Based on engineering practice, the following questions about the system design of geothermal water source heat pump are disussed: (1)the connection between groundwater and chilling water; (2)deep well water source; (3)constant or variable volume of ground water and chilling water; (4)adjustment pool; (5)assistant heat source.

Analysis of axial load influence on mechanics characteristic of ocean deep water drilling riser;

Achievements on deep water drilling fluid research;

As more and more oil and gas resources are discovered in deepwater worldwide,the deep water drilling has become more and more in recent years.

Effect of buoyancy modules on main performances of deepwater drilling riser;

Mechanical stability analysis of subsea wellhead for deepwater drilling;

Prediction of gas hydrate formation region in the wellbore of deepwater drilling;

The titled LTLD cement slurry is developed for cementing deepwater wells at offshore oil/gas reservoirs and characterized by combinational physical/chemical way of foaming by N_2,that is,double gas filling and the majority of additives used is synthesized specially.