1) wellhead self-sealing
井口自封
2) mouth of oil well
封井井口
1.
A coupled thermodynamic model of frozen heave at the mouth of oil well under severe winter climate is put forward.
采用该耦合热力模型对辽河油田封井井口的耦合冻胀问题进行计算。
3) Wellhead Seal
井口密封
4) well head dynamic seal
井口动密封
6) wellhead seal device
井口密封装置
补充资料：自封
自己给自己加以某种称号：真正的英雄决不是靠自封获得的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条