Those are only small factors
The international market in oil is partly speculative but mostly is a demand-driven price economy for a material with poor supply growth potential - it can take 5-10 years to find new oil and bring it into production.
Unless you're proposing an internal subsidy on oil price, like command economies have, then you can't beat the fact that the Chinese and Indians are prepared to pay more for oil and have almost insatiable demand growth.
A long-term stable oil price is in everyone's best interest, but it won't happen. If the World wasn't prepared to underwrite the price when it was unsustainably low (e.g. 10 years ago), then it must pay the price of supply constraints as the cycle turns...