满足连续管带压提下要求的悬挂密封器弹性密封体优化设计

Study on optimum design of elastic seal body of suspension sealer for lifting and lowering continuous tube under pressure

针对在对油井井底进行温度、压力监测过程中,井口密封装置无法满足连续管带压提下要求的问题,开展了连续管带压提下作业方案的研究。设计了连续管带压提下悬挂密封器,并采用二次序列规划法及田口优化法,对悬挂密封器的关键零部件弹性体进行结构尺寸优化。通过对比分析两种优化方法得到的结果,确定了弹性体最佳结构尺寸。室内试验表明,采用两种优化方法计算得到的弹性体结构尺寸与性能,皆与试验结果一致,验证了弹性体结构尺寸最优解的可靠性。

The wellhead seal of a suspension sealer can not meet requirements of lifting and lowering of a continuous tube at oil well bottom under pressure during the temperature and pressure monitoring,so the technical scheme research on lifting and lowering operation of the continuous tube under pressure is conducted.The suspension sealer is designed,and the structural dimension optimization of the elastic seal body as the key component of the suspension sealer is carried out by using the quadratic sequence planning method and the Taguchi optimization method.The optimal structural dimension of the elastic seal body is determined by comparing the results of the two optimization methods.The indoor test shows that the structural dimension and function of the elastic seal body determined by the two optimization methods are well agreeable with the test results,verifying the reliability of the optimization solution.