--> Abstract: Wavelet Transform Modulus Maxima Lines Analysis of Seismic Data for Delineating Reservoir Fluids, by Sid-Ali Ouadfeul and Leila Aliouane; #90105 (2010)
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AAPG GEO 2010 Middle East
Geoscience Conference & Exhibition
Innovative Geoscience Solutions – Meeting Hydrocarbon Demand in Changing Times
March 7-10, 2010 – Manama, Bahrain

Previous HitWaveletNext Hit Transform Modulus Maxima Lines Analysis of Seismic Data for Delineating Reservoir Fluids

Sid-Ali Ouadfeul1; Leila Aliouane2

(1) Geophysics, FSTGAT/USTHB, Khemis El Khechna, Algeria.

(2) Geophysics, Earth Physics Laboratory, Boumerdes, Algeria.

The main goal of the proposed idea is to use the Previous HitwaveletNext Hit transform modulus maxima lines (WTMM) method to delineate reservoir fluids. First a seismic seismogram is generated using the convolution of the Previous HitRickerNext Hit Previous HitwaveletNext Hit with the reflectivity function calculated from the measured sonic and density well logs data.

Obtained seismogram is analyzed by the WTMM in order to calculate the singularities spectrum based on the direct Legendre transform of the spectrum of exponents.

Application of this technique at the real data of a borehole located in the Algerian Sahara is realized. Thus Singularities spectrum is estimated at corresponding depth of the following fluid types: Gas, Oil, Water, Gas-Oil and Oil-Water. Consequently, the obtained results allow taking a decision about the fluid nature containing the reservoirs rocks pores.

We have applied the proposed technique at two other boreholes, obtained results demonstrate that the Previous HitwaveletTop transform modulus maxima lines technique can give more idea about hydrocarbon nature and can enhance reservoir characterization.

Keywords: WTMM , seismic seismogram, well logs, singularities Spectrum, hydrocarbon nature.