套管接箍 [油气] Casing Coupling ; casing collar ; [油气] casing joint

钻杆接箍 drill rod connecting hoop ; [油气] drill pipe coupling ; drill rod coupling

油管接箍 [油气] tubing coupling ; tubing collar ; tubing joint

套管接箍定位器 casing collar locator ; CCL

异径接箍 reducing coupling ; [油气] adapter coupling ; combination collar

抽油杆接箍 [油气] sucker-rod coupling ; sucker rod joint ; rod collar

无接箍油管 [油气] integral joint tubing

变径接箍 sub-coupling

接箍定位器 [油气] collar locator