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Material balance

Well Test Analysis, Pressure and Production Monitoring........ etc.

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Material balance

Postby chindrella » Sun May 19, 2013 11:59 pm

WHY MATERIAL BALANCE IS NOT APPLICABLE TO TIGHT RESERVOIR
IF THE ABOVE IS TRUE. WHAT SHOULD BE MINIMUM CRITERIA TO APPLY MATERIAL BALANCE OVER OIL RESERVOIR.
THANKS IN ADVANCE
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Postby FANARCO » Tue May 21, 2013 8:12 am

The Material Balance is a Pressure-volume relationship in simple words.

So it assume the tank pressure is constant and homogeneous.

In tight reservoirs it is very hard to calculate the average reservoir pressure is not constant for allover the reservoir all the time.

For that, the results of Material Balance in tight reservoirs is not reliable.

In order to apply Material Balance you should have enough pressure data for the field history.

Thank you
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Postby chindrella » Sun Jun 09, 2013 7:47 pm

thanks fanarco for your reply.after how much production history (recovery ) we can apply material balance
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Postby FANARCO » Mon Jun 10, 2013 8:58 am

After enough pressure/production data. i.e. at least three pressure points with reasonable production.
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