000			02153nab a2200205 4500
005			20260520003101.0
008			260224s2012 xxu ing
041			_aInglés
245	0	0	_aDetection of Porous and Permeable Formations: From Laboratory Measurements to Seismic Measurements
260			_a _b _cjul./ago. 2012
270			_a14/05/2013 ; 14/05/2013
300			_a8 p. ; 703-721
520			_aTraducción del resúmen del autor: We present a seismic processing method which shows that it is possible to extract new attributes from seismic sections, leading to a better understanding of the distribution of the porous and permeable bodies. The attributes are also used to detect the impermeable layers. The methodology is based on laboratory experiments which have shown that a formation permeability indicator can be obtained via the computation of 4 input data: P-wave frequency and attenuation, porosity and specific surface. The procedure has been firstly conducted in acoustic logging to estimate permeability of porous layers and to detect water inflows [Mari et al. (2011) Phys. Chem. Earth 36, 17, 1438-1449]. In seismic, the processing is performed in order to measure these parameters. The analytic signal is used to compute the instantaneous frequency and attenuation (Q factor). The porosity and specific surface are computed from seismic impedances obtained by acoustic inversion of the migrated seismic sections. The input parameters are used to compute a new index named Ik-Seis factor (Indicator (I) of permeability (k) from acoustic or seismic (Seis) data). The potential of the proposed procedure is demonstrated via a field case, both in full waveform acoustic logging and in seismic surveying. The example shows that the Ik-Seis factor can be used to map both the distribution of the permeable bodies in the carbonate formations and the non permeable shaly layers associated with the Callovo-Oxfordian claystone.
581			_a4
773	0		_tOil and Gas Science and Technology _g67
942			_cARTICULO
100	1		_aMari, J.L. _953175
100	1		_aGuillemot, D. _953176
999			_c187689 _d187689