tools. This equation, which is termed as a second order acoustic porosity-Vsh model, relates acoustic transit time to matrix and fluid in addition to shale parameters. In both clean and shaly formations, this relationship can be applied safely for evaluating effective porosity specifically for old wells that suffer from insufficient logging data such as density-neutron logs and in the absence of core regardless the differences observed. It can also be considered as a quick-look approach in interpreting the recent exploratory wells before the decision of completing the logging measurements. Successfulness of applying the proposed equation for evaluating " " to real field data is justified as far as reliability and range of accuracies are concerned.
581			_a3-4
773			_g
942			_cARTICULO
999			_c185926 _d185926