Patent ID: 9008971
Filing Date: 2015-04-14
Classification: E21B

Abstract:
1. A method for profiling a hydraulic head in a geologic media around a borehole, comprising the steps of: obtaining a transmissivity profile of the geologic media by: determining a first borehole pressure head in a first open hole volume between the eversion point and a bottom of the borehole, the first borehole pressure head approximately equaling a formation pressure head in the media subtending a first borehole interval; moving a liner inversion point up the borehole to uncover successively a second borehole interval; determining a second borehole pressure head in a second open hole volume between the inversion point and the bottom of the borehole; and calculating a formation pressure head in the media subtending the second borehole interval using the formula wherein FH 2 is the formation pressure head in the media subtending the second borehole interval, T 1 is the transmissivity of the media subtending the first borehole interval, BH 2 is the borehole pressure head in the open hole volume between the inversion point of the second borehole interval and the bottom of the borehole, FH 1 is the formation pressure head in the media subtending the first borehole interval, and T 2 is the transmissivity of the media subtending the second borehole interval.