Dictionary:Formation evaluation

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The analysis and interpretation of well-log data, drill-stem tests, cores, drill cuttings, etc., in terms of the nature of the formations and their fluid content. The objectives of formation evaluation are to ascertain if commercially productive hydrocarbons are present and, if so, the best means for their recovery. Other objectives are to derive lithology and other information on formation characteristics for use in further exploration. See Figure W-9. Compare formation test.