Print this pageHydrocarbon Detection of Fractured Carbonate Reservoir
Qinhua, Sun 1; Jianxin, Liu 1; Huquan, Zhang
1; Xiaomei, Liu 1
(1)NWGRI, Lanzhou, China.
Hydrocarbon detection plays a more and more important role in
exploration and development of farctured carbonate reservoir. When seismic wave
moves through hydrocarbon fractured reservoir, it may result in energy
attenuation and high frequency 
loss
for the sake of imperfectly elasticity.
According to the above theory, we present a new hydrocarbon detection
technology of fractued carbonate reservoir base on wavelet attenuation
spectrum. Firstly we remove noise of seismic data which decrease ambiguity of
spectrum absorption
. Then we estimate spectrum of signal and wavelet for each
trace from a horizon consistent time window both above and below the zone of
interest by means of cepstral technology. Then we estimate attenuation spectrum
of two time widows. Attenuating more severely show oil and gas accumulation. In
practice application of fractured reservoir in y2 well field, compared with
other hydrocarbon detection technology based on seismic data of reservoir, this
technology is more sensitive to accumulation of oil and gas. This hydrocarbon
detection technology play an important role in exploration and development of
fracture type carbonate reservoir in y2 well field of T basin.
AAPG Search and Discovery Article #90135©2011 AAPG International Conference and Exhibition, Milan, Italy, 23-26 October 2011.