OBJECTIVE ORIENTED NMR LOGGING METHOD AND APPARATUS

摘要

The invention is an objective oriented NMR logging method and apparatus. Bas ed on an objective, a combination of multiple building blocks that form a comprehensive logging program achieves a defined set of logging objectives. An example of a building block is a trainlet sequence (413) with a short interv al between trainlets. Another example of a building block is a CPMG sequence (403) or a modified CPMG sequence having a refocusing angle between 90 and 1 80 degrees.