RESERVOIR QUALITY OF LOUISIANA MIOCENE SHELF SANDSTONES, GULF OF MEXICO: CLAYS ARE THE KEY

摘要

Miocene reservoirs in south-central Louisiana were deposited in a variety of shelf environments ranging from distributary channels, fluvial point bars, to upper/middle shoreface sequences as interpreted from logs and cores. These reservoirs are found today at >150C, increasing geologic risk due to porosity reduction. Two conventionally cored wells were assessed for reservoir quality variability and mineralogy using computer simulation of X-ray patterns from oriented clay mineral preparations, sandstone petrographic methods, basin modeling methods, and diagenesis modeling methods.