1887

Abstract

Summary

Low permeability is one of the typical characteristics of tight-oil sandstone reservoirs. The matrix permeability is generally less than 0.1 mD under the geological conditions. Tight sandstone reservoirs usually exhibit complex pore structure and complex logging response characteristics. It brings great challenge to logging interpretation. For the special geological characteristics and petrophysical characteristics of tight-oil sandstone reservoirs in Ordos basin, this paper proposed a comprehensive evaluation method based on the matching relation between the quality of source rock and the quality of storage space. At first, the quality of source rocks (total organic carbon), the quality of reservoir (sandbody structure index and heterogeneity index of oil saturation), and quality of engineering (brittleness index) of tight sandstone reservoir are quantitative calculated using the conventional logging data. Then, the sweet spots index (SSI) is established using these parameters. The sweet spots distribution of Chang 7 formation in X well area, Jiyuan oilfiled is determined by multi-well evaluation. The well testing data verified the validity and reliability of the sweet spots prediction method proposed in this paper. The method plays an important role in guiding optimization exploration and development for tight-oil sandstone reservoirs.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201800813
2018-06-11
2024-03-29
Loading full text...

Full text loading...

References

  1. Du, J., He, H., Yang, Tao., Huang, F., Guo, B., Yan, W.
    [2014] Progress in China’s tight oil exploration and challenges. China Petroleum Exploration, 19(1): 1–9.
    [Google Scholar]
  2. Li, C., Li, C., Hou, Y., Shi, Y., Wang, C., Hu, F., Lm, M.
    [2015] Well logging evaluation of Triassic Chang 7 Member tight reservoirs, Yanchang Formation, Ordos Basin, NW China. Petroleum Exploration & Development, 42(5): 667–673.
    [Google Scholar]
  3. Passey, Q., Moretti, F., Kulla, J., Creaney, S., Stroud, J.
    [1990]. Practical model for organic richness from porosity and resistivity logs. AAPG Bulletin, 74(12) 1777–1794.
    [Google Scholar]
  4. Rickman, R., Mullen, M., Petre, J., Grieser, W., Kundert, D.
    [2008] A practical use of shale petrophysics for stimulation design optimization: all shale plays are not clones of the Barnett shale. SPE Technical Conference and Exhibition.
    [Google Scholar]
  5. Sondergeld, C., Newsham, K., Comisky, J., Rice, M., Rai, C.
    [2010]. Petrophysical considerations in evaluating and producing shale gas resources. SPE Unconventional Gas Conference.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201800813
Loading
/content/papers/10.3997/2214-4609.201800813
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error