西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (3): 133-136.

• 石油与天然气工程 • Previous Articles     Next Articles

Research on Mechanism and Sand-Carrying Performance of the Surfactant Fracturing Fluid

LI Shu-guang 1，2 GUO Da-li 3，4 ZHAO Jin-zhou 3，4 ZENG Xiao-hui 4
  

  1. 1. Department of Energy and Resources Engineering, College of Engineering, Peking University, Haidian, Beijing 100871, China
    2. Exploration and Development Department of PetroChina CoalBed Methane Company Limited, Chaoyang, Beijing 100028, China
    3. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China
    4. School of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-06-20 Published:2011-06-20

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Abstract: By applying experimental methods of transmission and scanning electron microscopy and the basic theory of surfactant solution, the relevance of surfactant inhesion and extrinsic in macroscopic and microscopic of surfactant are analyzed, and the gel forming mechanism and the gel breaking mechanism are investigated. The mechanism of surfactant fracturing fluids carrying sand mainly by elastic is demonstrated, and we put forward the new method by using suspending shear force to indicate the sand-carrying capacity of surfactant fracturing fluid. The results

of experiment indicate that the minimum sand-carrying viscosity are 100 mPa·s and 30 mPa·s in the same 100s􀀀1 shear rates for guanidine gel fracturing fluid and surfactant fracturing fluids; in the same shear rate, minimum sandcarrying
viscosity of surfactant fracturing fluid is much smaller than guanidine gel. The above research results enrich the correlate knowledge in theory, and it helps surfactant fracturing fluid application.

Key words:

surfactant, fracturing fluid, gel forming mechanism, sand-carrying performance, suspending shear force

CLC Number: