Firstly, the paper pointed out that oil and gas exploitation enterprise do not satisfy the conditions of traditional profit-loss equilibrium analysis, and then defined profit-loss equilibrium analysis of oil and gas exploitation enterprise, gave the analytical methods.

Research advances of chemicals for oil production;

Technical analysis of new tubing heating oil production system.;

Temperature limit for oil-gas-water mixed transportation in safety during oil production with special high water-cut;

Wetting heat,adhesion work and adsorption enthalpy increment in oil recovery;

Extended reach well completion and oil recovery process;

It has proved in practice that the productivity of linear motor-driven oil recovery equipment has improved greatly than conventional ones.

Microbial oil producing was a technique of production increasing by the activity of microbe and its metabolic products.

Electric submersible pump is a large- scale oil producing equipment, and is a main increase productivity way in mid-later period of oilfield development.

The supereicial points of view of the type of production platform used for offshore margin oil field of China;

Application of Coiled Tubing in Production Practice;

Offshore production platforms in Bohai Gulf experience ice loading for more than three months each year.

The applicability range of ultrasonic wave technology in oil extraction is discussed.