西南石油大学学报(自然科学版)

• 本期导读 • 上一篇    下一篇

特低渗砂岩储层温度敏感性实验

孟选刚*,郭肖,高涛   

  1. “油气藏地质及开发工程”国家重点实验室· 西南石油大学,四川成都610500
  • 出版日期:2015-06-01 发布日期:2015-06-01
  • 通讯作者: 孟选刚,E-mail:570624159@qq.com
  • 基金资助:

    国家科技重大专项(2011ZX05015 002)。

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

摘要:

温度对特低渗砂岩渗透率的影响存在争议,且温度对砂岩渗透率应力敏感性的影响研究较少。以延长油田
特低渗砂岩岩芯为研究对象,应用室内物理模拟实验研究了不同压力条件下温度对特低渗砂岩渗透率的影响以及温
度对特低渗砂岩应力敏感性的影响。实验研究表明:在高围压(20.0 MPa)下,温度从30 ?C增加到150 ?C砂岩渗透
率几乎不变;在低围压(3.0 MPa)下,温度从30 ?C增加到150 ?C时砂岩渗透率降低了13.47%;温度从30 ?C增加到
150 ?C,储层渗透率应力敏感性伤害程度增加了3.8%,高温条件下比低温条件下应力敏感性增强。

关键词: 特低渗透, 砂岩, 温度, 渗透率, 应力敏感

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