000			01667nmc a2200217 4500
005			20260520005814.0
008			260224s xxu
082			_aCD I249 1 0013788
245	0	0	_aVSP interpretation, estimation of attenuation and anisotropy
270			_a12/09/06 ; 22/07/2003
300			_a15 p.
500			_aDisponible en CD en formato PDF
520			_aTranscripción del abstract original del autor: In the borehole seismic techniques, the seismic wave travels are reduced; therefore, the VSP data usually have better signal-to-noise ratios at high frequencies than do seismic surface data. Its basic use is to determine interval velocities, identify and correlate major reflectors across well logs and surface seismic image. In this paper, we present an interpretation of zero and fixed offset VSP data recorded at a well located in the south of Algeria. The amplitude spectral ratio method was applied to a zero offset VSP data, to estimate the attenuation factor (Q), which is recognised as potentially important quantity in reservoir characterization. The angles computed from experimented offset VSP (hodogram) and synthetic offset VSP are used to calculate oblique velocity. Comparison between the oblique and vertical velocities derived from a sonic log and a zero offset VSP, gives information about the anisotropy (P wave velocity anisotropy).
773			_g
942			_cCONGTP
100	1		_aBabaia, Foudil _922055
110	2		_aInternational Gas Union, IGU _913105
111	2		_aWorld Gas Conference (22nd. : 2003 jun 1-5 : Tokyo) _922029
710	2		_aInternational Gas Union, IGU _913105
999			_c149424 _d149424