Last week, the company went ahead and pulled the plug on one of the three.
In a statement last Thursday, Shell officials announced they were abandoning plans for the gas-to-liquids plant south of Baton Rouge, La., mainly due to increasing costs.
The Wall Street Journal reported Shell estimated in September it would spend $12.5 billion to build the plant, which would convert natural gas to diesel and other fuels.
However, in just three months, the project's cost skyrocketed more than 60 percent, from $12.5 billion in September, to $20 billion this month.
The Journal said the large number of energy infrastructure projects -- including new plants, port expansions and pipelines -- are driving up the cost of labor and raw materials in the Gulf Coast region.
Also, some moderate increases in the price of natural gas combined with increasing supplies of crude oil (which are expected to drive down prices in the future) are not good for a project that relies on a wide spread between natural gas and crude prices in order to turn a profit.
While Shell is still officially evaluating whether it will continue to move forward with the Pennsylvania cracker plant, scratching another more capital-intensive project off of its to-do list does up the chances for the Appalachian facility.
However, Voser on Thursday cautioned officials are still closely examining all future plans in order to preserve profits at the company.
"We are making tough choices here, focusing our efforts and capital on the most attractive opportunities in our worldwide portfolio to add value for shareholders," he said.