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Permalink Reply by Les Bamburg on February 28, 2012 at 4:06

HY, the following is one example of percentage of EUR produced each year.

 

Year 1 - 28.4%
Year 2 - 10.2%
Year 3 - 7.1%
Year 4 - 5.5%
Year 5 - 4.6%
Year 6 - 4.0%
Year 7 - 3.6%
Year 8 - 3.2%
Year 9 - 2.9%
Year 10 - 2.7%
Year 11 - 2.5%
Year 12 - 2.4%
Year 13 - 2.2%
Year 14 - 2.1%
Year 15 - 1.9%
Year 16 - 1.8%
Year 17 - 1.7%
Year 18 - 1.6%
Year 19 - 1.5%
Year 20 - 1.4%
Year 21 - 1.3%
Year 22 - 1.2%
Year 23 - 1.1%
Year 24 - 1.0%
Year 25 - 1.0%
Year 26 - 0.9%
Year 27 - 0.8%
Year 28 - 0.8%
Year 29 - 0.7%

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Permalink Reply by Hale Yayuh on February 28, 2012 at 4:55

Les, what formation is that for? Is that Haynesville? Did you generate that from a decline curve software? Thanks.

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Permalink Reply by Les Bamburg on February 28, 2012 at 7:34

HY, that would be for a generic Haynesville Shale well and the information is from one of my own type curves.  

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Permalink Reply by Hopeful About Natural Gas on February 28, 2012 at 9:47

Thanks Les, that's a good, clear list of decline rate by years.  I copied it to send to relatives.

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One question: what is the choke for this?  Full open or choked back to last longer?

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Permalink Reply by Les Bamburg on February 28, 2012 at 17:46

HANG, all Haynesville Shale wells are produced initially thru a choke.  It is only a question of initial choke size that varies.  This production profile would be more representative of a traditional approach with an initial choke size of ~ 22/64".  The choke size would be gradually increased over time as the well flowing rate and pressure decline. 

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Permalink Reply by Hopeful About Natural Gas on February 28, 2012 at 19:03

Got it - thanks. I know some companies were cutting back to try and extend the life and EUR.  It's a heckva decline, but it also dribbles on for a long time.

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thanks again for the breakdown in clear numbers. I just don't "see" graphics the way other people do and this is much clear for me to understand - odd since graphs are easier for most people to grasp information from.

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