The paper tightly encloses each stage of beach oilfield development, analyzing its input-output circumstance, setting up appropriate economic models of analysis and evaluation: at .

Deploying new producing is 450×104t/a in structure1of some beach oilfield, three artificial end islands (No.

Based on requirements of actual conditions,human factors engineering and safety reliability about field work of beach oilfield,a new BOP was designed with mechanical and hydraulic parallel locking and slip enclasping the ram to one body,which had a small height dimension and was used for workover operation in beach oilfield.

this article first introduces the situation of oil-gas gathering and transportation in offshore oilfield ,and then considering the geography location and reservoir character, discusses in detail oil-gas mixing and transportation in order to bring a new design idea for the offshore oilfield development.

A tentative proposal for controlling the sediment transport was presented to reduce the cost and maintain the open exploitation of shallow water oil field, and the model test was made to verify the proposal.

Therefore, the environment protection designs according with the correlative laws and design principles became an indispensable step in the offshore oil field development.

Through summing up experience, Liaohe tidal zone oilfield has developed large caliber, self fill-up floating shoe, which simplifies implementing process, improves work efficiency, and saves cost.

During the development and construction of Liaohe tidal zone oilfield, system engineering of road-bridge-island-harbor is adopted, thus reducing environment pollution and damage to the low.