Contrast well structure series at home and abroad, put forward well optimization of structure, and find suitable Wells in northeastern Sichuan structure series.
对比国内外井身结构系列，提出井身结构优化设计方法，并找到适合川东北地区的井身结构系列。
The analyzing result shows that the optimization of structure parameters of relief valve can increase the operating steady of valve and improve its speed of response.
结果表明，按平方误差积分准则对溢流阀进行优化，不仅能够提高溢流阀的稳定性，同时还能够改善其响应快速性。
结构优化；
结构优化；
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