Under carbon neutral policy,world oil production including US shale oil does not increase. Therefore, crude oil prices and natural gas prices are the highest in 2022. COP26 decided carbon net zero by 2050. However,the divestment of new oil and gas development is not realistic. The role of oil development companies is very important. The oil and gas development companies are required to continue the necessary investment of new oil development with the reduction of carbon dioxide emission and to become non-carbon energy companies in 2050.