Basically, the topic of risks, especially the remaining risks in projects, is very important because not paying attention to them will cause a lot of losses, including financial and time, so a smart organization should be able to make the necessary predictions in advance and be able to face new problems. and show flexibility outside the program and turn them into opportunities. In risks, there is a kind of uncertainty and ignorance about doing work in the future, which shows that risks act like a double-edged knife. In this project, first thirty important remaining risks in an oil construction project were identified with the help of experts' opinions and according to previous similar projects in five sections, and then weighting was done with the help of fuzzy methods and risk matrix. and prioritized. The results of the study show that the organization should eliminate the similar risks with a high degree of importance and turn them into opportunities in order to reduce their effects with proper planning. It should be mentioned that these risks were ranked according to 28 increasing or decreasing criteria of 5 mechanical, electrical, civil, Instrument and financial sectors. It is necessary to explain that the risks along with their results were investigated in the 2023 version of the software and the final results confirm the final data of the two methods.