You can't. It will eventually used up. The only thing that you can do is to minimize the use by using more efficient engine or eventually switch to non-fossil fuel. But until now, there is no exact estimate of petroleum reserve in the world. We do have an engineering aproach on figuring out the size of a known field, but the ultimate result is always changing because new technology keeps emerging. Whether it is methods on extracting hydrocarbon out of the earth, analysing the reservoir, and even discovering new fields.
opo
by using cycles in 21 st century
Ethanol
There isn't much left and it takes a long time to restore.
We should conserve petroleum because of the following reasons :- 1) Its non renewable 2) For the future generation to use 3) So that it does not get exausted 4) Its in a limited stock and can be exausted by human activities * Therefore there is a need to conserve petroleum Some examples are : 1] Petrol 2] Diesel 3] Coal
instead of using personal vehicle use publi cransport for long distance
conserve petroleum resouces through application of on condition oil change policy
We can help conserving fossil fuels by reducing our usage of electricity. Since electricity comes from the burning of fossil fuels, the demand to burn fossil fuels for energy will be reduced. Cutting down the usage of vdehicles and converting to other forms of public transport can also help conserve petroleum.
by using public transportation
because some animals when they die they're bones are getting moldy or hard then it turns into coal and petroleum so you can refine the petroleum
Getting It out of the ground Drilling for it
Getting It out of the ground Drilling for it