【摘要】 利用ANSYS有限元软件分析了射孔参数、盲孔结构、盲孔深度、温度、轴向载荷等因素对抗外挤强度的影响。结果表明:射孔枪抗外挤强度随着孔密的增加呈下降趋势,最佳值为20孔/米;随着孔径的增加,抗外挤强度逐渐减少,最优取值为10mm;随着相位角的增加,抗外挤强度呈现先减小后增加的趋势,最优选取90°;等深盲孔比不等深盲孔更能提高抗外挤强度;随着盲孔深度的增加,抗外挤强度下降,建议将盲孔深度控制在(4±0.5)mm;抗外挤强度随温度的升高而下降;抗外挤强度随轴向载荷的增加呈线性下降趋势。同时进行最高试验压力为210 MPa和260 MPa的压力试验,满足设计要求,为提高射孔枪抗外挤强度提供依据。更多还原

【Abstract】 The effects of perforation parameters, blind hole structure, blind hole depth, temperature and axial load on the outer pressure resistance of perforating gun were analyzed by finite element software ANSYS. The results show that: the outer pressure resistance of perforating gun decreases with the increase of hole density, and the optimum hole density is 20 holes/m; it decreases gradually with the increase of hole diameter, and the optimal hole diameter is 10 mm; it first decreases and then increases with the increase of phase angle, and the optimal phase angle is 90°; the equal-depth blind holes can improve the outer pressure resistance of perforating gun better than the unequal-depth blind holes; the outer pressure resistance of perforating gun decreases with the increase of blind hole depth,and it is suggested that the depth of blind holes should be controlled at(4±0.5)mm; the outer pressure resistance of perforating gun decreases with the rise of temperature; it decreases linearly with the increase of axial load. The tests with maximum pressure of 210 MPa and 260 MPa show that the perforating gun meets the design requirements and provides the basis for improving the outer pressure resistance of perforating gun.更多还原