... well drilling300 crawler hydraulic well drilling is a light, efficient, multi-purpose crawler rigs, which are mainly used in the drilling of ... stability and bending strength.4, sophisticated hydraulic system, stable performance, assemble control panel, convenient ... pump, mud pump and other equipmentTechnical parameterTermsUnitValueDrilling rig diametermm101~254Drilling well depthm315Wind pressureMPa1 ...