Advertisement

Geophysical Research Progress on Tight Sandstone Reservoir in International Cooperation Block of Sulige Gas Field

  • Xinning Zou
  • Tao Lu
  • Jinbu Li
  • Bin Fu
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

The tight sandstone reservoir in the cooperation block of Sulige gas field is characterized by thin gas-bearing sand, large variation laterally and strong heterogeneity. Owing to the complex surface conditions, and particularly the thick weathered zone, the 3D seismic data presented limited frequency bandwidth. Both processing and reservoir prediction did not achieve the expected effect. To enhance the reliability of predicted results, the reprocessing data with better quality were obtained in the pilot area by using the prestack data processing procedure with wider frequency, higher fidelity, and preserved amplitude at its core. Compared to the previous results, the reprocessing data exhibited wider bandwidth, higher resolution, and better consistency. The seismic forward modeling showed that the data could be used to discriminate over 10-m-thick single sand body or sand group and over 5-m-thick gas-bearing sand. Using crossplot interpretation of selected sensitive parameters, the thickness of reservoir and effective sandstone could be estimated quantitatively. Obvious enhancements were obtained for the well-seismic match of AVO features and which of the prestack seismic inversion. The research findings in the pilot area will have an important guidance to the development of international cooperation block in Sulige gas field.

Keywords

Sulige gas field Tight sandstone reservoir 3D seismic Prestack processing Seismic reservoir prediction 

Notes

Acknowledgements

Firstly, we would like to thank FIEDC for providing us with this technical exchange opportunity. And we also would like to extend deep gratitude to three senior geophysicists from Changqing Branch of Geophysical Research Institute, BGP, CNPC: Shang Changliang, Li Jinfu, and Gu Faming, for their help.

References

  1. 1.
    Xiaoqi D, Shaonan Z, Wen Z et al (2007) Characteristics and genesis of the Upper Paleozoic tight sandstone reservoir in the northern Ordos basin. Oil Gas Geol 28(4):492–496Google Scholar
  2. 2.
    Mingrui L, Weitan D, Hongbin L et al (2009) Model for tight lithologic gas accumulation in Upper Paleozoic, east of Ordos basin. Pet Explor Dev 36(1):56–61Google Scholar
  3. 3.
    Schapper S, Jefferson R, Calvert A et al (2009) Anisotropy velocities and offset vector tile prestack-migration processing of the Durham Ranch 3D, Northwest Colorado. Lead Edge 28(11):1352–1361CrossRefGoogle Scholar
  4. 4.
    Stein JA, Wojslaw R, Langston T et al (2010) Wide-azimuth land processing: fracture detection using offset vector tile technology. Lead Edge 29(11):1328–1337CrossRefGoogle Scholar
  5. 5.
    Li X (2008) An introduction to common offset vector trace gathering. CSEG Recorder 33(9):28–34Google Scholar
  6. 6.
    Duan W, Li F, Wang Y et al (2013) Offset vector tile for wide–azimuth seismic processing. OGP 48(2):206–213Google Scholar
  7. 7.
    Zou X, Sun W, Wang D et al (2005) The reservoir prediction of low permeability sandstone in Sulige gas field. GPP 44(6):621–626Google Scholar
  8. 8.
    Shao L, Wang J, Zhang L et al (2016) Application of pre-stack simultaneous inversion in low porosity and permeability sandstone reservoirs prediction and hydrocarbon detection. Geol Sci Technol Inf 35(3):145–150Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Sulige Gasfield Research Center, Petrochina Changqing Oilfield CompanyBeijingChina

Personalised recommendations