摘要
针对9mm壁厚的102射孔枪在井液环境下的抗动载能力进行了系统的数值分析,用有限元软件流固耦合算法模拟了射孔枪在井液环境下的冲击响应。计算结果表明,射流孔及泄压孔孔边纵向位置的应力集中最明显,即枪身沿轴向裂开的可能性较大。另外,对影响射孔枪胀形量的一些因素进行了分析,结果表明枪内压力及射孔枪壁厚对射孔枪胀形量的影响较大,而岩石刚度对射孔枪胀形量的影响较小。
The systematic numerical analysis of the anti-dynamic load ability of 102 perforator with wall thickness of 9 mm in well fluid environment is carried out,and the impact response of the perforator in the well fluid environment is simulated by using the fluid-solid coupling algorithm of finite-element software.The results show that the stress concentration is mostly localized in the axial edges of the perforator hole and pressure-leakage hole.This indicates that the perforator is apt to fracturing in the axial direction.In addition,the factors affecting the perforator deformation are analyzed and the results show that the pressure inside the perforator and the wall thickness of the perforator have greater influence on the deformation than the rock rigidity.
出处
《石油机械》
北大核心
2006年第12期25-27,46,共4页
China Petroleum Machinery
关键词
复合射孔枪
井液环境
冲击响应
流固耦合
数值模拟
composite perforator,well fluid environment,impact response,fluid-solid coupling,numerical simulation
