Coal Bed Methane Reservoir Engineering Book

**span** · 09-29-2009, 01:40 AM

Hi,
Does anyone have this book on Coal Bed Methane reservoir? I require this urgently.

A Guide to Coalbed Methane Reservoir Engineering, Saulsberry, J.L., Schafer, P.S., and Schraufnagel, R.A. (Editors), Gas Research Institute Report GRI-94/0397, Chicago, Illinois (March 1996).

Thanks
span

**kwy1970** · 09-29-2009, 06:56 AM

me too. thanks advance.

**moscow01** · 11-09-2009, 08:08 AM

I think this is what you are looking for guys?

[link Point to another website Only the registered members can access]
I could use some info on CBM completions. Specifically, case histories on stimulation. Before and after fracing rates, before and after cavitation rates. I also need well info like perm and depth etc. Anything appreciated. Anybody got any info on fishbone aka MRC (maximise reservoir contact) wells in relation to CBM. Again, I need case histories.

Thx

**ndt1235** · 12-09-2009, 11:12 AM

I would like how to determine the saturation of methan on cbm.
Because when i use archie to calculate it. The supervisor didn't agree.
Help me to solve it!

**zeliustitan** · 01-22-2010, 12:52 PM

Anyone has A Guide to Determining Coalbed Gas Content from GRI as well?

**vinomarky** · 01-23-2010, 12:55 AM

Archie approach is not valid for CBM, the reason being that typically the vast majority of gas content in coal is in fact adsorbed onto the coal surfaces and not free in the coal porosity. You need to characterize the adsoption isothems from desorption tests to be able to characterise in situ gas content

**zeliustitan** · 01-23-2010, 06:19 AM

vinomarky, i have 5 methods on how to determine the gas content for different parameters and one of them is the one you mentioned..

the reason why i requested that book it because i want to know more of the approaches and the procedures in order to validate the gas content estimation..

hope those out there who are expert in CBM could help..

**vinomarky** · 01-23-2010, 08:34 AM

Was replying to the question regarding application of Archie - seems like he doesn't even know the basics, so the answer I gave was correspondingly basic.

**Pablocien** · 01-23-2010, 11:22 PM

The books that you seek are already in this forum

Look for them properly

**Pablocien** · 01-23-2010, 11:29 PM

[link Point to another website Only the registered members can access]

**zeliustitan** · 01-24-2010, 05:25 AM

Originally Posted by Pablocien

The books that you seek are already in this forum

Look for them properly

Pablocien, thank you so much for your assistance.. i appreciate it.. thank you

**srik** · 03-19-2010, 04:52 PM

Hi,

I hv very limited knowledge on CBM operation and Iam wondering if anybody could briefly let me know
when producing CBM well we try to set the flowing pressure (pwf) so small to created high pressure difference from the reservoir. lets say the reservoir pressure is 1200 psia and pwf will be 100 psia. my question is : after time the reservoir pressure will reduce, what about the pwf? obviously it will decrease also. but lets say the wellhead pressure is 50 psia then the pwf can not decrease that much to let the gas keep flowing.
it's hard for me to imagine that. can anybody share their operational experience....

I would really appreciate your kind response...