短語詞組短語dual string tubing hanger 雙管懸掛器nonorienting tubing hanger 非定向油管懸掛器tubing hanger mandrel 油管懸掛器芯軸Tubing hanger perforating 油管懸掛射孔coiled tubing hanger 擾性油管懸掛器tubing hanger neck seal 油管懸掛器密封圈tubing hanger alignment slot 油管掛定位槽dual completion tubing hanger 雙油管懸掛器 返回 tubing hanger