casinghead gas套管头天然气;[油气] 油井气;油田气
casinghead spool套管头四通
casinghead pressure套管头压力
casinghead top套管头顶
casinghead tank[油气] 套管头储罐
casinghead price井口价
casinghead ool套管头四通
casinghead squeeze套管头挤水泥
casinghead pre ure套管头压力