Coalbed Methane Question

[srik]

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...

[vinomarky]

You already asked this, and I already answered it;

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