It is perfectly normal for a company to borrow money. Otherwise, the poor banks and credit unions would not be making much money. As I see it, it is normal to borrow money when you're in business.
Based on what I understood the Shell official to have said, we are talking almost exclusively about borrowed money. I believe Shell also borrows money. I can guarantee you that in New Brunswick, the Irving company, which is worth billions, also borrows money.
In any case, that is not a concern for you, since you are able to secure the money.