美国液升 (Ｈｙｄｒａｌｉｆｔ)公司研制了一台液升钻机 ,采用液缸升降 ,可在海上钻井船上进行勘探、完井、修井和下入管子、钢丝绳等作业。这台 750 / 3 6型液升钻机使用 6条接在补偿液缸上的起升钢丝绳取得补偿 ,钻杆立根和大量套管立根均排放在钻台上可调的指梁上 ,需要时可 Hydralift has developed a hydraulic lift rig that uses a hydraulic cylinder lift to drill, drill, workover and submerge pipes and wire ropes on offshore drilling vessels. The 750/3 6 Lifting Drill was compensated by six hoisting ropes attached to the compensating cylinder. The drill pipe stand and a large number of casing risers were drained on the adjustable finger rail of the rig floor.