VPPS Byte 2: Critical Water Saturation, What is it and how it impacts NMR and Capillary Pressure mobile water

Critical Water Saturation One key petrophysical property that has been overlooked when interpreting whether mobile water is present in a reservoir is the critical water saturation (Swcr).  This saturation is an estimate of the minimum connate water saturation  (Sw) above which the relative permeability to water (Krw) allows water to flow in the reservoir. This […]

VPPS Byte 1: How can I integrate my NMR log data? Or Is it Water or Hydrocarbon?

Common Objectives Ok.  So now you have acquired an NMR log often regarded as a “specialty” service, and you are wondering how do I integrate this into my petrophysical evaluation. This is not your local service company representative selling his wares, but an experienced user of NMR log data.  Let’s start off with the basic […]