基于正交实验法射孔参数优化设计数值模拟研究
DOI:
作者:
作者单位:

1.中海油研究总院有限责任公司 北京;2.西安石油大学 西安

作者简介:

通讯作者:

中图分类号:

TE257

基金项目:

国家自然科学“基于离散裂缝网络的致密油藏体积压裂水平井渗吸产能研究”(编号:52104033)


Numerical simulation investigation of perforation parameter optimization design based on orthogonal experimental method
Author:
Affiliation:

1.CNOOC Research Institute Co Ltd;2.Xi'3.'4.an Shiyou University,Xi'5.an

Fund Project:

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

    射孔完井对油井产能的主要影响因素为孔眼密度、孔眼直径、孔眼深度和孔眼相位,基于油井产能最优对射孔参数进行优化设计是提高射孔井产能的关键技术之一。本文基于射孔井产能的半解析模型,应用有限元分析法对射孔井的产能进行数值模拟研究,并应用正交实验法对数值模拟结果进行分析。结果表明:随着孔深的增加,产率比增加,且在孔深较小时斜率较大,当穿孔深度超过钻井污染带深度时,曲线出现拐点,斜率变小、变平。随着孔径的增大,产率比增大,在实际射孔过程中,考虑到套管强度的问题,孔径应在保证套管强度的情况下尽可能取最大值。当孔密增大时,产率比随之增大,且随孔密的增大,其产率比上升趋势减弱。相位角增大时,产率比减小,相位角从60°变到90°时,产能有较大的提高,相位角在90°和180°之间变化时产能变化不大。通过比较极差值R来判断各个因素的主次关系。本文可为射孔参数的优选提供指导。

    Abstract:

    The main influencing factors of perforation completion on oil well productivity are hole depth, hole density, hole diameter and hole phase. The optimal design of perforation parameters based on the optimal oil well productivity is one of the key technologies to improve the productivity of perforated wells. Based on the semi analytical model of perforated well productivity, this article uses the finite element analysis method to simulate the productivity of perforated well, and uses the orthogonal experimental method to analyze the numerical simulation results. The results show that the productivity ratio increases with the increase of hole depth, and the slope is large when the hole depth is small. When the hole depth exceeds the depth of drilling pollution zone, the curve has an inflection point, and the slope becomes smaller and flattened. With the increase of hole diameter, the productivity ratio increases. In the actual perforation process, considering the problem of casing strength, the hole diameter should be taken as maximum as possible under the condition of ensuring casing strength. The productivity ratio increases with the increase of pore density, and the upward trend of productivity ratio decreases with the increase of pore density. With the increase of phase angle, the productivity ratio decreases. When the phase angle changes from 60 ° to 90 °, the productivity increases greatly. When the phase angle changes between 90 ° and 180 °, the productivity does not change much. The primary and secondary relations of each factor is judged by comparing the range value R. This article can provide guidance for the optimization of perforation parameters.

    参考文献
    相似文献
    引证文献
引用本文

幸雪松,邱浩,文敏,等. 基于正交实验法射孔参数优化设计数值模拟研究[J]. 科学技术与工程, , ():

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:2021-11-15
  • 最后修改日期:2022-03-31
  • 录用日期:2022-04-30
  • 在线发布日期:
  • 出版日期:
×
关于近期《科学技术与工程》编辑部居家办公的说明
亟待确认的版面费信息