Several Chinese oil companies are listed on the U.S. stock market

their petroleum reserve disclosure by SEC proposed rules is indispensable

and the proved reserves is the most concerned.We face great challenges for SEC reserves disclosure because of crude price changing

operation costs rising and other factors

it is necessary to determine the impacts of oil price and operation costs on proved reserves reporting.Taking the A oilfield in China as an example

we obtained various combinations of oil price and operation costs by increasing price and cost at a rate of 10%.Based on calculation with ORGE software

we analyzed the impacts of changes of oil price and the cost on proved reserves reporting.The results show that proved reserves might increase as oil prices rise

but the increasing rate tends to decline gradually.The proved reserves might reduce as operating costs increase

but the decreasing rate also tends to decline progressively.The impacts of oil price and cost on proved reserves is nonlinear

and can be divided into three stages

including dramatic impact

moderate impact and weak impact stages.