Premier Corex: Capillary Pressure Methods, QC & Interpretation

Capillary pressure (Pc) is one of the chief contributors towards determining and understanding reservoir hydrocarbon saturation.
Here our Global Technical Manager Jules Reed takes us through the main laboratory methods used to determine core-based Pc, how to quality control and how to interpret the results. Based on chapter 9 of the book, Core Analysis: A Best Practice Guide, V64 of the Developments in Petroleum Science series.
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[@koksalan75]

Thanks for the video. One question, why do we go up all the way to 60,000psi which is ~11,000m hydrocarbon column despite not having anywhere in the world 11,000m hc column. Whats the reason for that? Thanks

[@premiercorexwebinars]

Thanks for your comment. The measurement goes to such high pressures in an attempt to fill the total porosity and hence, describe the pore throat size distribution in the total porosity. It is not really an attempt to describe the capillary pressure at those naturally unrealistic pressures/heights. This is easily accomplished for clean sandstones and some more permeable carbonates but is not injected in highly clay rich systems and tight reservoirs - particularly “shale gas/oil” systems. Well log data will observe total porosity - including all of the nano-pores (and pico-pores). These can be a significant portion of the porosity in tight reservoir systems and source rocks (up to 50-60 % of total porosity).

[@klnine]

geologists !

[@koksalan75]

@@premiercorexwebinars thanks for the information

[@klnine]

Wettability is controlled by surface roughness when viscosity is higher than water ! Apparently the ground water and soil guys know this. As do the Material scientists !