Brief talk about development of marginal oilfield in the western South China Sea;

Approach to key points in exploration and development of offshore marginal oilfields;

Application of horizontal well technology in the development of marginal oilfield in Bohai Bay;

Status quo,challenges and future strategies of development technology for marginal oil fields in China;

The marginal oil fields in 100m to 300m water depth of China offshore are highly worth exploiting.

With the novel "THREE ONE MODE" and "BEE MODE" developed,many marginal oil fields can be developed economically in Bohai Bay.

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

Study on polymer for chemical flooding in offshore oilfield of China;

A study on accelerating the solubility of hydrophobically associate polymer for offshore oilfield;

Control technology for bottom water coning in horizontal well of offshore oilfield;

Water control technique of enhanced oil recovery for offshore oil field;

For offshore oil fields with large power and heating loads, but lack of associated gas, the solution of power and heating co - generation will improve the overall energy efficiency and cut down operating costs, thus improving the rate of return and lowering the barrel oil cost.

The paper introduces the engineering practice of terminal treament plant of Wei Zhou offshore oil field are including the external water supply pipeline, the design, construction and commissioning of the buried cathodic protection systems.