A.只定向(Directional Only)B.地層評(píng)價(jià)(Formation Evaluation)C.油井跟蹤(Oiltrack)D.旋轉(zhuǎn)導(dǎo)向(Autotrack)
A.井深B.震動(dòng)C.長度D.鉆壓
A.40sB.30sC.20sD.12s