But there are some clear logical biases in the article you cite, Jim.
In other words, you don't agree with it...
First is that jet fuel prices can be controlled via hedges; they cannot, as you well know because there are virtually no hedges on jet fuel even though there are on a number of other petroleum products. Thus, the idea that DL could just improve its hedges is not realistic.
While jet fuel isn't hedged directly (although there is a small market for jet fuel futures/options developing), everybody that pays any attention to hedging knows how the process works but maybe you don't. Petroleum products whose price changes have a high correlation to the changes in price of jet fuel are used as proxies for jet fuel. Then profits/loses on those hedges are applied to the price paid for jet fuel and that gives a net post-hedge jet fuel price. Make money on the hedges and lower the effective price of jet fuel, lose money on the hedges and increase the effective price of jet fuel. The concept is pretty easy to grasp although in the real world it's impossible to be 100% successful since the cost of the raw commodity - crude - or the desired finished product - jet fuel - is not affected by only supply and demand.
A refinery also entails price risk so it's no different from hedging fuel in that respect. Especially with a one refinery operation such as DL is supposedly considering, the risk of fluctuating crude prices, the changing cost of getting the crude to the refinery and the changing market prices for the refined products is merely replacing the risk of hedging against fuel price fluctuations, not eliminating the risk.
Second is that DL's hedging program right now is not successful. <snip> but DL has had a fuel price advantage due to its hedging program.
If success is measured by effectively paying a lower price for fuel, no hedging program is 100% successful. Hedging is like gambling in one respect - be right more than wrong and you make money (and reduce the effective cost of fuel).
Third is the assumption that products other than jet fuel are unwanted.... DL's intent is clearly to control its jet fuel prices, but who is to say that there isn't money to be made in other petroleum products?
That's not my assumption. Certainly DL uses petroleum products other than jet fuel - gas or diesel for ground equipment, lubricants, etc - but far less of those other products than a refinery would produce. Plus, some of those other products require further steps to produce and thus would have to be purchased anyway. Since most of the output of a refinery is not jet fuel, the other products would of course go on the market. In fact, we've both agreed that even the jet fuel produced would at least mostly go into the world market.
Fourth is that C-P mothballed the refinery because it couldn't make money.... in fact, the refinery is due for the equivalent of an overhaul. Oil companies like airlines don't necessarily perform the heavy maintenance if they can't find justification for keeping the refinery operating, just as airlines schedule their overhauls based on the necessity of each particular aircraft.
If Trainer was so profitable it would have the required maintenance done. The fact that Conoco/Phillips doesn't think it's worth the investment speaks volumes, as does the fact that they've been unable to sell it to anyone else, like refinery operators or integrated petroleum companies. Using your airline and aircraft heavy maintenance example, carriers routinely incur the cost to overhaul planes that produce a return but often don't if the plane has outlived it's financial usefulness due to age, inefficiency, whatever. Just like those planes that AA parked in storage. So again, the fact that Conoco/Phillips doesn't consider Trainer a candidate for "overhaul" speaks volumes...
I don't know whether this makes sense for DL or not - but I do give them credit for considering a solution to spiraling fuel prices that is clearly out of the box based on the industry.
Nothing wrong with looking at it, but if DL thinks that owning a refinery will immunize it from fuel price fluctuations (as you seem to believe) they're making a big miscalculation.
Jim