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Chemistry and Technology of Fuels and Oils

, Volume 55, Issue 4, pp 439–446 | Cite as

The Effect of Alkali on Reservoir Minerals and Deposition Characteristics

  • Zhou Yanxia
  • Lu Xiangguo
  • Zhang Yunbao
  • Xie Kun
INNOVATIVE TECHNOLOGIES OF OIL AND GAS
  • 4 Downloads

At present, alkali-surfactant-polymer (ASP) flooding in Daqing oilfield entered into the industrial application stage and demonstrated good result in increasing oil production and decreasing water-cut. However, using the ASP system with strong base caused serious problems at some blocks and wells. The influence of alkali on the formation could complicate maintaining oil product and improving recovery. In this paper the authors investigated reactions between alkali and reservoir minerals and their effects on seepage characteristic. The research was carried out on typical core sample from Daqing oilfield. The sample were characterized by pore structure, elemental composition, resistance facto, and residual resistance factor as evaluation indices. The results showed that the reservoir rocks of typical blocks in Daqing oilfield contained alkali-sensitive mineral. The degree of alkali-sensitivity damage was evaluated as mid-weak. Compared with a weak base (NaCO3), a strong base (NaOH) could cause higher damage to the reservoir. Moreover, alkali-sensitivity damage to reservoir minerals could lead to higher injection pressure.

Keywords

strong base and weak base alkali sensitivity injection pressure ASP flooding 

Notes

Acknowledgment

The authors would like to thank the research programs of Major National Projects of Thirteenth Five-year Plan: Integrated technology research and demonstration of water shutoff and profile modification for multizone water channeling in offshore Bohai Oilfield with high viscosity oil and high water cut (Project Number: 2016ZX05058-003-010) and the National Natural Science Foundation : basic research on salt-resistant polymer and its reservoir adaptability and improvement methods (Project number: 51574086) for financial support.

References

  1. 1.
    G. Y. Chen, Y. Ch. Tian, and X. Zhao, Acta Petr. Sin., 3, 459, (2012.Google Scholar
  2. 2.
    J.Ch. Cheng, J.Zh. Wu, and J.Q. Hu, Acta Petr. Sin., 2, 310 (2014).Google Scholar
  3. 3.
    Sh. Q. Hu, X. Li, X. G. Lu, Oilfield Chem., 4, 575 (2013).Google Scholar
  4. 4.
    J. L. Li, T. D. Li, and X. J. Chen, Petr. Geol. Oilfield Dev. in Daqing, 3, 89 (2008).Google Scholar
  5. 5.
    D. Sh. Liu, J. L. Li, T. D. Li, Acta Petr. Sin., 5, 139 (2007).Google Scholar
  6. 6.
    Y. Lu, C. Yu, Y. F. Wang, J. Oil Gas Tech 9, 241 (2012).Google Scholar
  7. 7.
    H. T. Wang, The dissolution and corrosion characteristics research of alkali ternary system to the reservoir minerals. China, Changchun: Jilin University (2012), p. 39-45.Google Scholar
  8. 8.
    Y. F. Wang, G. F. Yuan, J. Oil Gas Tech. (J. of Jianghan Petr. Inst.), 3, 103 (2009).Google Scholar
  9. 9.
    L. P. Wei, X. H. Wang, J. Oil Gas Tech. (J. of Jianghan Petr. Inst.), 6, 51 (2006).Google Scholar
  10. 10.
    H. F. Xia, X. Ch. Zhang, W. G. Ma, J. Xi’an Shiyou Univ. (Nat, Sci. Ed.), 6, 50 (2008).Google Scholar
  11. 11.
    B. Q. Xu, Special Oil and Gas Reservoirs, 45, 94 (2006).Google Scholar
  12. 12.
    J. F. Xu, X. D. Li, Z. N. Sun, J. China Univ. Petr., 5,130 (2014).Google Scholar
  13. 13.
    F. Yang, Y. J. Guo, X. M. Zhang, Acta Petr. Sin., 5, 908 (2014).Google Scholar
  14. 14.
    Y. Y. Zhu, Q. F. Hou, G. Q. Jian, Petr Explor. Devel. 1, 90 (2013).Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Zhou Yanxia
    • 1
    • 2
  • Lu Xiangguo
    • 1
    • 2
  • Zhang Yunbao
    • 1
    • 2
    • 3
  • Xie Kun
    • 1
    • 2
  1. 1.Key Laboratory of Enhanced Oil Recovery (Northeast Petroleum University), Ministry of EducationDaqingChina
  2. 2.Department of Petroleum EngineeringNortheast Petroleum UniversityDaqingChina
  3. 3.Bohai Petroleum Research Institute of Tianjin Branch of CNOOC (China) Co., Ltd.TangguChina

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