ALBALD1
Silver Member
Wonder if anyone knows what countries the different gasoline makers get their oil from? Is it all mixed up or is it possible to just buy gas from companies that use american oil?
oil/gas ?
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SkyPup
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It is possible, but not probable, depending on which Petroleum Defense District you live in.
Here's a good place to start to make up your shopping mind:
EIA - Petroleum ImportsExports & Movements - Data & Analysis
Here's a good place to start to make up your shopping mind:
EIA - Petroleum ImportsExports & Movements - Data & Analysis
cowpie1
Silver Member
It is a mixed bag. When I use tank fuel from terminals to stations, it all came out of the same line no matter which station brand it was going to. Texaco, Citgo, Shell, etc all got the same fuel. I just programmed in who it was going to and various additives per the brand requirements were added in the line to the tanker.
The refineries are more specific on which oil they are processing, but after it goes thru the lines to various terminals, it is a mix.
Even biodiesel and ethanol may be imported! Most is of U.S. stocks, but other countries are getting in on the act and getting some of their bio and ethanol into the U.S.
The refineries are more specific on which oil they are processing, but after it goes thru the lines to various terminals, it is a mix.
Even biodiesel and ethanol may be imported! Most is of U.S. stocks, but other countries are getting in on the act and getting some of their bio and ethanol into the U.S.
RalphVa
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Before I retired, I worked in the lubricating oil/wax manufacture in Baton Rouge, LA. Was also privy to what was going on in our sister refinery in Baytown, TX. These are both about 1/2 million barrel/day refineries. The Baytown lube complex is the largest in the world. The Baton Rouge one was about 2nd or 3rd place but had the largest wax manufacturing in the US. Wax is removed as a by-product of lube oil processing; otherwise, you'd NEVER be able to shut down your engines at all, as the oil would solidify.
Baton Rouge ran some local Louisianan crude, and Baytown ran some local Texas crudes. However, these local crudes were mixed in with various Mexican, Arabian/middle East, sometimes Canadian and South American crude the buyers/sellers of our crude got for us. We knew about what the mixes were, because we had to adjust our refinery operating conditions to ones best needed to process each crude mix. One local Louisiana crude that was segregated was from off shore wells. It was a naphthenic crude that is greatly differently from the paraffinic ones from the other sources. It is not good for making high quality lubricating oil but is used for specialty products.
Ralph
Baton Rouge ran some local Louisianan crude, and Baytown ran some local Texas crudes. However, these local crudes were mixed in with various Mexican, Arabian/middle East, sometimes Canadian and South American crude the buyers/sellers of our crude got for us. We knew about what the mixes were, because we had to adjust our refinery operating conditions to ones best needed to process each crude mix. One local Louisiana crude that was segregated was from off shore wells. It was a naphthenic crude that is greatly differently from the paraffinic ones from the other sources. It is not good for making high quality lubricating oil but is used for specialty products.
Ralph
RalphVa
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Yeah, there are very asphaltic crudes. Some of these are in Canada and Venezuela. In general terms, the crudes from China and India are very sweet but have lots of wax in them. Offshore Gulf Oil is very or almost totally naphthenic (means it's almost wax-free and products from it have very low natural pour points but are very low in viscosity index). Oil in US varies from sweet to a little sulfurish. Oil could be made from Pennsylvania crudes by just distilling it. The crude have very few aromatic molecules. It mainly needed some wax removal to make it fully useful in the engines of old. Persian Gulf crude oil has a lot of sulfur but is good for lubricating oil if the aromatic molecules are either removed or reacted to paraffins; they all have some wax that requires removal, too. The Persian Gulf crudes generally have all types of molecules except much naphthenics.
For those who don't know: paraffinics are straight chain molecules, very desirable and what synthetic oils are made up of entirely, except for some strategic side chains that keep them from becoming solid like wax; naphthenics are ringed molecules but without significant number of double bonds; aromatics are ringed molecules loaded with double bonds (like multiple benzenes). Those double bonds in aromatics are VERY undesirable in lubricating oils. They are reaction sites that can either break apart or take on other molecules and cause heavying up to occur.
Asphalt, of course, is a very nasty molecule, absolutely loaded with reaction sites and other bad things, in addition to being just plain too gooky. It's pavement material.
Ralph
For those who don't know: paraffinics are straight chain molecules, very desirable and what synthetic oils are made up of entirely, except for some strategic side chains that keep them from becoming solid like wax; naphthenics are ringed molecules but without significant number of double bonds; aromatics are ringed molecules loaded with double bonds (like multiple benzenes). Those double bonds in aromatics are VERY undesirable in lubricating oils. They are reaction sites that can either break apart or take on other molecules and cause heavying up to occur.
Asphalt, of course, is a very nasty molecule, absolutely loaded with reaction sites and other bad things, in addition to being just plain too gooky. It's pavement material.
Ralph
