Advertisement

ESRV and Production Optimization for the Naturally Fractured Keshen Tight Gas Reservoir

  • Hongyan Qu
  • Fujian Zhou
  • Yan Peng
  • Zhejun Pan
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)

Abstract

The economic gas production in Keshen deep reservoir (7000–8038 m), located in the Tarim basin, as one of the largest gas resources in the north-west China, depends on the optimization of Effective Stimulated Reservoir Volume (ESRV), which was investigated through numerical simulations based on the match of fracture properties and reservoir capabilities under high pressure (>116 MPa) and high temperature (160–170 °C) in this study. An integrated multiphysical model, which couples gas flow with mechanical deformation and describes the gas flow interaction between the matrix, natural fractures and hydraulic fractures, was developed to optimize the ESRV and predict the production. Controlling factors of the ultimate gas recovery were analysed, and the impacts of pressure-dependent permeability of matrix and fracture systems on gas recovery were indicated through two case studies. Results show that if the impacts of effective stress on porosity and permeability were neglected, natural fracture spacing and permeability were the predominant factors affecting the ultimate gas recovery, whereas the half-length of the primary hydraulic fractures and the spacing of the secondary-fracture networks were more important for enhancing gas recovery due to the permeability sensitivity to the effective stress. This study improves the understanding of gas flow interaction among the matrix, natural fractures and hydraulic fractures in tight gas reservoir.

Keywords

ESRV and production optimization Keshen Tight gas Natural fracture Stress-dependent permeability 

Notes

Acknowledgements

This work is supported by the National Natural Science Foundation of China (Grant No. 51604286), Science Foundation of China University of Petroleum, Beijing (No. 2462014YJRC015, No. 2462016YJRC036), Foundation of State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing (No. PRP/indep-3-1707).

References

  1. 1.
    Clarkson CR, Freeman M, He L, Agamalian M, Melnichenko YB, Mastalerz M, Bustin RM, Adlinski APR, Blach TP (2012) Characterization of tight gas reservoir pore structure using USANS/SANS and gas adsorption analysis. Fuel 95:371–385CrossRefGoogle Scholar
  2. 2.
    Desbois G, Urai JL, Kukla PA, Konstanty J, Baerle C (2011) High-resolution 3D fabric and porosity model in a tight gas sandstone reservoir: a new approach to investigate microstructures from mm- to nm-scale combining argon beam cross-sectioning and SEM imaging. J Pet Sci Eng 78:243–257CrossRefGoogle Scholar
  3. 3.
    Zhang FX, Huang Y, Yang X, Qiu K, Yuan X, Luo F et al (2015) Natural productivity analysis and well stimulation strategy optimization for the naturally fractured Keshen reservoir. In: Conference and exhibition. SPE Oil & Gas IndiaGoogle Scholar
  4. 4.
    Littke R, Bayer U, Gajewski D, Nelskamp S (2008) Dynamics of complex intracontinental basins the Central European Basin System. Springer, Berlin-Heidelberg. ISBN 978-3-540-85084-7CrossRefGoogle Scholar
  5. 5.
    Zou C, Zhu R, Liu K, Su L, Bai B, Zhang X, Yuan X, Wang J (2012) Tight gas sandstone reservoirs in China: characteristics and recognition criteria. J Pet Sci Eng 88–89:82–91CrossRefGoogle Scholar
  6. 6.
    McGuire WJ, Sikora VJ (1960) The effect of vertical fractures on well productivity. Trans AIME 219(10):401–403Google Scholar
  7. 7.
    Tinsley JM, Williams JR Jr, Tiner RL et al (1969) Vertical fracture height-its effect on steady state production increase. J Pet Technol 21(5):633–638CrossRefGoogle Scholar
  8. 8.
    Kasap E, Bush ES (2003) Estimating a relationship between pore pressure and natural fracture permeability for highly stressed reservoirs. In: Conference and exhibition. SPE annual technical, Denver, Colorado, USA, 5–8 Oct 2003Google Scholar
  9. 9.
    Cho Y, Ozkan E, Apaydin OG (2012) Pressure-dependent natural-fracture permeability in shale and its effect on shale-gas well production. In: Conference and exhibition. SPE annual technical, San Antonio, USA, 8–10 Oct 2012Google Scholar
  10. 10.
    Aybar U, Eshkalak MO, Sepehrnoori K, Patzek T (2014) Long term effect of natural fractures closure on gas production from unconventional reservoirs. In: SPE eastern regional meeting, Charleston, WV, USA, 21–23 Oct 2014Google Scholar
  11. 11.
    Yang HJ, Zhang H, Cai Z, Chen S, Yuan F, Wang H et al (2015) The relationship between geomechanical response of natural fractures and reservoir productivity in Keshen tight sandstone gas field, Tarim Basin, China. In: Conference and exhibition, SPE Asia Pacific Unconventional ResourcesGoogle Scholar
  12. 12.
    Ruyan S, Hua L, Xiyong X, Liangcheng D (2003) Performance analysis of fractured horizontal wells in tight gas reservoirs. PGRE 10(1):40–42Google Scholar
  13. 13.
    Manrique JF, Poe BD (2007) Evaluation and optimization of low conductivity fractures. In: Conference SPE hydraulic fracturing technology, College Station, Texas, USAGoogle Scholar
  14. 14.
    Clarkson CR, Beierle JJ (2011) Integration of microseismic and other post-fracture surveillance with production analysis: a tight gas study. J Nat Gas Sci Eng 3:382–401CrossRefGoogle Scholar
  15. 15.
    Wei Y, Jia A, He D, Ji G (2012) A new way of evaluating productivity of staged fracturing horizontal well in tight gas reservoir. Drill Prod Technol 35(1):32–34Google Scholar
  16. 16.
    Bonyadi M, Rahimpour MR, Esmaeilzadeh F (2012) A new fast technique for calculation of gas condensate well productivity by using pseudo pressure method. J Nat Gas Sci Eng 4:35–43CrossRefGoogle Scholar
  17. 17.
    Qiu X, Li Z, Liu Y, Lai F (2013) Analysis of productivity equation and influence factors of horizontal wells in tight sand gas reservoir. J Southwest Pet Univ Sci Technol Ed 35(2):141–145Google Scholar
  18. 18.
    Li Q, Chen C, Xun X (2013) A new method of predicting gas wells’ productivity of fractured horizontal well of low-permeability tight gas reservoir. Nat Gas Geosci 24(3):633–638Google Scholar
  19. 19.
    Ostojic J, Rezaee R, Bahrami H (2012) Production performance of hydraulic fractures in tight gas sands, a numerical simulation approach. J Pet Sci Eng 88–89:75–81CrossRefGoogle Scholar
  20. 20.
    Ranjbar E, Hassanzadeh H (2011) Matrix–fracture transfer shape factor for modeling flow of a compressible fluid in dual-porosity media. Adv Water Resour 34:627–639CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Hongyan Qu
    • 1
    • 2
  • Fujian Zhou
    • 1
    • 2
  • Yan Peng
    • 1
    • 3
  • Zhejun Pan
    • 4
  1. 1.State Key Laboratory of Petroleum Resources and ProspectingChina University of PetroleumChangping, BeijingChina
  2. 2.Unconventional Natural Gas Institute, China University of PetroleumChangping, BeijingChina
  3. 3.School of Petroleum EngineeringChina University of PetroleumChangping, BeijingChina
  4. 4.CSIRO Energy FlagshipClayton SouthAustralia

Personalised recommendations