ON THE CORRECTNESS OF INTERPRETING DATA ON DETERMINING THE CAPILLARY PRESSURE IN ROCKS BY THE CENTRIFUGATION METHOD

We have analyzed the common errors made in interpreting centrifugation data with the aim of determining the capillary pressure in rock samples. We propose a method for increasing the reliability of processed data based on the separation of the data set by determining the limiting rotational velocity of the centrifuge corresponding to the attainment of the maximum value of the capillary pressure in the rotating core sample. It has been established that in using the standard centrifugation method it is physically impossible to attain capillary pressures exceeding 1atm. We have improved this method by increasing the initial pressure in the core holder of the centrifuge.
   
Author:  A. M. Svalov
Keywords:  capillary pressure, rocks, centrifugation method
Page:  760