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Sensitive Clays
Formation Damage
Rock-log Calibration
Low-resistivity Pay
Resource Plays
Tight Gas
Fractures
Wettability
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Reservoir Rock Analysis
Optical & Scanning Electron Microscopy
Chlorite Clay
Gels in contact with Hydrochloric acid; causing formation damage.
Microporosity decreases resistivity on logs.
Slide Show
Enlargement of boxed area at left.
Rock sample from the University of Texas, Bureau of Economic Geology.