Micro-Pore Characteristics and its Control Factors Analysis of Chang8₁ Reservoir of Huanjiang Area

Abstract:

Micro-pore characteristics and its control factors are analyzed according to mercury penetration, physical property parameters, flake observation and scanning electron microscopy, etc. Studies show that Chang8₁ reservoir is ultra-low permeability, its main pore types are intergranular pore and feldspar dissolved pore, its main pore throat types are low porosity, fine throat to micro-fine throat. Diagenesis stage of Chang 8₁ reservoir is situated in the diagenetic stage B. compaction mainly reduce the pore space, while the micro-cracks caused by compaction can be good reservoir space; ferrocalcite cement, Chlorite coating and kaolinite would destroy the reservoir space by filling in the primary pores and secondary pores; hydration of feldspar would destroy the reservoir space, while dissolution of feldspar would improve the reservoir space; dissolution of feldspar is the most favorable diagenesis.

• Periodical: Applied Mechanics and Materials (Volumes 522-524)
• Pages: 1257-1261
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.522-524.1257
• Online since: February 2014
• Authors: Bing Xi Li*, Yuan Ting Cao, Wen Zhong Ma
• Keywords: Diagenesis, Huanjiang Area, Micro-Pore Characteristics

References

[1] Hua Yang, Jinhua Fu, Xinshan Wei. Natural gas industry, Vol. 25 (2005), pp.5-8. In Chinese.

[2] Zhiqiang Zhang, Junwei Zheng. Advances in earth science, Vol. 24 (2009), pp.854-864. In Chinese.

[3] The Division of Diagenetic stages in Clastic Rocks. Petroleum Industry Standard, 2003. In Chinese.

[4] Caineng Zou, Shigen Tao, Hui Zhou. Petroleum Exploration and Development, Vol. 35 (2008), pp.526-540. In Chinese.