Development and Application of Recyclable Fracturing Fluid in Changqing Oilfield

  • Dan KuangEmail author
  • Jianwen Bai
  • Chunguo Mou
  • Yan Gao
  • Feiqi Teng
  • Xiaoli Chen
Conference paper
Part of the Springer Series in Geomechanics and Geoengineering book series (SSGG)


“Low permeability, low pressure and low abundance” is the typical characteristic of Changqing sandstone Oilfield. To develop this block economically, large-scale stimulation was often required, which would bound to be encountered with a lot of fracturing fluid flowback waste, resulting in much more emissions of wastewater and the disaster problems of environmental pollution. Studies have carried out with characteristics of fracturing fluid, mechanism of crosslinking, mechanism of gel breaking, and the analysis of the reusability conditions which impacted fracturing fluid. Two kinds of recyclable fracturing fluid system called low molecular environmental fracturing fluid and bio-clean fracturing fluid are being researched independently, thus the problems of reversible crosslinking and reusing about fracturing fluid were resolved successfully. The emission of wastewater was reduced, even water resources and raw materials were saved; as a result, the reuse of fracturing fluid was achieved. More than 520 times field tests were carried out in different regions of Changqing Oilfield by using low molecular environmental fracturing fluid and bio-clean fracturing fluid, and the volume of recycling liquid was almost over 47,600 m3. Data showed that the average utilization rate of fracturing fluid recycling solution was higher than 98% and fracturing fluid recycling solution could be reused ten times at best conditions. Both the work time was shortened to 680 days and 38,000,000 RMB of costs was saved. Site result positively shows that conducting the brand-new recyclable fracturing fluid large scale can effectively enable to reduce energy consumption and the environmental impact, at the same time achieve the reuse of water resources and raw materials and shorten the construction time, with the good efficiency socially and economically.


Environmental fracturing fluid Bio-clean fracturing fluid Reversible crosslinking 



Fund Project: PetroChina Corporation special science and technology issues “Study on Stable Production and Enhanced oil Recovery in Changqing Gas Field” (2016E-0509).


  1. 1.
    Chen T, Hu J (2000) Petroleum engineering. Petroleum Industry Press, Beijing, pp 376–406Google Scholar
  2. 2.
    Jiang R, Jiang T, Wang Y (2004) Present development and prospecting of hydraulic fracturing technology. Oil Drill Prod Technol 26(4):52–57Google Scholar
  3. 3.
    Tong M (1996) Oilfield chemistry. Petroleum University Press, DongYing, pp 43–57Google Scholar
  4. 4.
    Li X (1995) The internal and overseas development situation of additives for water-base hydrofracturing fluids. Chem Eng Oil Gas 24(1):12–17Google Scholar
  5. 5.
    Bo Z, He C (2007) Break mechanism of viscoelastic surfactant fracturing fluids. Xinjiang Pet Geol 28(1):82–84Google Scholar
  6. 6.
    Zhao R, Fan W et al (2000) To understand polymer free fluid for new fracturing fluids. Word Pet Ind 7(6):42–46Google Scholar
  7. 7.
    Gadberry JF, Hoey MD, Franklin R, del Carmen Vale G, Mozayeni F (1999) Surfactants for hydraulic fracturing compositions. US Patent 5979555Google Scholar
  8. 8.
    Zhao X, Ji C et al (2000) Foreign new non-damaging fracturing fluid technology. Foreign Oilfield Eng 16(11):5–6Google Scholar
  9. 9.
    Dang M, Li C et al (2001) Polymer-free fluid for hydraulic fracturing. Fault-block Oil Gas Field 8(3):28–32Google Scholar
  10. 10.
    Liu X, Yi M et al (2001) Viscoelastic surfactant based fracturing fluids. Oilfield Chem 18(3):273–277Google Scholar
  11. 11.
    He Z (2001) Polymer free fluid for fracturing fluids. Foreign Oilfield Eng 17(1):13–16MathSciNetGoogle Scholar
  12. 12.
    Chen F, Wang A et al (2002) Development of clear fracturing fluids in abroad. J Southwest Pet Inst 24(5):65–67Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Dan Kuang
    • 1
    • 2
    Email author
  • Jianwen Bai
    • 1
    • 2
  • Chunguo Mou
    • 1
    • 2
  • Yan Gao
    • 3
  • Feiqi Teng
    • 1
    • 2
  • Xiaoli Chen
    • 1
    • 2
  1. 1.Sulige Gas Field Research Center of Changqing Oilfield Company, PetroChinaXi’anChina
  2. 2.State Engineering Laboratory of Low Permeability Oil and Gas Exploration and DevelopmentXi’anChina
  3. 3.Changqing Downhole Technology CO., Chuanqing Drilling Company, PetroChinaXi’anChina

Personalised recommendations