METAMORPHIC SAND /
In this case, the mineralogy was triggered by quantitative sample descriptions, which in turn were keyed to raw log response to minimize cavings and depth control issues. Porosity and water saturation were derived from conventional log analysis methods. The reservoir is naturally fractured and a fracture intensity curve was generated from anomalies on the open hole logs. This was compared to the fracture intensity from resistivity micro image log data.
sample description of mineral composition is shown in track five
(right-hand track). Interpreted lithology is in track four; computed
porosity in track three (middle track). The log analysis porosity
matches core reasonably well (center track) and open hole fracture
indicators (right edge of track one) correspond to resistivity
image log data (left edge of track two).
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