Regarding the functional requirements of platforms aiming at producing marine oil using land drilling,a prefabricated concrete structure designed for oilfield development is proposed based on the standard system of water transport engineering construction and illustrated by the example of an oil field. A comprehensive study on the structure is carried out on the structure design concept,adaptability research of design codes,structure scheme,engineering ship and discard of the platform,which may serve as reference for other similar large offshore platform projects.