Enhanced dynamic well model for reservoir pressure determination
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United States of America Patent
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Dec 1, 2015
Grant Date -
Nov 29, 2012
app pub date -
Nov 15, 2010
filing date -
Nov 17, 2009
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Abstract
A computer implemented method for determining reservoir pressure in a shut-in well, the method comprising: determining the initial physical characteristics of the well; determining properties of gas bubble throughout the well; calculating a dynamic mass transfer rate for the gas bubble over a period of time; calculating the physical fluid movement along the well: calculating a rate of fluid influx from the reservoir; determining a corrected pressure gradient along at least part, or all, of the profile of the well using the determined dynamic mass transfer rate, fluid movement and rate of fluid influx; and determining the reservoir pressure from a measure, or determination, of the well head pressure and the calculated pressure.
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