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Marvin Blan #1 Image Log Report
(as conducted by Ray Reid)
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Summary• Weatherford’s CMI™ imaging tool recorded sufficient quality
data to allow visualization of vugs and moderate correlation to whole and slabbed core
• Secondary porosity computations compromised by uncertainty in the array induction and the general conductive signature of the brecciated rock fabric
• Stress regime orientation (~E-W SHmax) and fracture trends were interpreted
• Correlating fractures with high perm test zone in the Upper Knox difficult due to brecciated rock fabric and rubblized whole core
• Higher fracture count intervals in the Rose Run sandstone indicate a moderate relationship to the boron log
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Vuggy zones in core correlate to vugs seen in image log
Image LogWireline GR (black)Core GR (green)
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Fracture in core as seen on image log
Image LogWireline GR (black)Core GR (green)
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Attempt to enhance porosity log using image log data
Porosity Tract ExplanationPHINDXP = Neutron-Density Cross-Plot PorosityPHINSXP = Neutron-Sonic Cross-Plot PorosityPORAVG1 = Image Log Enhanced Porosity 1PORAVG2 = Image Log Enhanced Porosity 2
Resistivity
Image Log Data
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Recommendations
• Acquire acoustic borehole images along with the higher resolution micro-resistivity images to differentiate vug / fracture signature from brecciated conductive rock fabric
• Continue acquiring whole core in high interest intervals for borehole image calibration as well as conventional core and geomechanical analysis