Pressure Build Up Test
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Transcript of Pressure Build Up Test
PRESSURE BUILD UP TEST
PRESENTED BY:PRAJWAL 14MPE25BIRJU 14MPE04
INTRODUCTION
• PRESSURE BUILD UP TEST• INTERPRETATION METHODS1. TYPE CURVE ANALYSIS2. HORNER’S PLOT3. MDH METHOD
TESTING PROCEDURE• PRESSURE RECORDER IS
LOWERED TO THE BOTTOM OF FLOWING WELL
• THE WELL IS CLOSED FOR BUILD UP DURATION(24-96 Hrs.) WITH THE INSTRUEMENT INSIDE THE WELL
• THE RECORDER IS PULLED OUT FROM THE WELL AFTER BUILD UP AND THE RECORDING DATA IS ANALYZED
USES OF BUILD UP TEST ANALYSIS
• TO GET RESOVOIR PRESSURE• TO FIND RESOVOIR PERMEABILTY• TO OBTAIN SKIN FACTOR
TYPE CURVE ANALYSIS
Horner’s Plot
During the infinite acting time period, after wellbore storage effects have diminished So, pD is replaced by logarithmic to exponential integral.
So the equation will be,
Above equation describes a straight line with intercept pi and slope –m.
This is an accurate estimate only for short production periods.
Condition :
Miller-Dyes-Hutchinson(MDH) Analysis