Mudlogging method calculates coalbed gas content

MUDLOGGING-ConclusionCase studies show that gas-content calculations, as determined by a novel mudlogging technique, closely coincide with information derived through whole core desorption techniques.Thus, this approach can provide an alternative and near-instantaneous method for evaluating single or multiple coal seams without the costly and time-consuming need to pull whole cores and directly measure desorbed gas volumes.TheoryThe approach described in this article, the last of a three-part series on novel mudlogging technologies, has been used in the San Juan, Raton, San Wash, and Powder River basins to overcome problems associated with missed core points, poor core recovery, lengthy t...

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