OK, starting to get a handle on the potential impact of the increasing demand fore ethane. So some generic numbers:
GPM: gallons per 1,000 cuft (1 MCF) of NG:
Marcellus Shale: 4-8
Eagle Ford/Bakken: 4-9
Composition of 5 GPM NGL:
Ethane - 65%
Propane - 20%
Normal butane - 10%
Natural gasoline - 5%
So again just a ball park number:
1 MCF of NG = $3.30
5 gallons NGL =
5 gallons NGL = 3.25 gallons ethane = $1.07.
We'll ignore the other NGL's since they have been stripped and sold all along. But much of the ethane had been "rejected"...left in the NG.
Again just some rough estimates: for every bcf (1 million MCF) of MS production yields 3.25 gal X 1 million = 3.25 million gal ethane = $1.07 million.
And 1 bcf NG = $3.30 million ($3.30/MCF)
So for every MCF of MS production sold $3.30 comes the methane and $1.07 comes from the ethane and the rest of the value (about $2.20) comes from the rest of the NGL's. So: $3.30 + $1.07 + $2.20 = $6.57.
Thus about 16% of the value of MS sold is represented by ethane sales IF 100% WERE RECOVERED and sold. Of course that depends on the exact price of the NG and the individual NGL.
From 1985 thru 2011 ethane production stayed fairly constant at 20 million bbls. But since then has increased to 52 million bbls.
https://www.eia.gov/dnav/pet/hist/LeafH ... TSTUS1&f=MBut to know the impact of all this new ethane cracking capacity we need to know how much IS NOT being recovered. Here's a rather convoluted calculation:
https://www.icis.com/resources/news/201 ... rejection/Which concludes that "596,000 bbls/day represents a pretty good approximation of the amount of ethane that was rejected for the month of February." So 596,000 bbls/day = 25 million gallons = $7.5 million/day @ $0.30/gallon = $2.7 BILLION/YR potential sale.
But the cracking is turning ethane into ethylene:
Now have to convert gallons of ethane to #'s: $0.30/gal = $0.10/#. And it takes 1.3# of ethane to make 1# of ethylene.
So it costs about $0.15/# of ethane to make $0.42/# of ethylene. IOW the ethylene has a market value about 3X the value of the ethane.
So if all the rejected ethane is recovered and used to produce ethylene the final value is around $8 BILLION/YR.Which probably explains why companies are spending many $billions for new crackers to convert ethane to ethylene.
I hope all you butt heads appreciate this: geologists are not designed to do this much f*cking math. LOL.