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Basic: Trace Elements

Trace elements log suites can be useful for helping to identify reservoir characteristics such as detrital source, cement chemical signatures, and zone markers. One of the main purposes of conducting the XRF analyses on core is to build a vertical stratigraphy chemical profile so that the same stratigraphic packages can be identified when drilling a horizontal well. Trace element chemistry is a great tool for locating which stratigraphic interval the well is located in when drilling through packages with similar mineralogy.  Figure A displays the trace element chemistry for an oil sands core from the McMurray Formation.

trace-e-1

Figure A.  Trace Element Chemistry from Core Analysis in the McMurray Formation.