关键词: 低渗透, 砂岩, 产能评价, 压裂, 优选

Abstract: Low-permeability sandstone reservoir’s flow potential is seriously influenced by lithology and physical property.
The natural productivity is relatively low，which will perform well only after the reservoir reconstruction. Through the discussion
of rock mineral，clay mineral，calcareous cement and microscopic pore structure，combined with well logs，cores and
experiments，in this paper the factors that have effort on low-permeability sandstone reservoir’s flow potential was analyzed，
the key parameters in the evaluation of low-permeability sandstone reservoir were determined，the optimized production layer
standards and plates for the fracture of low-permeability sandstone reservoir were figured out，the optimized logging model
for reservoir fine evaluation and productivity prediction was established，and finally the optimized fracturing production layers
hierarchically were classified. This result will be the guidance for production and has utilization value in improving harvest rate
in the oil production test of reservoir and predicting effects after fracturing.

Key words: low-permeability, sandstone, productivity evaluation, fracturing, optimized