FLUORESCENT METAL ORGANIC FRAMEWORKS (MOFS) FOR DRILLING DEPTH CORRELATION AND WATERFRONT MAPPING

摘要

A composition that includes a fluorescent metal-organic framework (MOF) and a drilling fluid is provided. The MOF includes a porous, crystalline structure and a fluorescent source. A method includes introducing a MOF into a drilling fluid and circulating the drilling fluid through a well during a drilling operation that creates formation cuttings such that the fluorescent MOF interacts with the formation cuttings, creating tagged cuttings. The method further includes collecting returned cuttings from the circulating drilling fluid at a surface of the well, detecting the presence of the fluorescent MOF on the returned cuttings to identify the tagged cuttings, and correlating the tagged cuttings with a drill depth in the well at a time during the drilling operation.