Research on the safe distance between passing ship and offshore drilling platform based on theory and statistics

The offshore drilling platform is the main equipment for oil and gas exploration. The increase in offshore drilling platform results in the apparently increased contradiction between oilfield exploitation and safe navigation of ships. In order to ensure safe navigation and the normal exploitation of oil and gas fields in a limited space, it is necessary to quantify the distance between ships and coastal drilling platforms. In this investigation, the relevant theoretical calculation models were developed, including a drift model for ship out of control and a ship emergency stopping model. By selecting appropriate ship samples, theoretical safe distances under different models can be obtained. With the use of statistical correlation theory based on the Automatic Identification System data of ship, the safe distance between passing ship and platform was further studied. Finally, the recommended safe distance in different waters was summarized by comparing different model calculation results and data statistics results. Research results are beneficial for the safety of ship navigation, safe operation of the platform, and the revision of relevant standards.