Applied Geophysics

, Volume 11, Issue 1, pp 9–22 | Cite as

Rock physics modeling of heterogeneous carbonate reservoirs: porosity estimation and hydrocarbon detection

  • Hao Yu
  • Jing BaEmail author
  • Jose Carcione
  • Jin-Song Li
  • Gang Tang
  • Xing-Yang Zhang
  • Xin-Zhen He
  • Hua Ouyang


In heterogeneous natural gas reservoirs, gas is generally present as small patchlike pockets embedded in the water-saturated host matrix. This type of heterogeneity, also called “patchy saturation”, causes significant seismic velocity dispersion and attenuation. To establish the relation between seismic response and type of fluids, we designed a rock physics model for carbonates. First, we performed CT scanning and analysis of the fluid distribution in the partially saturated rocks. Then, we predicted the quantitative relation between the wave response at different frequency ranges and the basic lithological properties and pore fluids. A rock physics template was constructed based on thin section analysis of pore structures and seismic inversion. This approach was applied to the limestone gas reservoirs of the right bank block of the Amu Darya River. Based on poststack wave impedance and prestack elastic parameter inversions, the seismic data were used to estimate rock porosity and gas saturation. The model results were in good agreement with the production regime of the wells.


Rock physics modeling Biot-Rayleigh theory heterogeneity porosity saturation velocity dispersion gas reservoir detection 


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Copyright information

© Editorial Office of Applied Geophysics and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Hao Yu
    • 1
  • Jing Ba
    • 1
    Email author
  • Jose Carcione
    • 2
  • Jin-Song Li
    • 1
  • Gang Tang
    • 1
  • Xing-Yang Zhang
    • 1
  • Xin-Zhen He
    • 3
  • Hua Ouyang
    • 3
  1. 1.Research Institute of Petroleum Exploration and DevelopmentPetroChinaBeijingChina
  2. 2.Istituto Nazionale di Oceanografia edi Geofisica Sperimentale (OGS)Borgo Grotta Gigante 42cSgonico, TriesteItaly
  3. 3.Amu Darya Petroleum Company Ltd.CNPCBeijingChina

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