Environmental index quantifies reservoir characteristics

Mudlogging technology-2An easily calculated semiquantitative index, which expands on conventional sample-description procedures, may be used to indicate relative levels of porosity and permeability while drilling.In turn, this information can be used to supplement or even supplant costly and time-consuming drillstem or formation pressure-test data, further enhanced by the addition of invaluable geologic feedback.This second of a three-part series on mudlogging technologies focuses on poly-modal sample-description techniques, providing real-time clues to reservoir characteristics. The conclusion will describe theory, techniques, and equipment for determining gas content in coal seams.A new...

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