2022年 01期

出砂井射孔套管变形分析及射孔参数优化

Deformation Analysis of Perforation Casings and Optimization of Perforation Parameters in Sand Production Wells


摘要(Abstract):

针对出砂井因上覆地层沉降与射孔段地层空洞而导致的射孔套管变形问题,采用有限元分析软件,建立考虑上覆地层位移与出砂空洞的射孔套管变形分析模型,采用经典Lame公式验证模型的正确性,分析射孔孔眼密度、孔径和射孔相位角对射孔套管变形的影响。结果表明:出砂井射孔套管在轴向载荷作用下的变形不同于在径向挤压作用下的变形,微小的上覆地层位移就能导致射孔套管发生大变形;当射孔孔眼密度为25~30 m~(-1),孔径为13~15 mm,相位角为45°、60°或90°时,能够有效减小上覆地层位移造成的射孔套管变形。

关键词(KeyWords): 出砂井;射孔套管;射孔参数;变形分析模型;上覆地层位移

基金项目(Foundation): 国家重点研发计划项目(2018YFC0310201);; 中国博士后科学基金特别资助(站前)项目(2021TQ0273)

作者(Author): 姜广彬,郭晓强,张瑞霞,柳军

DOI: 10.13349/j.cnki.jdxbn.20210901.005

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