Well drainage! Help !

[vinomarky]

I have a bit of an issue with the concept of 'drainage radius' - as already outlined in post 3 at;

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

[jikzo]

In this equation :
N = A*h*NTG*por*(1-Swi)/Bo


h : is the thickness of the pay zone ??
and what if I dont have the NTG ?
and this calculates the A for each reservoir right ? so if the well is drilled through 3 reservoirs .. am supposed to calculate each one independently ??

[ahmedm]

h is gross thickness multiply by NTG to get the netgross thickness

A drainage area of the well, for instance, since we bet the N for the well only

i belive you was asking about the well not the reservoir!

it is an assumption to solve for drainage area so from the volume we get the area V = A*h

for porous materials, V = A*h*por*So as pore volume

i hope it is clear, i belive if you read some spe papers it can help

i have some that would really better explain

i will uplaod them to 4 shared, i will share the link

if you dont mind remind me by a post to my forum mail




good luck

[ahmedm]

as promised, please check those papers

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

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

[jikzo]

as promised, please check those papers

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

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

Oh thanks alot !
i'll check them now ..=)

[jikzo]

as promised, please check those papers

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

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

Oh thanks alot !
i'll check them now ..=)