西南石油大学学报(自然科学版)

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Temperature Sensitivity Experiment on Ultra-low Permeability
Sandstone Reservoir

Meng Xuangang*, Guo Xiao, Gao Tao   

  1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
  • Online:2015-06-01 Published:2015-06-01

Abstract:

The influence of temperature on the permeability of sandstone is controversial,and there are only a few studies on the
effect of temperature on permeability sensitivity in sandstone reservoirs. In this paper,experiment of effect of temperature on
permeability and stress sensitivity is conducted on a core from an ultra-low permeability reservoir,Yanchang Oilfield. In door
physical simulation is taken as study method. Results show that,under low confining pressure(3.0 MPa),when temperature
increases from 30 ?C to 150 ?C,permeability decreases by 13.47%,and stress sensitivity increases by 3.8%. When confining
pressure is 20.0 MPa,permeability stays unchanged when temperature increases from 30 ?C to 150 ?C. Stress sensitivity is
stronger under higher temperature.

Key words: ultra-low permeability, sandstone, temperature, permeability, stress sensitivity