Formation Evaluation with Nuclear Magnetic Resonance - World Wide Applications

Undoubtedly the most significant advance in Formation Evaluation of the 1990' s has been the introduction of reliable, laboratory quality downhole Nuclear Magnetic Resonance (NMR) technology. The most advanced NMR logging system is based on the unique gradient field technology introduced by Numar'. The gradient field offers significant advantages over conventional homogeneous field tools and permits both rapid and flexible NMR data acquisition. When the Magnetic Resonance Imaging Log, MRIL", is run in combination with conventional porosity and induction tools, heretofore difficult formation evaluation problems are easily solved. The fundamentals of NMR logging and interpretation are illustrated with examples from many petroleum provinces around the world.