Liuhe' s Drilling Dynamics Monitor System measures and records weight on bit, torque on bit, internal and external annular pressure, temperature, RPM and triaxial vibration during drilling operations. Captured data can be transmitted wirelessly via MWD system, or stored in the DDM' s downhole memory for later download and analysis. The tool is suitable for deep well monitor, ensure the safety of operation and prevent the accidents.Liuhe' s Drilling Dynamics Monitor System measures and records weight on bit, torque on bit, internal and external annular pressure, temperature, RPM and triaxial vibration during drilling operations. Captured data can be transmitted wirelessly via MWD system, or stored in the DDM' s downhole memory for later download and analysis. The tool is suitable for deep well monitor, ensure the safety of operation and prevent the accidents.