摘要
水力深穿透射孔技术作为新型完井技术能有效地改善开采环境和提高油气产量。但是,它在套管上开窗后会产生应力集中并导致套管强度损失问题。因此利用有限元分析方法,建立开窗套管三维受力模型并通过ANSYS仿真计算。重点研究了射孔参数对套管强度的影响规律并综合考虑产能影响提出射孔优选方案:孔距0.1～0.5m,孔径20～40mm,沿着最大水平地应力方向射孔并尽可能地增加射孔深度。本研究结果对水力深穿透射孔技术现场运用可提供参考依据。
Hydraulic deep-penetrating perforation technique was a new completion technique. This technique could improve production conditions and enhance oil production. However, the hole made by this technique would cause casing strength loss. 3D finite element mechanical model of hydraulic perforated casing was established with FEA software ANSYS and the effects of hydraulic perforating parameters on the mechanical strength of casing and oil production were studied comprehensively. The results indicate that by means of proper selection perforating parameters can decrease casing strength loss and improve oil production.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2009年第2期305-308,共4页
Journal of Oil and Gas Technology
关键词
深穿透射孔
强度损失
有限元模型
射孔参数
deep-penetrating perforation
strength loss
finite element model
perforating parameters
