A.泥巖 B.漏失 C.灰?guī)r D.砂巖
A.操作經(jīng)驗 B.鉆桿扭轉(zhuǎn)系數(shù) C.套管扭轉(zhuǎn)系數(shù) D.下反接頭絲扣數(shù)
A.襯管 B.篩管 C.尾管 D.油管