致密薄互层水力压裂裂缝垂面扩展施工因素数值模拟
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TE357.7

基金项目:

国家自然科学基金资助项目(51974282)


Numerical simulation study on the construction factors of vertical fracture propagation in tight and thin interlayer hydraulic fracturing
Author:
Affiliation:

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:

    我国具有丰富的致密油气藏储量,必将成为我国接替的油气资源。致密油藏开发主要依靠水力压裂技术,对于致密薄互层,施工因素作为可控因素,对于现场施工具有重要意义。因此,本文针对鄂尔多斯盆地致密储层,低孔低渗、储层厚度薄等特点,以该地区L井F12地层为例,采用Abaqus有限元软件进行了模拟计算,研究了施工过程中的排量以及压裂液粘度对裂缝垂面扩展规律的影响,并且根据实际情况对模型进行验证,确定了模型和模拟方法的准确性。研究结果表明:压裂液的排量对于裂缝的扩展具有重大影响,排量越大,裂缝的扩展速度越快,裂缝的缝高和缝宽越大;压裂液粘度对裂缝的扩展行为影响微乎其微。并进一步分析发现,针对致密薄互层,仅仅只改变压裂液排量和粘度并不能将裂缝控制在储层内,采用变排量控缝高技术辅以其它控缝高手段能够更好将裂缝控制在储层内,为现场压裂施工提供了基础。

    Abstract:

    Our country has abundant reserves of tight oil and gas reservoirs, which will surely become the oil and gas resources that my country will take over. The development of tight oil reservoirs mainly relies on hydraulic fracturing technology. For tight and thin interbeds, the construction factor is a controllable factor, which is of great significance for on-site construction. Therefore, in view of the characteristics of tight reservoirs in Yanchang, low porosity, low permeability, and thin reservoir thickness, taking the F12 formation of Well L in this area as an example, the Abaqus finite element software was used to simulate and calculate, and the drainage during the construction process was studied. The influence of the amount of fracturing fluid and the viscosity of fracturing fluid on the fracture vertical plane propagation law, and the model is verified according to the actual situation, and the accuracy of the model and the simulation method is confirmed. The research results show that the displacement of fracturing fluid has a significant impact on the expansion of fractures. The greater the displacement, the faster the expansion of cracks, and the greater the height and width of fractures. The viscosity of fracturing fluid has an influence on the expansion behavior of fractures. Minimal. And further analysis found that for tight and thin interbeds, only changing the displacement and viscosity of the fracturing fluid cannot control the fractures in the reservoir. Fractures are controlled within the reservoir, providing a foundation for on-site fracturing construction.

    参考文献
    相似文献
    引证文献
引用本文

景东阳,李治平,赵晓红,等. 致密薄互层水力压裂裂缝垂面扩展施工因素数值模拟[J]. 科学技术与工程, 2023, 23(14): 5988-5994.
Jing Dongyang, Li Zhiping, Zhao Xiaohong, et al. Numerical simulation study on the construction factors of vertical fracture propagation in tight and thin interlayer hydraulic fracturing[J]. Science Technology and Engineering,2023,23(14):5988-5994.

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:2022-07-01
  • 最后修改日期:2023-02-24
  • 录用日期:2022-11-24
  • 在线发布日期: 2023-06-01
  • 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