煤样三维渗透率应力敏感性试验研究

发布时间：2018-01-18 11:32

  本文关键词：煤样三维渗透率应力敏感性试验研究　出处：《煤田地质与勘探》2016年03期 　论文类型：期刊论文

  更多相关文章： 煤样 三维 渗透率 应力敏感性

【摘要】：目前国内三维渗透率测试研究处于起步阶段,利用自主研发的煤样三维渗透率测试仪,可以模拟实现真实三向应力状态下流体通过立方体煤样孔隙的三维渗流,并进行真实三向应力条件下煤样渗透率应力敏感性试验研究。试验结果表明,真实三向应力作用下煤样水平最大主应力对煤样水平方向渗透性的影响程度大于水平最小主应力;煤样三维渗透率对三向应力的敏感程度不同,对垂直应力的敏感性最强,水平最大主应力次之,水平最小主应力最小。
[Abstract]:At present, the research of three-dimensional permeability measurement in China is in the initial stage. Using the self-developed three-dimensional permeability tester of coal sample, the three-dimensional seepage through cubic coal sample pore can be simulated under the condition of true three-direction stress. The experimental study on permeability stress sensitivity of coal samples under the condition of true triaxial stress is carried out. The effect of the maximum principal stress on the horizontal permeability of coal samples is greater than that of the minimum horizontal principal stress under the action of true triaxial stress. The three dimensional permeability of coal samples is sensitive to three dimensional stress, the sensitivity to vertical stress is the strongest, the horizontal maximum principal stress is the second, and the horizontal minimum principal stress is the least.
【作者单位】： 中国石油大学(北京);中国石油长城钻探工程公司;
【基金】：国家科技重大专项项目(2011ZX05042) 山西省煤层气联合基金项目(2012012005)~~
【分类号】：TD712;TQ533
【正文快照】： Foundation item:National Science and Technology Major Project(2011ZX05042);Shanxi Provincial Basic Research Prgogram—Coal BedMethane Joint Research Foundation(2012012005)引用格式:张羽,张遂安,杨立源,等.煤样三维渗透率应力敏感性试验研究[J].煤田地质与勘探,2，

本文编号：1440762