To mitigate carbon emissions from offshore oil and gas fields, operators are actively promoting joint development of offshore wind power and offshore oil and gas fields. The existing scheduling strategies, designed for stable relationship between sources and loads, are difficult to cope with the wind power uncertainty. To reduce the operation costs and improve the absorption ability of wind power, a day-ahead scheduling strategy for integrated energy system (OIES) of offshore oil and gas field is proposed, which coordinates turbine generators and offshore wind power. Firstly, a typical OIES structure that integrates multiple platforms with offshore wind power is presented. Then, a suppressing strategy of wind power fluctuationan with equivalent load rate and a promotion strategy of wind power consumption level with dynamic management governing the minimum load rate for turbine generators are proposed. Finally, an optimal robust day-ahead scheduling model is established, considering the coupling constraints of power, gas and oil systems, the operation constraints of turbine generators, and wind power uncertainty. Based on a case study of an offshore oil and gas field in Northern China, the results show that the proposed strategy can effectively reduce total operation cost and curtailment rate.