is less than both XOM and CVX. XOM's recent investment in Russia may be troubled if sanctions continue . COP made a concerted effort to move away from troubled areas around the world . Besides investing in North Dakota oil , they are also exploring the drilling of older retired wells with modern drilling methods , namely fracking in the hope that these old wells can again be productive money makers or increase reserves.. Go to their website for a break down of reserves around the world. The US and Canada make up the majority of COP's reserves . Theoretically , if and when some geopolitical event occurs where oil supply becomes an issue , COP should benefit the the most of the three companies . But remember , COP , being a pure production play , is also the most sensitive to the price of oil , since integrateds can offset lower oil prices with refinery profits when oil prices drop and therefore maintain more stable revenues and earnings in environments of wild price swings .