油页岩原位开采中裂隙与井组相对位置及其产状对加热效果的影响
DOI:
作者:
作者单位:

吉林大学地球科学学院

作者简介:

通讯作者:

中图分类号:

TE19

基金项目:

吉林省重大科技攻关项目(20170201001SF);吉林省教育厅“十三五”科学技术项目(JJKH20180161KJ)联合资助


Impact of Fracture Occurrence and Relative Position on the Heating Effect in Oil Shale In-situ Mining
Author:
Affiliation:

College of Earth Science, Jilin University

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    当采用对流加热技术对地下油页岩进行加热时,油页岩层中因地应力所形成的自然裂隙与由水力压裂形成的人工裂隙共同构成了流体的运移通道。裂隙可为热流体提供通道,增大或者减小油页岩的加热范围;也可通过改变热流体的流动速度,影响油页岩的加热速度。因此充分地认识地下裂隙对油页岩加热效果的影响,确定合理的布井方式对油页岩的开采十分重要。通过使用商业仿真模拟软件ANSYS,简化复杂的地下裂隙问题建立三维模型,对向地下注热流体加热油页岩这一过程进行数值模拟。以此来模拟油页岩原位注热开采中的温度场,探究并分析不同裂隙位置与产状条件下油页岩的加热效果。模拟结果表明,加热5年后即可达到稳态,加热井远离开放裂隙,生产井位于加热井与开放裂隙之间时油页岩加热效果更好。井组连线的走向垂直于裂隙走向时,加热效果更好;开放裂隙垂直于岩层时,加热效果更好。

    Abstract:

    When convective heating technology is used to heat underground oil shale, the natural fissure formed by the ground stress in the oil shale layer and the artificial fissure formed by hydraulic fracturing together constitute the fluid migration channel. The fissure can provide a passage for the hot fluid to increase or decrease the heating range of the oil shale; it can also affect the heating rate of the oil shale by changing the flow velocity of the hot fluid. Therefore, it is very important to fully understand the influence of underground fissures on the heating effect of oil shale and determine the reasonable well placement method for oil shale mining. By using the commercial simulation software ANSYS, the complex underground crack problem is simplified to establish a three-dimensional model, and the process of heating the oil shale with heat fluid injection is numerically simulated. By simulating the temperature field of oil shale in-situ hydrothermal mining, the heating effect of oil shale under different fracture locations and occurrence is explored and analyzed. The simulation results show that the steady state can be reached after heating for 5 years. when the heating well is far away from the open crack, and the production well is located between the heating well and the open crack, the oil shale heating effect is better . When the direction of the well group connection is perpendicular to the fracture direction, the heating effect is better; when the open fracture is perpendicular to the rock formation, the heating effect is the better .

    参考文献
    相似文献
    引证文献
引用本文

王英英,薛林福. 油页岩原位开采中裂隙与井组相对位置及其产状对加热效果的影响[J]. 科学技术与工程, 2019, 19(35): 141-147.
Wang Ying-ying and. Impact of Fracture Occurrence and Relative Position on the Heating Effect in Oil Shale In-situ Mining[J]. Science Technology and Engineering,2019,19(35):141-147.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-05-07
  • 最后修改日期:2019-09-24
  • 录用日期:2019-08-07
  • 在线发布日期: 2020-01-02
  • 出版日期:
×
律回春渐,新元肇启|《科学技术与工程》编辑部恭祝新岁!
亟待确认版面费归属稿件,敬请作者关注