Don - OK, let's try one more time. You can cherry pick gasoline yields if you like to support your position. I can do likewise and make your position look like do-do. LOL. But neither approach changes the FACT:
"
Light, sweet crudes have a higher proportion of the light molecules used to make premium fuels like gasoline, naphtha, and – to some extent – diesel. Heavy crudes have a higher proportion of molecules that can only be used to make diesel fuel or residual fuels oils that are sold at a discount to ships or power producers."
That's from this "primer" on the refinery industrty:
http://canaryusa.com/crude-oil-refinery-primer/But as explained many times:
the US refinery industry does not process heavy conventional oil, light condensate oil or even 39° API WTI. It refines blended oils whose gravity has been rather constant at 32° API for many decades. Neither the heavy oil nor WTI can be refined to deliver the gasoline yields the refineries INSIST on producing.
Both such "conventional oils" (as you classify them) MUST BE BLENDED with the "lite-tite oils (again as you classify them). So let's look at the makeup of US oils. Again from the EIA:
"API gravity: In 2016, the majority (51%) of the 8.4 million bopd of crude oil produced in the Lower 48 states was light oil, or less dense oil with an API gravity of 40.1 or above. Light oil also made up more than half of the oil produced in 2015."
"State-level data show the difference in crude oil API gravity in different parts of the country. For example, oil produced in Texas has a relatively broad distribution of API gravities, with most production ranging from 30–50 degrees API. Oil produced in North Dakota tends to be light (less dense). About 90% of North Dakota’s oil production has an API gravity of 40.1–50.0 degrees. California’s oil is mostly heavy (more dense), and more than 90% has an API gravity of less than 30 degrees."
Got that:
neither the light Texas/ND oils nor the abundant heavy "conventional oils" from CA provide the product yields the refineries INSIST UPON. Which is why before the boom in light oil production from the shales our refineries were FORCED TO IMPORT LIGHT OIL to blend with our "conventional oil".
From the EIA: Prior to the "lite oil" boom from the shales about 9% of the oil imported by our refineries was 40°+ API. Now, again
thanks to the shales, the import of those NECESSARY lite oils HAS DECLINED 70%:https://www.eia.gov/dnav/pet/hist/LeafH ... 000452&f=AIOW the refineries are processing the same blended oils today as they have been for decades. The only difference is that the most lite oil component is being produced domestically instead of being imported.
So the bottom line:
US gasoline yields have not changed because the US is producing more of the lite oil needed to blend with the heavier "conventional oils" since the composition of the blended oil the refineries HAVE PROCESSED FOR DECADES HAS NOT CHANGED. And how do we know the gasoline yield hasn't changed as a result of the increase in US "lite-tite oil" (again, as you classify it)? Because our friends at the EIA keep track US refinery gasoline yields.
US REFINERY GASOLINE YIELDS THAT HAVE HELD UNIFORMLY AROUND 45% FOR AT LEAST THE LAST 25 YEARS. https://www.eia.gov/dnav/pet/hist/LeafH ... FRYUS3&f=MDon, these are the FACTS as presented from an independent source, the EIA. Either you understand now or you don't. If folks want to continue to try to educate you that's their choice. For me, I resign. LOL.