Abstract:Compared with onshore oilfields, the offshore oilfields are more difficult to develope, and cost much more money to maintain the equipments, thus, the offshore oilfields are demanded to gain more economic benefits and get high recovery with less time. In this paper, exploration modes and the matching technology of the tertiary oil recovery have been studied, a new offshore oil exploitation mode which will shorten the span of primary recovery and blur the limit of secondary and tertiary oil recovery have been put forward. The property of polymers which are suitable to the offshore oilfields has been analyzed. It will provide some references for increasing the benefits of the offshore oilfields.