ZJ70D drilling rig: 1)Drilling depth,7000m, 2)Hook load, 4500kN, 3)Drawwork power ... It can satisfy the requirement for explosion-proof, safety, drilling engineering and equipment installation, dismantling and easy maintenance requirements. ... /2250LDBZJ40/2250DBZJ40/2250DZZJ50/3150JZJ50/3150LDBZJ50/3150DB ZJ50/3150DZZJ70/4500LDBZJ70/4500DBNominal Drilling Depth(114mm DP) ft (m)6600 (2000)9900 ...