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Arabian Journal of Geosciences

, 12:595 | Cite as

Research on sensitivity damage of naturally fractured carbonate reservoirs in Ordos Basin

  • Lufeng ZhangEmail author
  • Fujian Zhou
  • Jianye Mou
  • Jin Wang
  • Jie Wang
  • Shicheng Zhang
ICCESEN 2017
  • 84 Downloads
Part of the following topical collections:
  1. Geo-Resources-Earth-Environmental Sciences

Abstract

Understanding mechanisms and performance of formation sensitivity damage in naturally fractured carbonate reservoirs is crucial for avoiding productivity attenuation at any development stage. In this paper, based on the investigation of reservoir microscopic feature, a series of experiments were conducted to systematically evaluate formation sensitivity damage through a multistep coreflood platform. Firstly, the influence of flow velocity on core permeability was studied. Then, coreflood experiments under the condition of beneath the threshold velocity were performed to research the influence of the salinity and PH value for the injected water on core permeability. Finally, four types of cores from Ordos Basin—matrix cores, non-packed cores, semi-packed cores, and fully-packed cores—were used to conduct stress sensitivity damage experiments. Permeability is measured in the process of increasing confining pressure with a constant pore pressure. The experiment results show that the velocity sensitivity of the reservoir is medium to strong and the threshold velocity is 0.28 m/d. The water sensitivity is weak and the average water sensitivity index is 22.62%. There is no alkali sensitivity. The stress sensibilities of these four types of cores ranking from strong to weak are non-packed cores, semi-packed cores, packed cores, and matrix cores. With the decrease in packing degree of core fractures, the stress sensitivity of core permeability increases and the recovery degree of permeability decreases. The influence factors of sensitivity damage are systematically studied and it provides the suggestions for stimulation design and development of naturally fractured carbonate reservoirs in Ordos Basin.

Keywords

Fractured carbonate reservoir Velocity sensitivity Water sensitivity Alkali sensitivity Stress sensitivity 

Notes

Funding information

This work is financially supported by the Foundation of State Key Laboratory of Petroleum Resources and Prospecting (Grant No. PRP/indep-4-1703), the National Science and Technology Major Projects of China (Grant Nos. 2016ZX05051 and 2017ZX05030), PetroChina Innovation Foundation (2018D-5007-0205), and the Science Foundation of China University of Petroleum at Beijing (Grant No. 2462017YJRC031).

References

  1. Basan PB (1985) Formation damage index number: a model for the evaluation of fluid sensitivity in shaly sandstones[C]//SPE Annual Technical Conference and Exhibition. Soc Pet EngGoogle Scholar
  2. Civan F (2007) Reservoir formation damage: fundamentals, modeling, assessment, and mitigation. Gulf Professional PubGoogle Scholar
  3. Civan F (2015) Reservoir rock. Gulf Professional PublishingGoogle Scholar
  4. Engelhardt W, Tunn WLM (1955) The flow of fluids through sandstones. Circular no. 194Google Scholar
  5. Franks S, Leonard R, He W, et al (2011) Reservoir drill-in fluid and formation damage of tight gas reservoirs[C]// AADE-11-NTCE-43 AADE national technical conference and exhibition, Houston, Texas, pp 12–14Google Scholar
  6. He Y, Cheng S, Li S, Huang Y, Qin J, Hu L, Yu H (2017) A semianalytical methodology to diagnose the locations of underperforming hydraulic fractures through pressure-transient analysis in tight gas reservoir[J]. SPE J 22(03):924–939CrossRefGoogle Scholar
  7. Johnston N, Beeson CM (1945) Water permeability of reservoir sands. Trans AIME 160(01):43–55CrossRefGoogle Scholar
  8. Nguyen PD, Weaver JD, Rickman RD, Dusterhoft RG, Parker MA (2007) Controlling formation fines at their sources to maintain well productivity. SPE Prod Oper 22(02):202–215Google Scholar
  9. Peng Z, Li X (2018) Improvements of the permeability experiment in coalbed methane. Arab J Geosci 11(11):259CrossRefGoogle Scholar
  10. Putthaworapoom N, Miskimins J L, Kazemi H (2012) Sensitivity analysis of hydraulic fracturing damage factors: reservoir properties and operation variables[C]//SPE/EAGE European Unconventional Resources Conference and Exhibition. Soc Pet EngGoogle Scholar
  11. Su W, Liu Y, Pi J, Chai R, Li C, Wang Y (2018) Effect of water salinity and rock components on wettability alteration during low-salinity water flooding in carbonate rocks. Arab J Geosci 11(11):260CrossRefGoogle Scholar
  12. SY/T5358 (2002) Formation damage evaluation by core flow test. Chinese Petroleum Industry, ChinaGoogle Scholar
  13. Yang S (2011) Fundamentals of petrophysics. Petroleum industry pressGoogle Scholar
  14. Yang R (2017) A new quantitative predicting method for water-sensitivity damage[C]//Offshore Technology Conference. Offshore Technology ConferenceGoogle Scholar
  15. Zhang L, Zhou F, Mou J, Xu G, Zhang S, Li Z (2018) A new method to improve long-term fracture conductivity in acid fracturing under high closure stress. J Pet Sci Eng 171:760–770CrossRefGoogle Scholar
  16. Zhang L, Zhou F, Zhang S, et al (2019a) Evaluation of permeability damage caused by drilling and fracturing fluids in tight low permeability sandstone reservoirs. J Pet Sci Eng 175:1122–1135Google Scholar
  17. Zhang L, Zhou F, Zhang S, Wang Y, Wang J, Wang J (2019b) Investigation of water-sensitivity damage for tight low-permeability sandstone reservoirs. ACS Omega 4(6):11197–11204CrossRefGoogle Scholar
  18. Zhang L, Zhou F, Mou J, Pournik M, Tao S, Wang D, Wang Y (2019c) Large-scale true tri-axial fracturing experimental investigation on diversion behavior of fiber using 3D printing model of rock formation. J Pet Sci Eng 181:106171CrossRefGoogle Scholar
  19. Zhang L, Zhou F, Feng W, Pournik M, Li Z (2019d) Experimental study on plugging behavior of degradable fibers and particulates within acid-etched fracture. J Pet Sci Eng 106455.  https://doi.org/10.1016/j.petrol.2019.106455
  20. Zhao T, Li X, Ning Z, Zhao H, Zhang J, Zhao W (2018) Pore structure and adsorption behavior of shale gas reservoir with influence of maturity: a case study of Lower Silurian Longmaxi formation in China[J]. Arab J Geosci 11(13):353CrossRefGoogle Scholar
  21. Zheng W, Liu Y, Huang J, Liu Y, Chen J (2018) Study on the optimal development method for offshore buried hill fractured reservoirs. Arab J Geosci 11(20):640CrossRefGoogle Scholar

Copyright information

© Saudi Society for Geosciences 2019

Authors and Affiliations

  • Lufeng Zhang
    • 1
    • 2
    Email author
  • Fujian Zhou
    • 1
    • 2
  • Jianye Mou
    • 2
  • Jin Wang
    • 1
    • 2
  • Jie Wang
    • 1
    • 2
  • Shicheng Zhang
    • 1
    • 2
  1. 1.The Unconventional Natural Gas InstituteChina University of Petroleum at BeijingBeijingChina
  2. 2.State Key Laboratory of Petroleum Resources and ProspectingChina University of Petroleum at BeijingBeijingChina

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