Enhanced dynamic well model for reservoir pressure determination

摘要

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.

主权项

1. A computer implemented method for determining a reservoir pressure in a shut-in well, the method comprising:
determining initial physical characteristics of the well; determining properties of a gas bubble throughout the well; calculating a dynamic mass transfer rate for the gas bubble over a period of time; calculating physical fluid movement along the well; calculating a rate of fluid influx from the reservoir; determining a pressure gradient along at least part, or all, of the profile of the well using the dynamic mass transfer rate, physical fluid movement, and rate of fluid influx; and determining the reservoir pressure from a measure, or determination, of the well head pressure and the pressure gradient.