Water cut rate of change analytic method

摘要

A method of measuring a water effect on an underground non-water well includes the steps of assembling a history of water cut (WC) measurements for the well over an extended period of time, determining a water cut rate of change (R) for the well based upon the history of water cut measurements, wherein the water cut rate of change is defined as follows: $\frac{d\left(\mathrm{WC}\right)}{d\left(t\right)}=R,$ and identifying whether an anomaly exists based on the determined R.